{"id":8199,"date":"2020-01-09T16:45:13","date_gmt":"2020-01-09T15:45:13","guid":{"rendered":"http:\/\/www.sinaptec.fr\/ultrasons-de-puissance\/"},"modified":"2025-07-28T15:09:15","modified_gmt":"2025-07-28T13:09:15","slug":"high-power-ultrasound","status":"publish","type":"page","link":"https:\/\/www.sinaptec.fr\/en\/high-power-ultrasound\/","title":{"rendered":"High-Power Ultrasound"},"content":{"rendered":"<div class=\"wpb-content-wrapper\">[vc_row][vc_column][mk_padding_divider size=&#8221;20&#8243;][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text css=&#8221;.vc_custom_1753690017778{margin-bottom: 0px !important;}&#8221;]<span style=\"color: #000000;\">The <strong>large variety of applications of ultrasound<\/strong> means that producing an exhaustive list is not possible. Ultrasound should be considered a particular form of energy with multiple properties depending on the way in which it is used.<\/span><\/p>\n<p><span style=\"color: #000000;\">The energy transmitted by power ultrasound is able to alter the properties of the media that it comes into contact with.<\/span><\/p>\n<p><span style=\"color: #000000;\">The table below shows the main effects induced and some applications:<\/span>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text css=&#8221;.vc_custom_1699536895109{margin-bottom: 0px !important;}&#8221;]\n<h2 style=\"font-size: 20px;\">Interaction media, phenomenon and application examples:<\/h2>\n[\/vc_column_text][\/vc_column][\/vc_row][mk_page_section][vc_column width=&#8221;1\/4&#8243;][vc_column_text css=&#8221;.vc_custom_1753698634520{margin-bottom: 0px !important;}&#8221;]\n<h3><strong>Liquid :<\/strong><\/h3>\n<h4><span style=\"color: #00ccff;\"><a style=\"color: #00ccff;\" href=\"http:\/\/www.sinaptec.fr\/FR\/Fluide-et-cavitation-70.html\"><strong><em>Cavitation<\/em><\/strong><\/a><\/span><\/h4>\n<ul>\n<li><span style=\"color: #000000;\">Cleaning<\/span><\/li>\n<li><span style=\"color: #000000;\">Decontamination<\/span><\/li>\n<li><span style=\"color: #000000;\">Formulation and processing of liquids<\/span><\/li>\n<li><span style=\"color: #000000;\">Sonochemistry<\/span><\/li>\n<li><span style=\"color: #000000;\">Treating and reducing waste<\/span><\/li>\n<\/ul>\n<h4><span style=\"color: #00ccff;\"><a style=\"color: #00ccff;\" href=\"https:\/\/www.sinaptec.fr\/en\/atomization\/\"><strong><em>Atomization<\/em><\/strong><\/a><\/span><\/h4>\n<ul>\n<li><span style=\"color: #000000;\">Humidification, vaporization of liquids<\/span><\/li>\n<li><span style=\"color: #000000;\">Production of powders<\/span><\/li>\n<\/ul>\n[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/4&#8243;][vc_column_text css=&#8221;.vc_custom_1753698649999{margin-bottom: 0px !important;}&#8221;]\n<h3><strong>Solid:<\/strong><\/h3>\n<h4><span style=\"color: #00ccff;\"><a style=\"color: #00ccff;\" href=\"http:\/\/www.sinaptec.fr\/FR\/Echauffement-des-materiaux-72.html\"><strong><em>Heating<\/em><\/strong><\/a><\/span><\/h4>\n<ul>\n<li><span style=\"color: #000000;\">Thermoplastic welding,<\/span><\/li>\n<li><span style=\"color: #000000;\">Textile welding<\/span><\/li>\n<li><span style=\"color: #000000;\">Metal welding,<\/span><\/li>\n<\/ul>\n<h4><span style=\"color: #00ccff;\"><a style=\"color: #00ccff;\" href=\"http:\/\/www.sinaptec.fr\/FR\/Tranchage-par-vibration-73.html\"><strong><em>Vibration<\/em><\/strong><\/a><\/span><\/h4>\n<ul>\n<li><span style=\"color: #000000;\">Slicing, Cutting,<\/span><\/li>\n<li><span style=\"color: #000000;\">Processing,<\/span><\/li>\n<\/ul>\n[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/4&#8243;][vc_column_text css=&#8221;.vc_custom_1753698658678{margin-bottom: 0px !important;}&#8221;]\n<h3><strong>Powder:\u00a0<\/strong><\/h3>\n<h4><span style=\"color: #00ccff;\"><a style=\"color: #00ccff;\" href=\"http:\/\/www.sinaptec.fr\/FR\/Tranchage-par-vibration-73.html\"><strong><em>Vibration<\/em><\/strong><\/a><\/span><\/h4>\n<ul>\n<li><span style=\"color: #000000;\">Dedusting of mechanical parts,<\/span><\/li>\n<li><span style=\"color: #000000;\">Deagglomeration,<\/span><\/li>\n<li><span style=\"color: #000000;\">Sieving,<\/span><\/li>\n<li><span style=\"color: #000000;\">Dosing of powder,<\/span><\/li>\n<li><span style=\"color: #000000;\">Conveying powders,<\/span><\/li>\n<\/ul>\n[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/4&#8243;][vc_column_text css=&#8221;.vc_custom_1753698665505{margin-bottom: 0px !important;}&#8221;]\n<h3><strong>Gas :<\/strong><\/h3>\n<h4><span style=\"color: #00ccff;\"><strong><em><u>Acoustic pression<\/u><\/em><\/strong><\/span><\/h4>\n<ul>\n<li><span style=\"color: #000000;\">Dedusting,<\/span><\/li>\n<li><span style=\"color: #000000;\">Defoaming,<\/span><\/li>\n<li><span style=\"color: #000000;\">Agglomeration of partcles,<\/span><\/li>\n<\/ul>\n[\/vc_column_text][\/vc_column][\/mk_page_section][vc_row][vc_column][vc_column_text css=&#8221;.vc_custom_1753708157646{margin-bottom: 0px !important;}&#8221;]\n<h2><span style=\"color: #000000;\">Ultrasound in Fluids: Cavitation<\/span><\/h2>\n<hr \/>\n<p data-start=\"1177\" data-end=\"1433\"><span style=\"color: #000000;\">The action of <span style=\"color: #0000ff;\"><strong><a style=\"color: #0000ff;\" href=\"https:\/\/www.sinaptec.fr\/en\/general-principles-ultrasounds\/\">ultrasound<\/a><\/strong><\/span> in liquids relies on <strong>cavitation<\/strong>: the creation, growth, and collapse of bubbles formed when a liquid is subjected to a pressure wave. This results in a shockwave near the bubble and the formation of a thermochemical microreactor inside it.<\/span><\/p>\n<p data-start=\"1435\" data-end=\"1822\"><span style=\"color: #000000;\">To trigger acoustic cavitation, a power threshold must be reached\u2014around 0.5 W\/cm\u00b2 at 20 kHz for water at atmospheric pressure, and a few W\/cm\u00b2 for organic solvents. The required depression amplitude depends on various factors; the higher the viscosity (i.e., the internal cohesion of the liquid), the harder it is to achieve cavitation due to the difficulty in separating particles.<img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-11932 size-thumbnail\" src=\"https:\/\/www.sinaptec.fr\/wp-content\/uploads\/2024\/04\/ondes-ultrasons-150x150.jpg\" alt=\"ultrasonic cavitation\" width=\"150\" height=\"150\" srcset=\"https:\/\/www.sinaptec.fr\/wp-content\/uploads\/2024\/04\/ondes-ultrasons-150x150.jpg 150w, https:\/\/www.sinaptec.fr\/wp-content\/uploads\/2024\/04\/ondes-ultrasons-300x300.jpg 300w, https:\/\/www.sinaptec.fr\/wp-content\/uploads\/2024\/04\/ondes-ultrasons-1024x1024.jpg 1024w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/span><\/p>\n<p data-start=\"1824\" data-end=\"1906\"><span style=\"color: #000000;\">In liquids, acoustic cavitation is the primary source of power ultrasound effects.<\/span><\/p>\n<h3 data-start=\"1824\" data-end=\"1906\"><span style=\"color: #000000;\">\ud83d\udd39 <strong data-start=\"1920\" data-end=\"1943\">Ultrasonic Cleaning<\/strong><\/span><\/h3>\n<p data-start=\"1945\" data-end=\"2075\"><span style=\"color: #000000;\">When cavitation bubbles collapse near a solid surface, they create violent microjets (up to 100 m\/s) that blast the surface clean.<\/span><\/p>\n<p data-start=\"2077\" data-end=\"2180\"><span style=\"color: #000000;\">To achieve optimal cleaning while meeting application requirements, <strong>the following must be considered<\/strong>:<\/span><\/p>\n<ul>\n<li data-start=\"2181\" data-end=\"2241\">\n<p data-start=\"2183\" data-end=\"2241\"><span style=\"color: #000000;\"><strong data-start=\"2183\" data-end=\"2203\">Ultrasonic power<\/strong>: around 5 to 20 W per liter of bath<\/span><\/p>\n<\/li>\n<li data-start=\"2242\" data-end=\"2428\">\n<p data-start=\"2244\" data-end=\"2260\"><span style=\"color: #000000;\"><strong data-start=\"2244\" data-end=\"2257\">Frequency<\/strong>:<\/span><\/p>\n<ul data-start=\"2263\" data-end=\"2428\">\n<li data-start=\"2263\" data-end=\"2325\">\n<p data-start=\"2265\" data-end=\"2325\"><span style=\"color: #000000;\">25 kHz \u2013 strong cleaning for hard, heavily soiled surfaces<\/span><\/p>\n<\/li>\n<li data-start=\"2328\" data-end=\"2378\">\n<p data-start=\"2330\" data-end=\"2378\"><span style=\"color: #000000;\">40 kHz \u2013 gentle cleaning for delicate surfaces<\/span><\/p>\n<\/li>\n<li data-start=\"2381\" data-end=\"2428\">\n<p data-start=\"2383\" data-end=\"2428\"><span style=\"color: #000000;\">Up to 1\u20132 MHz \u2013 for cleaning silicon wafers<\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li data-start=\"2429\" data-end=\"2524\">\n<p data-start=\"2431\" data-end=\"2524\"><span style=\"color: #000000;\"><strong data-start=\"2431\" data-end=\"2444\">Detergent<\/strong>: neutral, acidic, or alkaline to dissolve contaminants without damaging parts<\/span><\/p>\n<\/li>\n<li data-start=\"2525\" data-end=\"2569\">\n<p data-start=\"2527\" data-end=\"2569\"><span style=\"color: #000000;\"><strong data-start=\"2527\" data-end=\"2547\">Bath temperature<\/strong>: generally 40\u201360 \u00b0C<\/span><\/p>\n<\/li>\n<li data-start=\"2570\" data-end=\"2650\">\n<p data-start=\"2572\" data-end=\"2650\"><span style=\"color: #000000;\"><strong data-start=\"2572\" data-end=\"2589\">Cleaning time<\/strong>: a few seconds for degreasing to several hours for stripping<\/span><\/p>\n<\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">The <strong>advantages<\/strong> of