Results 211 to 220 of about 3,673 (237)

Piezoresistive detection of acoustic waves

Review of Scientific Instruments, 2003
A simple and cost-effective method for detecting propagation of acoustic waves based on the harmonic oscillations of a piezoresistive microcantilever is presented. Monitoring the Fourier amplitude of the microcantilever’s fundamental frequency, the dependence of the detected amplitude upon the acoustic source location, is measured.
A. Passian, P. G. Evans, V. K. Varma, T. L. Ferrell, T. Thundat   +4 more
openaire   +1 more source

Piezoresistive Microcantilevers for Biomolecular Force Detection

2007 Spanish Conference on Electron Devices, 2007
This paper reports the development of piezoresistive microcantilevers for the detection of biomolecules by the measurement of intermolecular binding forces. The detection of the small forces involved in molecular recognition (
Guillermo Villanueva, Gemma Rius, Josep Montserrat, Francesc Perez-Murano, Joan Bausells   +4 more
openaire   +1 more source

Antibody-based protein detection using piezoresistive cantilever arrays

Nanotechnology, 2007
A piezoresistive cantilever array platform with electrical read-out was applied for protein detection using GST (glutathione-S-transferase) and GST antibodies as a model system. Sensing was performed in the static deflection mode under constant flow conditions. The GST antibodies were directly immobilized on the cantilever gold surface by means of free
Dauksaite, V., Lorentzenn, M., Besenbacher, Flemming, Kjems, Jørgen   +3 more
openaire   +2 more sources

Remote infrared radiation detection using piezoresistive microcantilevers

Applied Physics Letters, 1996
A novel micromechanical infrared (IR) radiation sensor has been developed using commercially available piezoresistive microcantilevers. Microcantilevers coated with a heat absorbing layer undergo bending due to the differential stress between the top layer (coating) and the substrate.
P. G. Datskos, P. I. Oden, T. Thundat, E. A. Wachter, R. J. Warmack, S. R. Hunter   +5 more
openaire   +1 more source

Silicon Microcantilevers with Piezoresistive and MSE Detection

2009 Spanish Conference on Electron Devices, 2009
We have fabricated 340 nm thick U-shaped microcantilevers with electrical output to be used as sensors for biomolecular detection, which requires a force resolution better than 100 pN. Piezoresistors or MOS transistors have been used as integrated electromechanical transducers. The devices have been fabricated by N-type doping using As ion implantation
Giordano Tosolini, Guillermo Villanueva, Joan Bausells   +2 more
openaire   +1 more source

Microbridges simulation for piezoresistive gas sensors detection

Proceedings. International Semiconductor Conference, 2003
A microbridges software simulation has been made using "CoventorWare 2001.3", from Coventor Inc. Within this program, we used the piezoresistive module. The microbridges are made of silicon, and the piezoresistive part is the device itself. The resonant microbridges change their resistance when the gas-sensitive layer adsorbs gas molecules from the ...
B. Firtat, C. Moldovan, D. Dascalu
openaire   +1 more source

Polysilicon piezoresistive cantilevers for intermolecular force detection

Conference on Electron Devices, 2005 Spanish, 2005
We describe the development of polycrystalline silicon piezoresistive micro/nanocantilevers for the measurement of intermolecular forces in biochemical sensing. The cantilevers have been fabricated both in a dedicated technology and in a commercial CMOS technology with an additional micromachining postprocessing. The sensitivity and resolution required
G. Villanueva, J. Bausells, J. Montserrat, F. Perez-Murano   +3 more
openaire   +1 more source

Mechanical detection of liposomes using piezoresistive cantilever

Sensors and Actuators B: Chemical, 2006
Abstract This paper firstly reports the mechanical and real-time detection of liposomes using the highly sensitive microfabricated piezoresistive cantilever sensor chip and liposome–protein interaction. The cantilevers were functionalized with the chemically modified protein C2A which recognizes the phosphatidylserine (PS) exposed on the surface of ...
Seok-Jung Hyun, Hyun-Seok Kim, Yong-Jun Kim, Hyo-Il Jung   +3 more
openaire   +1 more source

Nanomechanical detection of phospholiposome using piezoresistive cantilever sensor

The 13th International Conference on Solid-State Sensors, Actuators and Microsystems, 2005. Digest of Technical Papers. TRANSDUCERS '05., 2005
Here, we firstly report the detection of phospholiposomes by the highly sensitive microfabricated piezoresistive cantilever sensor chip and the phosphatidylserine (PS) recognition protein C2A which is chemically immobilized on the sensor surface. The signal created from the bending motion of the piezoresistive cantilever after the phospholiposome ...
S.J. Hyun, H.S. Kim, Y.J. Kim, H.I. Jung
openaire   +1 more source

Viral detection using an embedded piezoresistive microcantilever sensor

Sensors and Actuators A: Physical, 2003
The detection of aerosol-based vaccinia virus and solution-based vaccinia virus has been studied using a new type of microsensor design. In the embedded piezoresistive microcantilever (EPM) sensor, a tiny piezoresistive microcantilever is embedded or partially embedded into an active sensing material whose volumetric response to the presence of an ...
R.L. Gunter, W.G. Delinger, K. Manygoats, A. Kooser, T.L. Porter   +4 more
openaire   +1 more source