Now showing items 122-141 of 206

    • Nanobioprobe for the determination of pork adulteration in burger formulations. 

      Md. Eaqub, Ali; Shuhaimi, Mustafa, Assoc. Prof Dr.; Uda, Hashim, Prof. Dr.; Yaakob, Che Man, Prof. Dr; Foo, Kai Loong (Hindawi Publishing Corporation, 2012)
      We report the development of a swine-specific hybrid nanobioprobe through a covalent integration of a fluorophore-labeled 27-nucleotide AluI-fragment of swine cytochrome b gene to a 3nm gold nanoparticle for the determination ...
    • Nanobiosensor for the detection and quantification of pork adulteration in meatball formulation 

      Md. Eaqub, Ali, Dr.; Uda, Hashim, Prof. Dr.; Shuhaimi, Mustafa; Yaakob, Che Man; Tijjani Adam, Shuwa; Qazi Muhammad, Humayun (Taylor & Francis, 2014)
      A 27-nucleotide AluI fragment of swine cytochrome b (cytb) gene was integrated to 3-nm diameter citrate–tannate-coated gold nanoparticles to fabricate a species-specific nanobiosensor. The biosensor was applied to authenticate ...
    • Nanoelectrode chrome photomask design and specification for biosensor fabrication 

      Balakrishnan, Sharma Rao; Uda, Hashim, Prof. Dr. (Trans Tech Publications, 2013)
      This paper explains the most crucial part of any microchip fabrication, which is the mask design for photolithography process. The design is initially sketched roughly to meet the design specification and later on designed ...
    • Nanoparticle sensor for label free detection of swine DNA in mixed biological samples 

      M. E., Ali; Uda, Hashim, Prof. Dr.; S., Mustafa; Y. B., Che Man; M. H. M., Yusop; Mohd Fazalul, Bari; Kh. N., Islam; M. F., Hasan (IOP Publishing Ltd., 2011-05-13)
      We used 40 5nm gold nanoparticles (GNPs) as colorimetric sensor to visually detect swine-specific conserved sequence and nucleotide mismatch in PCR-amplified and non-amplified mitochondrial DNA mixtures to authenticate ...
    • Negative Pattern Scheme (NPS) design for nanowire formation using scanning electron microscope based electron beam lithography technique 

      Mohammad Nuzaihan, Md Nor; Uda, Hashim, Prof. Dr.; Siti Fatimah, Abdul Rahman; Tijjani Adam, Shuwa (Trans Tech Publications, 2014)
      In this work, we report the used of Negative Pattern Scheme (NPS) by Electron Microscope Based Electron Beam Lithography (EBL) Technique in connection with scanning electron microscope (SEM) for creating extremely fine ...
    • New optical features to enhance solar cell performance based on porous silicon surfaces 

      A., Ramizy; Z., Hassan; K., Omar; Y., Al-Douri; M.A., Mahdi (Elsevier B.V., 2011-05)
      Electrochemical etching is used to fabricate porous silicon (PS) surfaces for both sides of the Si wafer. The effect of PS on performance of Si solar cells is investigated and the reflected mirrors are manipulated to enhance ...
    • A Novel AC technique for high quality porous GaN 

      Ainorkhilah, Mahmood; Naser Mahmoud, Ahmed, Dr.; Yuhamdan, Yusof; Yam, Fong Kwong, Dr.; Chuah, Lee Siang, Dr.; Husnen R., Abd; Zainuriah, Hassan (Electrochemical Science Group (ESG), 2013-04)
      In this paper, we report the formation of porous GaN films under a novel alternatingcurrent (sine-wave a.c. (50 Hz)) photo-assisted electrochemical etching (ACPEC) conditions. The ac formed porous GaN with excellent ...
    • Novel in-house fabrication of nano lab-on-chip devices 

      Tijjani Adam, Shuwa; Uda, Hashim, Prof. Dr.; Dhahi, Th Sabar; Leow, Pei Ling; Chee, Pei Song (Bentham Science Publishers, 2013)
      20nm SiNWs transducers have been fabricated by means of simple in-house fabrication method. A low cost, simple top-down approach has been successfully used for the fabrication of very sensitive SiNWs. The fabrication was ...
    • A novel method for the synthesis of calcium carbonate (aragonite) nanoparticles from cockle shells 

      Kh Nurul, Islam; Md Zuki, Abu Bakar, Prof. Dr.; Md. Eaqub, Ali, Dr.; Mohd Zobir, Hussein, Prof. Dr.; Noordin, Mohamed Mustapha, Prof. Dr.; Loqman, Mohamad Yusof, Dr.; Hanif, Wahid; Uda, Hashim, Prof. Dr.; Miah, Gous (Elsevier B.V., 2013-02)
      We report a simple, novel and low-cost method for the synthesis of aragonite nanoparticles from cockle shells. Aragonite is one of the least abundant biogenic polymorphs of calcium carbonate and is widely used as a biomaterial ...
    • Numerical simulation of microfluidic separators 