ultrasonic cleaning are:<\/span><\/p>\n<ul>\n<li data-start=\"2670\" data-end=\"2721\">\n<p data-start=\"2672\" data-end=\"2721\"><span style=\"color: #000000;\"><strong data-start=\"2672\" data-end=\"2687\">Eco-friendly and cost-effective<\/strong>: both ecological and economical<\/span><\/p>\n<\/li>\n<li data-start=\"2722\" data-end=\"2783\">\n<p data-start=\"2724\" data-end=\"2783\"><span style=\"color: #000000;\">An alternative to solvents using biodegradable detergents<\/span><\/p>\n<\/li>\n<li data-start=\"2784\" data-end=\"2809\">\n<p data-start=\"2786\" data-end=\"2809\"><span style=\"color: #000000;\">Reduced cleaning time<\/span><\/p>\n<\/li>\n<li data-start=\"2810\" data-end=\"2861\">\n<p data-start=\"2812\" data-end=\"2861\"><span style=\"color: #000000;\">High-performance, effortless precision cleaning<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1824\" data-end=\"1906\"><span style=\"color: #000000;\">\ud83d\udd39<strong data-start=\"2875\" data-end=\"2922\">Ultrasonic Liquid Treatment and Formulation<\/strong><\/span><\/h3>\n<p data-start=\"2924\" data-end=\"3010\"><span style=\"color: #000000;\">At high power levels (50 W to 1 kW\/L), cavitation\u2019s mechanical effects are used for:<\/span><\/p>\n<ul data-start=\"3011\" data-end=\"3299\">\n<li data-start=\"3011\" data-end=\"3024\">\n<p data-start=\"3013\" data-end=\"3024\"><span style=\"color: #000000;\">Degassing<\/span><\/p>\n<\/li>\n<li data-start=\"3025\" data-end=\"3058\">\n<p data-start=\"3027\" data-end=\"3058\"><span style=\"color: #000000;\">Catalyzing chemical reactions<img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-8348 size-medium\" src=\"https:\/\/www.sinaptec.fr\/wp-content\/uploads\/2020\/02\/chimiluminescence-300x300.jpg\" alt=\"ultrasound chimiluminescence |\u00a0SinapTec\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.sinaptec.fr\/wp-content\/uploads\/2020\/02\/chimiluminescence-300x300.jpg 300w, https:\/\/www.sinaptec.fr\/wp-content\/uploads\/2020\/02\/chimiluminescence.jpg 150w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/span><\/p>\n<\/li>\n<li data-start=\"3059\" data-end=\"3077\">\n<p data-start=\"3061\" data-end=\"3077\"><span style=\"color: #000000;\">Homogenization<\/span><\/p>\n<\/li>\n<li data-start=\"3078\" data-end=\"3096\">\n<p data-start=\"3080\" data-end=\"3096\"><span style=\"color: #000000;\">Emulsification<\/span><\/p>\n<\/li>\n<li data-start=\"3097\" data-end=\"3160\">\n<p data-start=\"3099\" data-end=\"3160\"><span style=\"color: #000000;\">Intensive mixing (even for viscous products up to 400 Pas<\/span><\/p>\n<\/li>\n<li data-start=\"3161\" data-end=\"3186\">\n<p data-start=\"3163\" data-end=\"3186\"><span style=\"color: #000000;\">Enzyme\/DNA extraction<\/span><\/p>\n<\/li>\n<li data-start=\"3187\" data-end=\"3201\">\n<p data-start=\"3189\" data-end=\"3201\"><span style=\"color: #000000;\">Cell lysis<\/span><\/p>\n<\/li>\n<li data-start=\"3202\" data-end=\"3227\">\n<p data-start=\"3204\" data-end=\"3227\"><span style=\"color: #000000;\">Bacterial destruction<\/span><\/p>\n<\/li>\n<li data-start=\"3228\" data-end=\"3243\">\n<p data-start=\"3230\" data-end=\"3243\"><span style=\"color: #000000;\">Formulation<\/span><\/p>\n<\/li>\n<li data-start=\"3244\" data-end=\"3264\">\n<p data-start=\"3246\" data-end=\"3264\"><span style=\"color: #000000;\">Electrochemistry<\/span><\/p>\n<\/li>\n<li data-start=\"3265\" data-end=\"3284\">\n<p data-start=\"3267\" data-end=\"3284\"><span style=\"color: #000000;\">Deagglomeration<\/span><\/p>\n<\/li>\n<li data-start=\"3285\" data-end=\"3299\">\n<p data-start=\"3287\" data-end=\"3299\"><span style=\"color: #000000;\">Extraction<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"3306\" data-end=\"3330\"><span style=\"color: #000000;\">\ud83d\udd39 <strong data-start=\"3313\" data-end=\"3330\">Sonochemistry<\/strong><\/span><\/h3>\n<p data-start=\"3332\" data-end=\"3384\"><span style=\"color: #000000;\">Cavitation also drives chemical reactions such as:<\/span><\/p>\n<ul data-start=\"3385\" data-end=\"3617\">\n<li data-start=\"3385\" data-end=\"3420\">\n<p data-start=\"3387\" data-end=\"3420\"><span style=\"color: #000000;\">Catalysis and radical formation<\/span><\/p>\n<\/li>\n<li data-start=\"3421\" data-end=\"3441\">\n<p data-start=\"3423\" data-end=\"3441\"><span style=\"color: #000000;\">Electrochemistry<\/span><\/p>\n<\/li>\n<li data-start=\"3442\" data-end=\"3528\">\n<p data-start=\"3444\" data-end=\"3528\"><span style=\"color: #000000;\">Crystallization of alkaloids, glycosides, fragrances, fruit juices, essential oils<\/span><\/p>\n<\/li>\n<li data-start=\"3529\" data-end=\"3585\">\n<p data-start=\"3531\" data-end=\"3585\"><span style=\"color: #000000;\">Operating under less severe temperature and pressure<\/span><\/p>\n<\/li>\n<li data-start=\"3586\" data-end=\"3617\">\n<p data-start=\"3588\" data-end=\"3617\"><span style=\"color: #000000;\">Improving yields and purity<\/span><\/p>\n<\/li>\n<\/ul>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text css=&#8221;.vc_custom_1753698294023{margin-bottom: 0px !important;}&#8221;]\n<h2><span style=\"color: #000000;\">Ultrasonic Aerosol Generators<\/span><\/h2>\n<hr \/>\n<p><span style=\"color: #000000;\">Ultrasonic aerosol generators are used, among other things, for:<\/span><\/p>\n<ul>\n<li data-start=\"3675\" data-end=\"3713\">\n<p data-start=\"3677\" data-end=\"3713\"><span style=\"color: #000000;\">Efficiency testing and ventilation<img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-8351 size-medium\" src=\"https:\/\/www.sinaptec.fr\/wp-content\/uploads\/2020\/02\/embase_2-300x300.jpg\" alt=\"ultrasound base | SinapTec\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.sinaptec.fr\/wp-content\/uploads\/2020\/02\/embase_2-300x300.jpg 300w, https:\/\/www.sinaptec.fr\/wp-content\/uploads\/2020\/02\/embase_2-150x150.jpg 150w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/span><\/p>\n<\/li>\n<li data-start=\"3714\" data-end=\"3739\">\n<p data-start=\"3716\" data-end=\"3739\"><span style=\"color: #000000;\">Thin-layer deposition<\/span><\/p>\n<\/li>\n<li data-start=\"3740\" data-end=\"3771\">\n<p data-start=\"3742\" data-end=\"3771\"><span style=\"color: #000000;\">Air contaminant measurement<\/span><\/p>\n<\/li>\n<li data-start=\"3772\" data-end=\"3796\">\n<p data-start=\"3774\" data-end=\"3796\"><span style=\"color: #000000;\">Environment scenting<\/span><\/p>\n<\/li>\n<li data-start=\"3797\" data-end=\"3815\">\n<p data-start=\"3799\" data-end=\"3815\"><span style=\"color: #000000;\">Humidification<\/span><\/p>\n<\/li>\n<li data-start=\"3816\" data-end=\"3856\">\n<p data-start=\"3818\" data-end=\"3856\"><span style=\"color: #000000;\">Odor treatment and room disinfection<\/span><\/p>\n<\/li>\n<li data-start=\"3857\" data-end=\"3899\">\n<p data-start=\"3859\" data-end=\"3899\"><span style=\"color: #000000;\">Filter characterization and monitoring<\/span><\/p>\n<\/li>\n<li data-start=\"3900\" data-end=\"3922\">\n<p data-start=\"3902\" data-end=\"3922\"><span style=\"color: #000000;\">Medicinal aerosols<\/span><\/p>\n<\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">The <strong>advantages<\/strong> of this technology are:<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\">no noise pollution<\/span><\/li>\n<li><span style=\"color: #000000;\">precise droplet size controlled by the ultrasonic frequency<\/span><\/li>\n<li><span style=\"color: #000000;\">directional flow<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">The production of aerosols is based on the behavior of a thin layer of liquid in contact with a vibrating surface. When the vibrational amplitude exceeds a certain threshold, droplets are ejected from the liquid\u2019s surface. The diameter of these droplets is determined by the ultrasonic frequency and the properties of the fluid, such as its density, viscosity, and surface tension.<\/span><\/p>\n<div class=\"flex basis-auto flex-col -mb-(--composer-overlap-px) [--composer-overlap-px:55px] grow overflow-hidden\">\n<div class=\"relative h-full\">\n<div class=\"flex h-full flex-col overflow-y-auto [scrollbar-gutter:stable_both-edges] @[84rem]\/thread:pt-(--header-height)\">\n<div class=\"@thread-xl\/thread:pt-header-height flex flex-col text-sm pb-25\">\n<article class=\"text-token-text-primary w-full focus:outline-none scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" tabindex=\"-1\" data-testid=\"conversation-turn-32\" data-scroll-anchor=\"true\" data-turn=\"assistant\">\n<div class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:--spacing(4)] @[37rem]:[--thread-content-margin:--spacing(6)] @[72rem]:[--thread-content-margin:--spacing(16)] px-(--thread-content-margin)\">\n<div class=\"[--thread-content-max-width:32rem] @[34rem]:[--thread-content-max-width:40rem] @[64rem]:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" tabindex=\"-1\">\n<div class=\"flex max-w-full flex-col grow\">\n<div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+&amp;]:mt-5\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"e414fc1f-7a4d-4d90-8318-7ceeb82a8abb\" data-message-model-slug=\"gpt-4o\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[3px]\">\n<div class=\"markdown prose dark:prose-invert w-full break-words dark\">\n<p data-start=\"79\" data-end=\"164\"><span style=\"color: #000000;\">The change in <strong>droplet size<\/strong> as a function of frequency is illustrated below for water:<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\">At 20 kHz, the average droplet diameter is about 80 \u00b5m. At 2 MHz, the diameter is around 3 \u00b5m.