Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Biosensors

Preparation N/M Polycrystalline ZnO Particles for Biosensor Platform Applications

Shatha Shammon Batros Jamil

Engineering and Technology Journal, 2014, Volume 32, Issue 3, Pages 595-606

This work reports the syntheses of preparation nano/micro size zinc oxide with polyanaline. ZnO particles were synthesized by simple and efficient method in aqueous media from zinc nitrate without any requirement of calcinations step at high temperature. These particles were characterized by X-Ray Diffraction (XRD), Fourier Transform Infrared analysis (FTIR), X-Ray Florescence (XRF), optical transmittance microscope (OTM). The particles distribution size (PDZ)) of powder are calculated. Optical properties of ZnO films by uv-visible and PL spectra for PANi, ZnO/PANi were studied also. This review highlights the potential use of ZnO in modified biosensing applications.

Influence of Shape Design of MEMS (Micro-Cantilever Based Sensor) on High-Sensitivity

Ibtissam Mahdi Shihab

Engineering and Technology Journal, 2012, Volume 30, Issue 20, Pages 3581-3595

In this paper, a novel analysis was carried out on the biosensor microcantilevers
in order to increase the sensitivity of a micro- cantilever based
biosensor piezoresistive. Holes were made and compared with the basic
rectangular (R), triangular (T), and step(S) profile cantilever. Effect of changing
the micro-cantilevers profile and its cross-section shape was investigated. A finite
element ANSYS was used to analyze these models. The micro-cantilevers are
made of silicon with elastic modulus 130Gpa and poisson’s ratio 0.28. Several
cases were studied by making one, two and three holes in each biosensor
piezoresistive micro-cantilevers (rectangular (R), triangular (T), and step(S) profile
cantilever). Results showed that triangular micro-cantilever with two holes (T22)
has the better sensitivity, also showed T12 respectively 61.7% and 65% higher
sensitivity than R12, S12.