Sensors – Chemical, Physical & Bio – Page 20

Fluorescent Silica Nano-Particles and Magnetic Bead Based Immunoassay: an Optical Tool for Detection of Staphylococcal enterotoxin B in Milk for High-Throughput Screening

Rastogi S.K., Branen J.R., Gibbon S., Larry Branen A., University of Idaho, US

This paper describes the use of fluorescent silica nanoparticles (FSNPs) as luminescent signal amplifiers in biological system based on digital counting of individual particles and measuring of average fluorescence intensity, because FSNPs emit intense yellow-green [...]

Optical chemical sensors on the base of arrays of ink-jet printed micro- and nanoparticles

Alfimov M.V., Sazhnikov V.A., Khlebunov A.A., Ionov D.S., Petrov A.N., Aristarkhov V.M., Men’shikova A.Y., Shevchenko N.N., Yakimansky A.V., Kalinin D.V., Plekhanov A.I., Photochemistry Center of RAS, RU

Array-based optical chemical sensors is a topic of growing interest for researchers. The main advantage of such systems is the possibility of optimizing the performance of sensor array by means of “tuning” individual sensor elements. [...]

Gas Sensing Properties of Zn-Doped Anisometric Fe2O3 Nanoparticles

Kim T., Sharp A.C., Yim H., Guo B., Texas A&M University, College Station, US

In this study, we synthesized nanocrystalline Zn-doped Fe2O3 by flame spray pyrolysis under different conditions, and then investigated the gas sensing characteristics of these particles. The response of the gas sensor to acetone vapor in [...]

Pierced Sensor for Nano-Microscope

Sklyar R., Independent researcher, UA

For nonzero drain voltages the superconducting field-effect transistor (SuFET) absorbs low- frequency power of the average Josphson current and re-emits this power at extremely high frequencies. The feasibility of the transistor function on a yarn-like [...]

Sensors and Systems

Feasibility Study of Cochlear-like Acoustic Sensor using PMN-PT Single Crystal Cantilever Array

Hur S., Lee S.Q., Kim W.D., Korea Institute of Machnery & Materials, KR

The mammalian cochlea is an organ that performs the conversion of the incoming mechanical energy into electrical signals in the auditory nerve fibers. Current cochlear Implants have been developed in an effort to restore sensorineural [...]

Multiband THz detection and imaging devices

Popa-Simil I.L., Popa-Simil L., Popa-Simil I.L., Popa-Simil L., LAVM Llc., US

Terahertz imaging finds more and more applications in homeland security, medical, and life sciences applications. While THz sources and detection systems are gaining ground, the ability of electronics conversion systems to keep up with the [...]

Nano-gap high quality factor thin film SOI MEM resonators

Grogg D., Tekin C.H., Badila-Ciressan D.N., Tsamados D., Mazza M., Ionescu M.A., Ecole Polytechnique Fédérale de Lausanne, CH

A 1.25 m thin SOI micro-electro-mechanical (MEM) resonator with a quality factor of 100’000 at 24.6 MHz is demonstrated. A nanogap fabrication process allows the fabrication of < 200 nm gaps, allowing for low polarization [...]

10GHz Surface Acoustic Wave Filter Fabrication by UV Nano-Imprint

Chen H.J.H., Chen N.H., Chen H.J.H., Chen N.H., Lin C.H., Huang F.S., National Tsing Hua University, TW

Surface acoustic wave (SAW) devices have been widely implemented for wireless communications. Recently, SAW devices continue the upward trend in frequency for higher functionality. Nanoimpirnt can adequately offer mass production technique on interdigital transducer (IDT) [...]

Deposition of functional PZT films as actuators in MEMS devices by high rate sputtering

Quenzer H.-J., Dudde R., Jacobsen H., Wagner B., Föll H., Fraunhofer ISIT, DE

Crack and void free polycrystalline Lead Zirconate Titanate (PZT) films in the range of 5 µm to 10 µm have been successfully deposited on silicon substrates using a novel high rate gas flow sputtering process. [...]