<\/span><\/li>\n<li><span style=\"color: #000000;\">In the frequency range between 20 kHz and 80 kHz, the liquid is atomized as soon as it comes into contact with the vibrating surface.<\/span><\/li>\n<li><span style=\"color: #000000;\">In the high-frequency range (&gt;250 kHz), the ultrasonic transducer is placed at the bottom of a liquid volume. The acoustic field generates a fountain at the surface, from which the aerosol forms.<\/span><\/li>\n<\/ul>\n<p data-start=\"596\" data-end=\"688\"><span style=\"color: #000000;\">Compared to pneumatic nebulization, ultrasonic aerosol generation offers several advantages:<\/span><\/p>\n<ul data-start=\"690\" data-end=\"1225\" data-is-last-node=\"\" data-is-only-node=\"\">\n<li data-start=\"690\" data-end=\"861\">\n<p data-start=\"692\" data-end=\"861\"><span style=\"color: #000000;\">The droplet size is very precisely defined. It depends on the resonance frequency of the piezoelectric system and the properties of the fluid solution to be nebulized.<\/span><\/p>\n<\/li>\n<li data-start=\"862\" data-end=\"954\">\n<p data-start=\"864\" data-end=\"954\"><span style=\"color: #000000;\">The droplet size distribution is narrow, with a standard deviation of approximately 1.4.<\/span><\/p>\n<\/li>\n<li data-start=\"955\" data-end=\"1225\" data-is-last-node=\"\">\n<p data-start=\"957\" data-end=\"1225\" data-is-last-node=\"\"><span style=\"color: #000000;\">The aerosol flow rate can be easily adjusted over a wide range by modifying the excitation of the power signal, without altering the particle size distribution. Solid particles with a defined grain size can also be obtained by drying the aerosol from a given solution.<\/span><\/p>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"mx-[var(--mini-thread-content-inset)]\">\n<div class=\"flex min-h-[46px] justify-start\"><span style=\"color: #000000;\">\u00a0<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/article>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text css=&#8221;.vc_custom_1753698543777{margin-bottom: 0px !important;}&#8221;]\n<h2 data-start=\"58\" data-end=\"101\"><span style=\"color: #000000;\"><strong data-start=\"62\" data-end=\"101\">Assembly of Thermoplastic Materials<\/strong><\/span><\/h2>\n<hr \/>\n<p data-start=\"103\" data-end=\"217\"><span style=\"color: #000000;\">Ultrasonic welding is one of the most widely used processes in the <strong>thermoplastic parts<\/strong> industry. It is applied to:<\/span><\/p>\n<ul data-start=\"219\" data-end=\"521\">\n<li data-start=\"219\" data-end=\"372\">\n<p data-start=\"221\" data-end=\"372\"><span style=\"color: #000000;\">Plastics (polyester, polyamide, polypropylene, acrylic, or blends containing at least 50% of these fibers with natural fibers like cotton or viscose)<\/span><\/p>\n<\/li>\n<li data-start=\"373\" data-end=\"434\">\n<p data-start=\"375\" data-end=\"434\"><span style=\"color: #000000;\">Textiles made from synthetic fibers (woven and non-woven)<\/span><\/p>\n<\/li>\n<li data-start=\"435\" data-end=\"521\">\n<p data-start=\"437\" data-end=\"521\"><span style=\"color: #000000;\">Textiles made from special fiber materials (carbon fiber, glass fiber, aramid fiber)<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"528\" data-end=\"545\"><span style=\"color: #000000;\"><strong data-start=\"532\" data-end=\"545\">Principle<\/strong><\/span><\/h3>\n<p data-start=\"547\" data-end=\"712\"><span style=\"color: #000000;\">The key features of ultrasonic welding are the cleanliness of the result and the speed of the process. The welding time can be less than one second for spot welding.<\/span><\/p>\n<p data-start=\"714\" data-end=\"1277\"><span style=\"color: #000000;\">The principle of ultrasonic assembly involves combining applied pressure with ultrasonic vibration. Depending on the material\u2019s characteristics, the ultrasonic energy generates intense heat within the material, causing it to melt at the interface. No bonding agent is required. The pressure force can be applied manually or using a cylinder. The vibration amplitude required from the sonotrode depends on the material and the geometry of the sonotrode. Semi-crystalline materials generally require higher amplitudes (25\u201350 \u03bcm) than amorphous materials (10\u201330 \u03bcm).<\/span><\/p>\n<p data-start=\"1279\" data-end=\"1382\"><span style=\"color: #000000;\">The required amplitude is usually confirmed through successive trials and fine-tuning of the equipment.