Browsing Uda Hashim, Prof. Ts. Dr. by Subject "Capacitance"

Now showing items 1-6 of 6

    • Application of gold nanoparticles for electrochemical DNA biosensor 

      Ahmed Mishaal, Mohammed; Ruslinda, Abdul Rahim, Dr.; Ibraheem Jaleel, Ibraheem; Foo, Kai Loong; Hasrul Hisham, Che Ahmad; Uda, Hashim, Prof. Dr.; Yarub, Al-Douri, Assoc. Prof. Dr. (Hindawi Publishing Corporation, 2014)
      An electrochemical DNA biosensor was successfully fabricated by using (3-aminopropyl)triethoxysilane (APTES) as a linker molecule combined with the gold nanoparticles (GNPs) on thermally oxidized SiOthin films. The SiOthin ...

    • DNA hybridization detection using 5-nm polysilicon nanogap structure 

      Thikra S., Dhahi; Md Eaqub, Ali, Dr.; Uda, Hashim, Prof. Dr.; Nor Azah, Yusof; Ihsan M., Ali; M. J., Ashoor; A., Al-Roumy; H.A, Hadi (Bentham Science Publishers., 2013)
      This report described a polysilicon nanogap biosensor for the detection of target DNA hybridization which is a key step in biodiagnostics, gene expression profiling, environmental monitoring and forensic investigation. The ...

    • Low cost detection of pH and its effect on the capacitive behavior of micro-gap sensor 

      Qazi Muhammad, Humayun; Uda, Hashim, Prof. Dr.; Tijjani Adam, Shuwa (Trans Tech Publications, 2014)
      The article describes the fabrication and characterization of silver microgap sensor on silicon substrate. By employing cheap photolithography process the proposed microgap sensor has been fabricated. The silver microgap ...

    • Polysilicon nanogap fabrication using a thermal oxidation process 

      Dhahi, T.S; Uda, Hashim, Prof. Dr.; Md. Eaqub, Ali; Nazwa, Taib (Emerald Group Publishing Limited., 2012)
      Purpose - Nanogap electrodes have important applications in power saving devices, electrochemical sensors and dielectric detections of biomolecules. The purpose of this paper is to report on the fabrication and characterization ...

    • A review on the electrochemical sensors and biosensors composed of nanogaps as sensing material 

      Dhahi, T. H. S.; Uda, Hashim, Prof. Dr.; Ahmed, N. M.; Mat Taib, A. (National Institute of Research and Development for Optoelectronics, 2010)
      In the past two decades, the biological and medical fields have seen great advances in the development of biosensors and biochips capable of characterizing and quantifying biomolecules.To understand the important relationship ...

    • A silicon-oxide-silicon vertically separated electrode nanogap device structure 

      Noor, N. H. M.; Uda, Hashim, Prof. Dr.; Muhamad Emi Azry, Shohini; Nuri, A. M. M. (American Institute of Physics, 2009-06-01)
      In this study, we present a simple method to form a nanogap between two silicon contacts separated by a thin oxide gap. We also demonstrate the validity of dielectric spectroscopy results of two wafer samples (different ...