Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Sensors for the real world

One of the sensors that has been fabricated using a thin layer of carbon nanotubes (CNTs) for electroding, in order to enhance sensitivity. The sensing area is the square at the centre. Credit: Luis Garcia-Gancedo
One of the sensors that has been fabricated using a thin layer of carbon nanotubes (CNTs) for electroding, in order to enhance sensitivity. The sensing area is the square at the centre.

Credit: Luis Garcia-Gancedo

Abstract:
Over the last decade there has been an increased interest in developing resonators for gravitmetric sensing; however, the sensors' response to variations in temperature has prevented them from being used outside the laboratory. New sensors developed by researchers at the University of Cambridge negate the effects of temperature so that they may be used in industries including health care, telecommunications and environmental monitoring.

Sensors for the real world

Cambridge, MA | Posted on November 5th, 2012

Sensors built from high frequency bulk acoustic wave (BAW) resonators consist of a piezoelectric layer sandwiched between two electrodes, to which a variable frequency signal is applied. The resonator vibrates at a given frequency, and the properties of the resulting acoustic wave allow researchers to determine what is occurring in the environment.

The main application of these nanoscale sensors is to measure a mass load. By tracking changes in the acoustic wave, mass changes on the sensors can be detected. The resonators can be altered to detect a number of different things, from antigens/antibodies to environmental contaminants.
The major issue which has prevented the adoption of these resonators in commercial sensing applications has been their unwanted response to temperature. When the temperature changes, the acoustic wave changes along with it, so it is impossible to determine whether the change has been motivated by something the resonator is trying to detect or a change in temperature. For this reason, the use of these resonators has been limited to laboratories where environmental conditions can be tightly controlled.

Many researchers have attempted to compensate for the effects of temperature, but as these effects are non-linear, they can only be minimised, not eliminated completely. Now, researchers from the Department of Engineering have designed a thin film bulk acoustic wave resonator that allows simultaneous measurement of temperature and mass loading in a single device. The resonator has been designed so that it has two resonances which react differently to mass and temperature changes.
"This has two consequences," says Dr Luis Garcia-Gancedo, a member of Dr Andrew Flewitt's group in the Department of Engineering. "First, we are able to eliminate the effects of temperature completely regardless of its non-linearity. Secondly, we are able to measure mass and temperature with extremely high sensitivity at exactly the same location, which we haven't been able to do before."

With the assistance of Cambridge Enterprise, the team is looking at two primary applications for the resonators: biological systems and physical sensing. The resonators could be used for applications such as detecting viruses in a health care setting, or contaminants in drinking water. Other potential applications include air quality or pressure monitoring.
The resonator is able to detect masses to the order of 10-15 grams, which is approximately the size of one virus. The size of the resonator (typically a few micrometres square) means that they can easily be embedded in various devices.

"One of the problems with existing sensing technology is that if you're trying to measure two different physical properties, the sensors are often based on two different mechanisms," says Dr Garcia-Gancedo. "The integration of two different sensing mechanisms means that you often end up with a bulky item. But what we have developed uses exactly the same technology with exactly the same electronics, without any increase in size."

Cambridge Enterprise is currently seeking commercial partners for developing this technology.

####

About University of Cambridge
Cambridge Enterprise Limited is a wholly owned subsidiary of the University of Cambridge, responsible for the commercialisation of University intellectual property. Activities include management and licensing of intellectual property and patents, proof of concept funding and support for University staff and research groups wishing to provide expert advice or facilities to public and private sector organisations. Cambridge Enterprise provides access to angel and early stage capital through the Cambridge Enterprise Seed Funds and Cambridge Enterprise Venture Partners, and offers business planning, mentoring, and other related programmes. Over the past three years, income from licensing, consultancy and equity transactions exceeded £37 million, of which £30 million represents distributions to University departments and academics.

