Navigation Links
I'm forever imploding bubbles
Date:4/7/2009

The National Physical Laboratory (NPL) has developed the first sensor capable of measuring localized ultrasonic cavitation the implosion of bubbles in a liquid when a high frequency sound wave is applied. The sensor will help hospitals ensure that their instruments are properly disinfected before they are used on patients. The device recently won the annual Outstanding Ultrasonics Product award from the Ultrasonic Industry Association.

Cavitation is used throughout the NHS by doctors and dentists to clean and disinfect surgical instruments. A high frequency sound wave is passed through a disinfecting liquid to create bubbles that implode. The force of each implosion removes contaminate particles from surrounding materials. Cavitation is one of the most effective cleaning processes. There are more than 200 000 places in a teaspoon of tap water where a bubble can emerge and implode, and the process is self-stimulating because the implosion of one bubble creates new sites for further bubbles to emerge. Until now there has been no accurate method of identifying how much cavitation takes place at different locations in a cleaning system, and therefore no measureable way to ensure the cleaning process is effective. The new sensor also means that technicians can fine-tune and optimise equipment so that only the energy required is used, reducing costs and environmental impact.

Previously the only way to measure cavitation rates has been to lower a piece of aluminium foil into the liquid and count the number of 'dents' caused by bubble implosion. NPL's new sensor takes a different approach by monitoring the acoustic signals generated when the bubbles implode. It listens to the bubbles as they collapse and uses the sound to identify how much cavitation is taking place at a given location.

"To spark cavitation we use ultrasonics to 'shout' at a liquid. Our sensor then listens to the response and tells us how much cavitation is taking place as a result of using that particular stimulus," explains Mark Hodnett, a Senior Research Scientist at NPL. "Cavitation is a powerful process but until now users have had no way to measure exactly how loud to shout in order to get a useful amount of bubbles, nor been able to quantify how energetic those bubbles are. They've previously had to rely on trial and error. This is dangerous when you are dealing with cleanliness in medical environments, and a waste of energy. The NPL sensor provides a new tool for improving cleaning systems and aiding instrument hygiene."

Sonic Systems has purchased one of NPL's sensors and say that it fills an important gap in the market. "There is nothing else like the NPL sensor available to sonic equipment manufacturers. We use it as part of our product development process. It has enabled us to verify the cavitation fields inside some of our more complex systems. This has given us the confidence to confirm to customers that our equipment is truly optimised."


'/>"/>

Contact: Richard Moss
richard@proofcommunication.com
44-845-680-1863
National Physical Laboratory
Source:Eurekalert

Related medicine news :

1. Celebrities Pledge to Wear Pink, End Breast Cancer Forever With Susan G. Komen for the Cure
2. Forever young: Differentiation blocked in tumor stem cells
3. Susan G. Komen for the Cure(R) Encourages Nation to Go Passionately Pink by Donning Pink, Donating Funds to End Breast Cancer Forever
4. Susan G. Komen for the Cure(R) Celebrity Ambassadors to Convene in Nations Capital to Help Race for the Cure, End Breast Cancer Forever
5. The forever war on terror: Dilemmas and choices
6. Cancer cells spread by releasing bubbles, according to an MUHC study
7. VIDEO from Medialink and Philips: Microbubbles Developed to Administer Medications That Fight Cancer and Reduce Side Effects
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/12/2017)... ... October 12, 2017 , ... Information about ... intend to develop to enable prevention of a major side effect of chemotherapy ... especially in pediatric patients. For cisplatin, hearing loss is FDA listed on-label as ...
(Date:10/12/2017)... Malvern, PA (PRWEB) , ... October 12, 2017 , ... ... is the recipient of a 2017 Folio Magazine Eddie Digital Award for ‘Best ... New York City on October 11, 2017. , The annual award competition recognizes editorial ...
(Date:10/12/2017)... ... 12, 2017 , ... On Saturday, October 21, the Health & Wellness Center ... to raise money for the American Heart Association Heart Walk. Teams of up to ... together to keep their treadmills moving for 5 hours. Treadmills will start at 7:00 ...
(Date:10/12/2017)... ... ... Health Literacy Innovations (HLI), creator of the Health Literacy ... Patient Education Network (CPEN), an independent professional organization that shares best practices in ... , As CPEN’s strategic partner, HLI will help support CPEN members by sharing ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... wound care advancements to physician colleagues, skilled nursing facility medical directors and other ... Treacherous Waters of Wound Care." , "At many of these conferences we get ...
Breaking Medicine News(10 mins):
(Date:10/11/2017)... , Oct. 11, 2017  BioPharmX Corporation (NYSE ... team that developed an innovative way to use nonlinear ... the delivery of new drugs. ... Clinical Dermatology Conference will show how researchers from BioPharmX ... Harvard Medical School used a suite of imaging techniques ...
(Date:10/10/2017)...  NDS received FDA 510(k) clearance in May 2017 for its ... specifically designed for endoscopy environments. An innovative secondary monitor solution, ZeroWire ... to support the improvement of patient outcomes, procedural efficiency, and the ... ... ...
(Date:10/4/2017)... , Oct. 4, 2017  South Korean-based healthcare product ... training aide "cprCUBE" on Kickstarter. The device will educate ... cardiac arrests with better efficiency compared to the dated ... real-time feedback on efficacy of the compression for a ... has a goal to raise $5,000. ...
Breaking Medicine Technology: