Browsing Systems Design Engineering by Author "Yeow, John"
Now showing items 1-10 of 10
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Antibacterial Porous Polymeric Monolith Columns with Amphiphilic and Polycationic Character on Cross-linked PMMA Substrates for Cell Lysis Applications
Aly Saad Aly, Mohamed; Nguon, Olivier; Gauthier, Mario; Yeow, John (The Royal Society of Chemistry: RSC Advances, 2013-10-09)The application of porous polymeric monolith (PPM) columns as an effective tool for bacterial cell lysi within microfluidic chips is demonstrated. By taking advantage of the large surface area and controllable pore size ... -
Bismuth Sulfide Nanoflowers for Detection of X-rays in the Mammographic Energy Range
Yeow, John; Osei, Ernest K; Nambiar, Shruti (Nature, 2015-03-24)The increased use of diagnostic x-rays, especially in the field of medical radiology, has necessitated a significant demand for high resolution, real-time radiation detectors. In this regard, the photoresponse of bismuth ... -
Compensated Row-Column Ultrasound Imaging System Using Fisher Tippett Multilayered Conditional Random Field Model
Yeow, John; Ben Daya, Ibrahim; CHEN, ALBERT I-HSIANG; Shafiee, Mohammad Javad; Wong, Alexander (PLOS, 2015-12-11)3-D ultrasound imaging offers unique opportunities in the field of non destructive testing that cannot be easily found in A-mode and B-mode images. To acquire a 3-D ultrasound image without a mechanically moving transducer, ... -
A flexible, scalable, and self-powered mid-infrared detector based on transparent PEDOT: PSS/graphene composite
Zhang, Mingyu; Yeow, John (Elsevier, 2020-01)A flexible, self-powered and semi-transparent mid-infrared photodetector is demonstrated with graphene and poly(3,4-ethylenedioxythiophene): poly(4-styrenesulfonate) (PEDOT: PSS) composite on poly vinyl alcohol (PVA) ... -
Lysis of Gram-positive and Gram-negative Bacteria by Antibacterial Porous Polymeric Monolith Formed in Microfluidic Biochips for Sample Preparation
Aly Saad Aly, Mohamed; Gauthier, Mario; Yeow, John (Springer-Verlag Berlin Heidelberg: Analytical and Bioanalytical Chemistry, 2014-07-25)Bacterial cell lysis is demonstrated using polymeric microfluidic biochips operating via a hybrid mechanical shearing/contact killing mechanism. These biochips are fabricated from a cross-linked poly(methyl methacrylate) ... -
A novel deflection shape function for rectangular capacitive micromachined ultrasonic transducer diaphragms
Yeow, John; Sun, Zhendong; Wong, Lawrence; Suo, Xudong; Sun, Weijie; Zheng, Zhou (Elsevier, 2015-07-15)A highly accurate analytical deflection shape function that describes the deflection profiles of capacitive micromachined ultrasonic transducers (CMUTs) with rectangular membranes under electrostatic pressure has been ... -
On-chip cell lysis by antibacterial non-leaching reusable quaternary ammonium monolithic column
Aly Saad Aly, Mohamed; Gauthier, Mario; Yeow, John (Springer US: Biomedical Microdevices, 2015-12-16)Reusable antibacterial non-leaching monolithic columns polymerized in microfluidic channels designed for on-chip cell lysis applications were obtained by the photoinitiated free radical copolymerization of diallyldimethylammonium ... -
Plausibility of Image Reconstruction Using a Proposed Flexible and Portable CT Scanner
Yeow, John; Orchard, Jeff; Kim, Hwa Young (Bentham Open, 2012-06-04)The very hot and power-hungry x-ray filaments in today's computed tomography (CT) scanners constrain their design to be big and stationary. What if we built a CT scanner that could be deployed at the scene of a car accident ... -
Self-powered on-line ion concentration monitor in water transportation driven by triboelectric nanogenerator
Chen, Chen; Wen, Zhen; Wei, Aimin; Xie, Xinkai; Zhai, Ningning; Wei, Xuelian; Peng, Mingfa; Liu, Yina; Sun, Xuhui; Yeow, John (Elsevier, 2019-08)Ion concentration in water is a key criterion for evaluating water quality. In this work, we developed a self-powered on-line ion concentration monitor in water transportation based on impedance matching effect of triboelectric ... -
Wrist and Finger Gesture Recognition with Single-element A-mode Ultrasound signal: A Comparison with Single-channel Surface Electromyogram
He, Jiayuan; Luo, Henry; Jia, Jie; Yeow, John; Jiang, Ning (Institute of Electrical and Electronics Engineers, 2018-10-01)With the ability to detect volumetric changes of contracting muscles, ultrasound (US) was a potential technique in the field of human-machine interface (HMI). Compared to the US imaging (B-mode US), the signal from a static ...