US – Page 124 – TechConnect Briefs

Temperature and Strain Coefficient of Velocity for Langasite SAW Devices

Wilson W.C., Atkinson G.M., NASA Langley Research Center, US

Surface Acoustic Wave sensors on Langasite substrates are being investigated for aerospace applications by NASA’s Vehicle Systems Safety Technologies (VSST) project. Strain sensors are being developed using the Langasite. Characterization of the Langasite material properties [...]

Micromachined Ultrasound Integrated Circuit

Hajati A., Latev D., Fujifilm Dimatix Inc, US

we present the design and experimental acoustic test data for an ultrasound transducer technology based on a combination of micromachined dome-shaped piezoelectric resonators arranged in a flexible architecture. Our high performance niobium-doped lead zirconate titanate [...]

A Novel Integrated Optomechanical Transducer and Its Application in Atomic Force Microscopy

Zou J., Miao H., Michels T., Aksyuk V., National Institute of Standards and Technology, US

Cavity optomechanics studies the coupling of optical and mechanical degrees of freedom in an optical cavity. It has made great progress in recent years and enabled quantum-limited measurement of mechanical motion. One important application is [...]

Micro/Nano Patterned Integrated Electrochemical Sensors for Implantable Applications

Mujeeb-U-Rahman M., Adalian D., Sencan M., Scherer A., California Institute of Technology, US

Electrochemical sensors are very important candidates for many sensing and actuation applications. Micro/Nano scale techniques are very appealing in designing these sensors for completely integrated systems. Such systems can provide accurate and long-term measurements of [...]

Nanomaterials-Enabled Photonic and Chemiresistive Sensing of Chemicals and Biochemicals

Choi C-J, Benkstein K.D., Rogers P.H., Montgomery C.B., Semancik S., National Institute of Standards and Technology, US

Contact events occurring between target species and surface sites on sensing materials initiate front-end interactions and subsequent transduction processes that can yield viable signals for target detection. By offering high surface-to-volume ratios, and specialized properties, [...]

Differentiation of Complex Vapor Mixtures Using Versatile DNA-Carbon Nanotube Chemical Sensor Arrays

Kybert N.J., Lerner M.B., Yodh J.S., Preti G., Johnson A.T.C., University of Pennsylvania, US

Vapor sensors based on functionalized carbon nanotubes (NTs) have shown great promise, with high sensitivity conferred by the reduced dimensionality and exceptional electronic properties of the NT. Critical challenges in the development of NT-based sensor [...]

Electrical Response of DNA and Proteins at Nanoscale by Using Novel Nanoneedle Biosensor

Esfandyarpour R., Stanford University, US

Here we present a novel Nanoneedle biosensor used as an ultra-sensitive, label-free and localized device, which shows promise to overcome some of the current limitations of biosensors. A Nanoneedle biosensor is a real-time, label-free, direct [...]

Wireless Graphene-Based Quantum Capacitance Sensors for Continuous Glucose Monitoring

Olson E.J., Deen D.A., Ebrish M.A., Basu A., Kudva Y.C., Mukherjee P., Koester S.J., University of Minnesota, US

We describe a revolutionary concept for in vivo biosensing that utilizes the quantum capacitance effect in graphene to realize an ultra-small passive wireless sensor. The unique properties of graphene make it attractive for sensing applications. [...]

Nanostructured Biomimetic Pyruvate Dehydrogenase Complex (PDC) Sensors Selectively Detect Single Brain Cancer Cell and Have the Ability to Mimic the “ATP LID”

Chen E.T., Thornton J., Ngatchou C., Duh S-H, Kissinger P.T., Advanced Biomimetic Sensors, Inc., US

Diseases such as cancer, diabetes mellitus, and brain injury can be caused by lack of conformational change in the pyruvate dehydrogenase complex (PDC). The known “ATP Lid” for the function of PDC is comprised by [...]

ZnO-Based Inverters for Flexible Electronics

Gutierrez-Heredia G., Mejia I., Rivas-Aguilar M.E., Aguirre-Tostado F.S., Quevedo-Lopez M.A., The University of Texas at Dallas, US

We report the development of low power ZnO-based inverters. Inverters were evaluated as function of gate dielectric thicknesses and electrically characterized at several power supply voltages. The logic inverters gain increases one order of magnitude [...]