sensor – Page 3 – TechConnect Briefs

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. [...]

Vertically Aligned Patterned Peptide Nano Wires for Cellular Studies

Taskin M.B., Technical University of Denmark, DK

Over the years, scientific studies have shown that one crucial point when designing biological platforms is the strict environmental conditions required for cell and tissue culturing, such as pH, temperature, medium content and other parameters [...]

Gas Sensor with SAW Structures

Laposa A., Husak M., Kroutil J., Czech Technical University in Prague, Faculty of Electrical Engineering, CZ

The objective of this paper is presents the modeling and simulation of SAW (Surface Acoustic Wave) gas sensors based on one-port and two-port interdigitated metal structures. These sensors can be used for identifying environmental contaminants [...]

Robust thin spin-coated silver films with polymer thin layers for SPR image sensor applications

Son J.-H., Cho Y-J, Lee M.H., Sungkyunkwan University, KR

We fabricated thin silver films with thicknesses of 20 nm, 40 nm, and 60 nm on a prism using a spin coating method for SPR image sensor module applications. An aqueous silver ionic complex solution [...]

Electrical Nerve Agents Sensors Based on Chemically Functionalized Nanomaterials

Simonato J-P, CEA, FR

The threat of a chemical attack continues to grow and recent examples such as the terrorist attack of the Metro of Tokyo have shown that organophosphorus agents (OPs) are powerful neurotoxic weapons. There is still [...]

Comparison of Anchoring Materials for High Performance Sensors Modified with Nanoparticles and Enzymes

Gao X., Assan D., Lai J.C.K., Leung S.W., Idaho State University, US

We have previously developed some of the most sensitive biosensors/electrodes modified by Au nanoparticles and enzymes that are capable of detecting concentration levels below ppb. These sensors were fabricated with composite layers of nanomaterials and [...]

Monitoring volatiles and flammable gases without electronics

Martinez-Hurtado J.L., University of Cambridge, UK

A sensor that integrates the detection and transduction of the signal to a display is presented in this work. The device comprises a holographic grating embed in a polymer. The polymer is an elastomer that [...]

UltraDOTs : Multifunctional Ion-Selective Delivery Capsules

Walters J.D., Hall E.A.H., University of Cambridge, UK

Emerging from the sensing capabilities of the particle sensors, we have developed a platform technology to produce a family of monodisperse capsule structures ranging from the nano to the micro in their diameters and shell [...]

Topical Sensory Nanoparticles for in vivo Biomarker Detection

Patrone J., Benkoski J., Patchan M., Calderon-Colon X., Le H., Sample J., JHU/APL, US

We have recently developed a non-toxic, topically applied biosensor using solid lipid nanoparticles (SLN). This diagnostic platform is currently designed to continuously monitor hydrogen peroxide levels in skin. Overproduction of hydrogen peroxide is implicated in [...]

Calibrating the AFM with Self-Calibratable MEMS: A Theoretical Study

Li F., Clark J.V., Purdue University, US

To perform reliable scientific measurements with the atomic force microscope (AFM), it is important to calibrate the AFM cantilever. Conventional calibration methods have a 10 to 15% uncertainty, and the accuracies of such methods are [...]