<\/span><\/p>\n<h3 data-start=\"1389\" data-end=\"1424\"><span style=\"color: #000000;\"><strong data-start=\"1393\" data-end=\"1424\">Different Types of Assembly<\/strong><\/span><\/h3>\n<p data-start=\"1426\" data-end=\"1504\"><span style=\"color: #000000;\">The choice of sonotrode and anvil profiles allows for a wide range of effects.<\/span><\/p>\n<p data-start=\"1508\" data-end=\"1777\"><span style=\"color: #000000;\">Using a flat anvil results in a <strong>welding<\/strong> action. It provides enough cutting energy to slice without excessive force, avoiding delamination in materials such as carbon fiber. This type of welding is suitable for materials with a thickness of just a few millimeters.<\/span><\/p>\n<p data-start=\"1780\" data-end=\"1859\"><span style=\"color: #000000;\">With a shallow-angle anvil, the system performs <strong>cutting<\/strong> or <strong>punching<\/strong> only.<\/span><\/p>\n<p data-start=\"1862\" data-end=\"1966\"><span style=\"color: #000000;\">If the anvil angle is sharper, it enables <strong data-start=\"1904\" data-end=\"1919\">cut-sealing<\/strong>, which prevents fraying along textile edges.<\/span><\/p>\n<p data-start=\"1968\" data-end=\"2288\"><span style=\"color: #000000;\">Ultrasonic assembly is also used for <strong data-start=\"2005\" data-end=\"2027\">continuous welding<\/strong> using <strong data-start=\"2034\" data-end=\"2061\">rotary ultrasonic tools<\/strong>, generally for thin materials. In this case, the welding speed can vary from a few meters to over 200 meters per minute. The ultrasonic system\u2019s power is adjusted according to the material\u2019s feed speed, density, and thickness.<\/span><\/p>\n<h3 data-start=\"2295\" data-end=\"2340\"><span style=\"color: #000000;\"><strong data-start=\"2299\" data-end=\"2340\">Advantages of This Welding Technology<\/strong><\/span><\/h3>\n<ul data-start=\"2342\" data-end=\"2498\">\n<li data-start=\"2342\" data-end=\"2399\">\n<p data-start=\"2344\" data-end=\"2399\"><span style=\"color: #000000;\">Clean, precise welds and cuts \u2014 no burning or fraying<\/span><\/p>\n<\/li>\n<li data-start=\"2400\" data-end=\"2422\">\n<p data-start=\"2402\" data-end=\"2422\"><span style=\"color: #000000;\">Effortless cutting<\/span><\/p>\n<\/li>\n<li data-start=\"2423\" data-end=\"2479\">\n<p data-start=\"2425\" data-end=\"2479\"><span style=\"color: #000000;\">Possibility of marking using specially shaped anvils<\/span><\/p>\n<\/li>\n<li data-start=\"2480\" data-end=\"2498\">\n<p data-start=\"2482\" data-end=\"2498\"><span style=\"color: #000000;\">Fast execution<\/span><\/p>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-16353 size-full\" src=\"https:\/\/www.sinaptec.fr\/wp-content\/uploads\/2025\/07\/welding-samples.jpg\" alt=\"\" width=\"548\" height=\"159\" srcset=\"https:\/\/www.sinaptec.fr\/wp-content\/uploads\/2025\/07\/welding-samples.jpg 548w, https:\/\/www.sinaptec.fr\/wp-content\/uploads\/2025\/07\/welding-samples-300x87.jpg 300w\" sizes=\"auto, (max-width: 548px) 100vw, 548px\" \/>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text css=&#8221;.vc_custom_1753697257572{margin-bottom: 0px !important;}&#8221;]\n<h2 data-start=\"85\" data-end=\"121\"><span style=\"color: #000000;\"><strong data-start=\"89\" data-end=\"121\">Clean and Effortless Cutting<\/strong><\/span><\/h2>\n<hr \/>\n<p data-start=\"123\" data-end=\"406\"><span style=\"color: #000000;\">Ultrasonic cutting is now well established in the food industry. This technique offers numerous advantages that make it competitive compared to other methods, such as water jet cutting, which can leave slight moisture on products and involves high installation and maintenance costs.<\/span><\/p>\n<p data-start=\"408\" data-end=\"818\"><span style=\"color: #000000;\">The ultrasonic cutting process involves vibrating a sharpened blade. These vibrations, typically at 20 kHz with an amplitude between 30 and 100 microns, make cutting easier because the blade penetrates the product without force or compression. Additionally, the blade is continuously self-cleaning, which simplifies tool maintenance and allows for the cutting of sticky products. The process produces no waste.