Mohd Firdaus Abdullah

Mohd Firdaus Abdullah
Universiti Teknologi MARA | UiTM · Faculty of Electrical Engineering

About

15
Publications
1,482
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48
Citations
Citations since 2016
0 Research Items
19 Citations
201620172018201920202021202202468
201620172018201920202021202202468
201620172018201920202021202202468
201620172018201920202021202202468
Introduction
Skills and Expertise

Publications

Publications (15)
Conference Paper
Full-text available
Previously, many researches had been done on non-invasive using near-infrared sensing. Sia had investigated near-infrared sensing using signal penetrating finger method. However, by using finger penetration, there are no results obtained. He only obtained signal using glucose concentration. Therefore the objectives of this research are to investiga...
Conference Paper
This project uses a non-invasive method for measuring the blood glucose concentration levels. By implementing two infrared light with different wavelength; 940nm and 950nm based on the use of light emitting diodes and measure transmittance through solution of distilled water and d-glucose of concentration from 0mg/dL to 200mg/dL by using a 1000nm p...
Conference Paper
This paper presents the development of microcontroller based potentiometric indicator system for integration with piezoresistive MEMS sensor. The purpose system involved the integration between hardware and software subsystem. For hardware subsystem, the design of potentiometric circuit was tested using P-spice software and breadboard circuit. Then...
Conference Paper
This paper presents a comparative study on low noise precision difet operational amplifier, OPA111 and low noise operational amplifier, OP27 for potentiometric transduction circuit. Methods for integration of piezoresistive MEMS sensor with the potentiometric transduction circuit have reported successes. There was a need for a low noise operational...
Conference Paper
This paper concerns miniaturization using Surface Mount Technology (SMT) of potentiometric indicator system for measuring human stress. The piezoresistive MEMS sensor is integrated with potentiometric indicator system that converts a biochemical signal into a measurable signal. The overall project involved transduction stage, filtering, voltage fol...
Conference Paper
This paper concerns the development of a potentiometric instrumentation circuit for integration with a PZR microcantilever biosensor to detect human stress. It embodies the design of transduction, filtering, stabilization and linearization of micro-signals from a biosensor. The sensing principle is based on immobilization of the bio-receptor to pro...
Article
This paper describes design and development of transduction, filtering, stabilisation and linearization stages of a potentiometric circuit to convert micro-signals from a PZR microcantilever biosensor into readable signals for human stress. The biosensing principle is based on immobilization of the bioreceptor to produce a biochemical reaction. The...
Article
This paper presents a study on electrode for the amperometric detection of human stress based on salivary alpha amylase, emulated with different concentration of glucose, with the flow injection analysis biosensing system. Amperometric detection is an electrochemical voltammetric measurement approach, where the current intensity in a detection cell...
Article
This paper deals with the development of Piezoresistive Microcantilever biosensor and the signal transduction to detect human stress by using salivary alpha amylase activity. A Piezoresistive Microcantilever biosensor can be used to detect saliva-amylase activity by deflecting upon interaction with a specific receptor. By measuring the amount of be...
Article
This paper deals with the development of Piezeoresistive Microcantilever biosensor and the signal transduction to detect human stress by using salivary alpha amylase activity. A Piezoresistive Microcantilever biosensor can be used to detect saliva-amylase activity by deflecting upon interaction with a specific receptor. By measuring the amount of b...
Article
This paper deals with the development of a low cost self-sensing Piezeoresistive Microcantilever Biosensor to detect human stress using salivary alpha amylase activity. The salivary alpha amylase enzyme will immobilize on to the Piezeoresistive Microcantilever biosensor to detect activity during the enzyme responses. When the Microcantilever beam d...
Conference Paper
This paper concerns the development and design of filtering and linearization stage of potentiometric transducer to measure human stress level based on salivary amylase activity. The design of this new way approached is implemented using Cadence OrCAD Capture CIS 15.7 software and hardware construction and troubleshooting. From the previous researc...
Conference Paper
Full-text available
This paper concerns the development of a potentiometric transduction circuit for a piezoresistive MEMS sensor to detect human stress. The biosensor is comprised of a bioreceptor and a transducer. The sensing principle is based on immobilization of the bioreceptor to produce a biochemical reaction. The novel piezoresistive microcantilever sensor int...
Article
This paper describes the fabrication process of a piezoresistive microcantilever sensor that is used as a platform for biological sensing such as salivary amylase‐activity. The 0.5 μm‐thick piezoresistive sensors are made on polysilicon‐based cantilever beam. This surface micromachined microcantilever is based on silicon wafers and fabricated usin...
Article
This paper presents a design for a low cost 2-electrodes conductivity control system for small scale wastewater treatment system, such as that from etching process of printed circuit board. It involves the design of a conductivity sensing probe, its associated control circuitry and an actuation mechanism. The conductivity sensor applies a direct cu...

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