For more information, please click here

Contacts:
Sarah Collins
Cambridge Enterprise
University of Cambridge
Tel: +44 (0)1223 760335
Mob: +44 (0)7500 883612

Copyright © University of Cambridge

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Information storage with a nanoscale twist: Discovery of a novel rotational force inside magnetic vortices makes it easier to design ultrahigh capacity disk drives March 28th, 2017

ATTOPSEMI Technology Joins FDXcelerator Program to Deliver Advanced Non-Volatile Memory IP to GLOBALFOUNDRIES 22 FDX® Technology Platform: Leading-edge I-fuse™ brings higher reliability, smaller cell size and ease of programmability for consumer, automotive, and IoT applications March 27th, 2017

Leti and HORIBA Scientific to Host Webinar on Ultrafast Characterization Tool: Plasma Profiling Time-of-Flight Mass Spectrometer Tool Cuts Optimization Time In Layer Deposition and Fabrication of Wide Range of Applications March 27th, 2017

Laser activated gold pyramids could deliver drugs, DNA into cells without harm: Microstructures create temporary pores in cells March 27th, 2017

Nanotubes/Buckyballs/Fullerenes

Intertronics introduce new nanoparticle deagglomeration technology March 15th, 2017

Boron atoms stretch out, gain new powers: Rice University simulations demonstrate 1-D material's stiffness, electrical versatility January 26th, 2017

New stem cell technique shows promise for bone repair January 25th, 2017

Captured on video: DNA nanotubes build a bridge between 2 molecular posts: Research may lead to new lines of direct communication with cells January 9th, 2017

Sensors

“Cysteine Rose” Wins 2016 Thermo Fisher Scientific Electron Microscopy Image Contest: Thermo Fisher honors Andrea Jacassi of the Italian Institute of Technology for image of cysteine crystals using focused ion beam techniques March 27th, 2017

UC researchers use gold coating to control luminescence of nanowires: University of Cincinnati physicists manipulate nanowire semiconductors in pursuit of making electronics smaller, faster and cheaper March 17th, 2017

Optical fingerprint can reveal pollutants in the air: Researchers at Chalmers University of Technology have proposed a new, sophisticated method of detecting molecules with sensors based on ultra-thin nanomaterials March 15th, 2017

New optical nanosensor improves brain mapping accuracy, opens way for more applications: Potassium-sensitive fluorescence-imaging method shines light on chemical activity within the brain March 3rd, 2017

Discoveries

Information storage with a nanoscale twist: Discovery of a novel rotational force inside magnetic vortices makes it easier to design ultrahigh capacity disk drives March 28th, 2017

A big leap toward tinier lines: Self-assembly technique could lead to long-awaited, simple method for making smaller microchip patterns March 27th, 2017

Laser activated gold pyramids could deliver drugs, DNA into cells without harm: Microstructures create temporary pores in cells March 27th, 2017

Researchers make flexible glass for tiny medical devices: Glass can bend over and over again on a nanoscale March 27th, 2017

Announcements

Information storage with a nanoscale twist: Discovery of a novel rotational force inside magnetic vortices makes it easier to design ultrahigh capacity disk drives March 28th, 2017

ATTOPSEMI Technology Joins FDXcelerator Program to Deliver Advanced Non-Volatile Memory IP to GLOBALFOUNDRIES 22 FDX® Technology Platform: Leading-edge I-fuse™ brings higher reliability, smaller cell size and ease of programmability for consumer, automotive, and IoT applications March 27th, 2017

Leti and HORIBA Scientific to Host Webinar on Ultrafast Characterization Tool: Plasma Profiling Time-of-Flight Mass Spectrometer Tool Cuts Optimization Time In Layer Deposition and Fabrication of Wide Range of Applications March 27th, 2017

Laser activated gold pyramids could deliver drugs, DNA into cells without harm: Microstructures create temporary pores in cells March 27th, 2017

Environment

Rice U. refines filters for greener natural gas: New study defines best materials for carbon capture, methane selectivity March 23rd, 2017

Pulverizing e-waste is green, clean -- and cold: Rice, Indian Institute researchers use cryo-mill to turn circuit boards into separated powders March 21st, 2017

Nanogate Expands Sustainability Management: Nanogate publishes a statement of compliance with the German Sustainability Code for the first time March 15th, 2017

Optical fingerprint can reveal pollutants in the air: Researchers at Chalmers University of Technology have proposed a new, sophisticated method of detecting molecules with sensors based on ultra-thin nanomaterials March 15th, 2017

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project