<\/span><\/p>\n<h3 data-start=\"825\" data-end=\"865\"><span style=\"color: #000000;\"><strong data-start=\"829\" data-end=\"865\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-16356 size-full\" src=\"https:\/\/www.sinaptec.fr\/wp-content\/uploads\/2025\/07\/ultrasonic-cheese-cutting.jpg\" alt=\"\" width=\"250\" height=\"188\" \/><\/strong><\/span><\/h3>\n<h3 data-start=\"825\" data-end=\"865\"><span style=\"color: #000000;\"><strong data-start=\"829\" data-end=\"865\">Advantages of Ultrasonic Cutting<\/strong><\/span><\/h3>\n<ul data-start=\"867\" data-end=\"1236\">\n<li data-start=\"867\" data-end=\"964\">\n<p data-start=\"869\" data-end=\"964\"><span style=\"color: #000000;\">Cutting without tearing material, resulting in better finish quality and reduced product loss<\/span><\/p>\n<\/li>\n<li data-start=\"965\" data-end=\"1032\">\n<p data-start=\"967\" data-end=\"1032\"><span style=\"color: #000000;\">Reduced cutting force, improved efficiency, and less blade wear<\/span><\/p>\n<\/li>\n<li data-start=\"1033\" data-end=\"1130\">\n<p data-start=\"1035\" data-end=\"1130\"><span style=\"color: #000000;\">Suitable for all types of food products\u2014sheets, pieces, strips, rolls, rounds, blocks, loaves<\/span><\/p>\n<\/li>\n<li data-start=\"1131\" data-end=\"1170\">\n<p data-start=\"1133\" data-end=\"1170\"><span style=\"color: #000000;\">No sticking or fouling of the blade<\/span><\/p>\n<\/li>\n<li data-start=\"1171\" data-end=\"1193\">\n<p data-start=\"1173\" data-end=\"1193\"><span style=\"color: #000000;\">Low operating cost<\/span><\/p>\n<\/li>\n<li data-start=\"1194\" data-end=\"1236\">\n<p data-start=\"1196\" data-end=\"1236\"><span style=\"color: #000000;\">Easy maintenance, low maintenance cost<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1243\" data-end=\"1277\"><span style=\"color: #000000;\"><strong data-start=\"1247\" data-end=\"1277\">Two Common Cutting Methods<\/strong><\/span><\/h3>\n<p data-start=\"1279\" data-end=\"1544\"><span style=\"color: #000000;\"><strong data-start=\"1279\" data-end=\"1325\">Guillotine Cutting (or Mechanical Chopper)<\/strong><\/span><br data-start=\"1325\" data-end=\"1328\" \/><span style=\"color: #000000;\">A sonotrode blade with a triangular cross-section produces ultrasonic vibration at its tip. This blade is mechanically driven into the product. The system allows for continuous slicing of strips in a production line.<\/span><\/p>\n<p data-start=\"1546\" data-end=\"1833\"><span style=\"color: #000000;\"><strong data-start=\"1546\" data-end=\"1564\">Rotary Cutting<\/strong> <em data-start=\"1565\" data-end=\"1584\">(SinapTec Patent)<\/em><\/span><br data-start=\"1584\" data-end=\"1587\" \/><span style=\"color: #000000;\">This technique uses a driven circular blade. The cutting system operates with a standard ultrasonic generator, and an appropriate coupling mechanism at the center of the disk induces vibration in both the surface of the disk and its cutting edge.<\/span><\/p>\n<h3 data-start=\"1840\" data-end=\"1876\"><span style=\"color: #000000;\"><strong data-start=\"1844\" data-end=\"1876\">Advantages of Rotary Cutting<\/strong><\/span><\/h3>\n<ul data-start=\"1878\" data-end=\"2497\">\n<li data-start=\"1878\" data-end=\"2011\">\n<p data-start=\"1880\" data-end=\"2011\"><span style=\"color: #000000;\"><strong>Greater cutting thickness <\/strong>enabled by the use of circular blades with diameters up to 300 mm and blade thicknesses around 2 mm<\/span><\/p>\n<\/li>\n<li data-start=\"2012\" data-end=\"2107\">\n<p data-start=\"2014\" data-end=\"2107\"><span style=\"color: #000000;\"><strong data-start=\"2014\" data-end=\"2036\">High cutting speed<\/strong>, reaching several meters per minute across a wide range of materials<\/span><\/p>\n<\/li>\n<li data-start=\"2108\" data-end=\"2231\">\n<p data-start=\"2110\" data-end=\"2231\"><span style=\"color: #000000;\"><strong data-start=\"2110\" data-end=\"2139\">Unique vibration behavior<\/strong> of the blade allows for an exceptionally fine cutting edge compared to guillotine systems<\/span><\/p>\n<\/li>\n<li data-start=\"2232\" data-end=\"2358\">\n<p data-start=\"2234\" data-end=\"2358\"><span style=\"color: #000000;\"><strong data-start=\"2234\" data-end=\"2259\">Easier implementation<\/strong> from a mechanical point of view: only rotational drive is needed to achieve high-quality cutting<\/span><\/p>\n<\/li>\n<li data-start=\"2359\" data-end=\"2497\">\n<p data-start=\"2361\" data-end=\"2497\"><span style=\"color: #000000;\">Additionally, it has been observed that <strong data-start=\"2401\" data-end=\"2457\">precise tuning of the rotation speed is not critical<\/strong> in relation to the product\u2019s feed rate.<\/span><\/p>\n<\/li>\n<\/ul>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text css=&#8221;.vc_custom_1753703413073{margin-bottom: 0px !important;}&#8221;]\n<h2 data-start=\"82\" data-end=\"108\"><span style=\"color: #000000;\"><strong data-start=\"86\" data-end=\"108\">Ultrasonic Sieving<\/strong><\/span><\/h2>\n<hr \/>\n<p data-start=\"110\" data-end=\"209\"><span style=\"color: #000000;\">Ultrasonic vibration helps <strong>reduce the friction coefficients<\/strong> between parts and improves powder flow.