      Shahrul Aizzam, Ariffin; Uda, Hashim, Prof. Dr.; Tijjani Adam, Shuwa (Trans Tech Publications, 2013)
      Microfluidic devices present a powerful platform for working with living cells and even gases. Parameter such as the length and volume scales of these devices in miniaturize system makes it possible to develops and perform ...
    • Optical properties of GaN nanostructures for optoelectronic applications 

      Yarub, Al-Douri, Assoc. Prof. Dr. (Elsevier B.V., 2013)
      Electrochemical deposition method is used to prepare GaN nanostructure. The morphological studies using scanning electron microscopy (SEM), photoluminescence (PL) the refractive index and optical dielectric constant are ...
    • Optical properties of Si quantum dot potential under pressure effect 

      Yarub, Al - Douri (Trans Tech Publications, Switzerland., 2012)
      Further study of the quantum dot potential under hydrostatic pressure for Si is presented. This potential has been calculated by means of our recent empirical model. The indirect energy gap (Γ-X) is calculated using the ...
    • Optoelectronic properties of GaAs and AlAs under temperature effect 

      Yarub, Al-Douri, Assoc. Prof. Dr.; Ali Hussain, Reshak, Prof. Dr.; Uda, Hashim, Prof. Dr. (Elsevier GmbH, 2013-08)
      An application study of optoelectronic properties as a function of the temperature for GaAs and AlAs according to our model has been presented using empirical pseudopotential method (EPM). The structural phase transition ...
    • Parametric study and thickness evaluation of photoresist development for the formation of microgap electrodes using surface nanoprofiler 

      Qazi Muhammad, Humayun; Uda, Hashim, Prof. Dr. (Scientific.Net, 2012-12)
      A compact nanolaboratory on single chip is one of the challenging tasks for future reproductively of sensitive and selective lab-on-chip. This paper reports a simple and controllable technique for patterning microgap ...
    • Performance of hexagon Au electrode on ZnO thin film schottky diode gas sensor 

      Mas Elyza, Mohd Azol; Mahnaz, Shafiei, Dr.; Loew,  Pei Ling, Dr.; Foo, Kai Loong; Uda, Hashim, Prof. Dr.; Rashidah @ Siti Saedah, Arsat, Dr. (International Frequency Sensor Association (IFSA), 2013)
      This paper presents an analysis of Schottky diode performance with the utilization of zinc oxide (ZnO) thin film as a gas sensor. The presented device is implemented with new type of electrode shape which is hexagon compared ...
    • Plant diseases detection using nanowire as biosensor transducer 

      Shahrul Aizzam, Ariffin; Tijjani Adam, Shuwa; Uda, Hashim, Prof. Dr.; Faridah, Salam; Zamri, Ishak; Muhammad Nur Aiman, Uda (Trans Tech Publications, 2014)
      The plant disease such as Cucumber Mosaic Virus (CMV) and Papaya Ring Spot Virus (PRSV) is a most dangerous disease that can decrease productivity and quality of the vegetable and fruit. Besides that, its also can destroy ...
    • Platelet-derived growth factor oncoprotein detection using three-dimensional carbon microarrays 

      Penmatsa, Varun; Ruslinda, A. Rahim; Majid, Beidaghi; Kawarada, Hiroshi; Chunlei, Wang (Elsevier, 2013-01)
      The potential of aptamers as ligand binding molecule has opened new avenues in the development of biosensors for cancer oncoproteins. In this paper, a label-free detection strategy using signaling aptamer/protein binding ...
    • 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 ...
    • Polysilicon nanowire fabrication as a transducer for fast reaction assays in nano lab-on-chip domain 

      Tijjani Adam, Shuwa; Uda, Hashim, Prof. Dr.; Dhahi, Th Sabar; Foo, Kai Loong; Leow, Pei Ling; Chee, Pei Song (American Scientific Publishers, 2013-02)
      The difficulty with the treatment of cancer is caused by lack of ability to detect the tumor associated with the disease at the early stage. Often, cancer is detected in its later stages, when it has compromised the function ...
    • Potentiality of polysilicon nanogap structure for label-free biomolecular detection 

      Thikra S., Dhahi; Uda, Hashim, Prof. Dr.; Md Eaqub, Ali, Dr. (Emerald Group Publishing Limited, 2013)
      Purpose - The purpose of this paper was to systematically study the electrical properties of 5-, 42- and 75-nm gap polysilicon structures to evaluate the potentiality of these structures to be used in biomolecular sensing ...