<\/span><\/p>\n<p data-start=\"211\" data-end=\"270\"><span style=\"color: #000000;\">Ultrasonic sieving is particularly effective for improving:<\/span><\/p>\n<ul data-start=\"272\" data-end=\"406\" data-is-last-node=\"\" data-is-only-node=\"\">\n<li data-start=\"272\" data-end=\"294\">\n<p data-start=\"274\" data-end=\"294\"><span style=\"color: #000000;\">Sieving throughput<\/span><\/p>\n<\/li>\n<li data-start=\"295\" data-end=\"328\">\n<p data-start=\"297\" data-end=\"328\"><span style=\"color: #000000;\">The breakdown of agglomerates<\/span><\/p>\n<\/li>\n<li data-start=\"329\" data-end=\"367\">\n<p data-start=\"331\" data-end=\"367\"><span style=\"color: #000000;\">The proportion of oversize product<\/span><\/p>\n<\/li>\n<li data-start=\"368\" data-end=\"406\" data-is-last-node=\"\">\n<p data-start=\"370\" data-end=\"406\" data-is-last-node=\"\"><span style=\"color: #000000;\">Continuous self-cleaning of the mesh<\/span><\/p>\n<\/li>\n<\/ul>\n<h2 data-start=\"86\" data-end=\"112\"><span style=\"color: #000000;\"><strong data-start=\"90\" data-end=\"112\">Ultrasonic Blowing<\/strong><\/span><\/h2>\n<hr \/>\n<p data-start=\"114\" data-end=\"427\"><span style=\"color: #000000;\">Ultrasonic technology generates an <strong data-start=\"149\" data-end=\"172\">acoustic air stream<\/strong> in front of the probe without any actual gas displacement. The focused acoustic waves produced by the probe create a pressure field a few centimeters ahead of it. This field is strong enough to move particles suspended in the air or resting on a surface.<\/span><\/p>\n<p data-start=\"429\" data-end=\"698\"><span style=\"color: #000000;\">What makes this process unique is that the acoustic air stream<strong data-start=\"472\" data-end=\"510\"> is contactless<\/strong>. The propagation of ultrasonic waves in gases is limited due to the high absorption of the medium: the transmission of an ultrasonic wave from a solid medium into a gas is less than 0.1%.<\/span><\/p>\n<p data-start=\"700\" data-end=\"799\"><span style=\"color: #000000;\">Despite these limitations, producing high-intensity ultrasound in gas enables several applications:<\/span><\/p>\n<ul data-start=\"801\" data-end=\"1523\">\n<li data-start=\"801\" data-end=\"920\">\n<p data-start=\"803\" data-end=\"920\"><span style=\"color: #000000;\"><strong data-start=\"803\" data-end=\"825\">Droplet levitation<\/strong>, achieved by generating a standing wave field between an ultrasonic emitter and a reflector.<\/span><\/p>\n<\/li>\n<li data-start=\"921\" data-end=\"1030\">\n<p data-start=\"923\" data-end=\"1030\"><span style=\"color: #000000;\"><strong data-start=\"923\" data-end=\"939\">Foam removal<\/strong>, successfully implemented on production lines and even in large volumes (such as tanks).<\/span><\/p>\n<\/li>\n<li data-start=\"1031\" data-end=\"1222\">\n<p data-start=\"1033\" data-end=\"1222\"><span style=\"color: #000000;\"><strong data-start=\"1033\" data-end=\"1061\">Ultrasonic agglomeration<\/strong>, which promotes the growth of fine particles (smaller than 2 microns) suspended in air. Larger particles are then easier to filter using conventional methods.<\/span><\/p>\n<\/li>\n<li data-start=\"1223\" data-end=\"1523\">\n<p data-start=\"1225\" data-end=\"1523\"><span style=\"color: #000000;\">Contactless ultrasonic blowing is used for filter cleaning, dust removal, dry decontamination, and defoaming. This technique is especially valuable in <strong>confined environments<\/strong> such as cleanrooms, the food industry, or the nuclear sector, where the use of compressed air is not possible.<\/span><\/p>\n<\/li>\n<\/ul>\n[\/vc_column_text][\/vc_column][\/vc_row]\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column][mk_padding_divider size=&#8221;20&#8243;][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text css=&#8221;.vc_custom_1753690017778{margin-bottom: 0px !important;}&#8221;]The large variety of applications of ultrasound means that producing an exhaustive list is not possible. Ultrasound should be considered a particular form of energy with multiple properties depending on the way in which it is used. The energy transmitted by power ultrasound is able to alter the properties of the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-8199","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Power ultrasound and induced phenomena |\u00a0SinapTec<\/title>\n<meta name=\"description\" content=\"Discover the phenomena induced by power ultrasound such as cavitation, heating of materials, vibration, spraying ...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sinaptec.fr\/en\/high-power-ultrasound\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta 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