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Ahmad Rifqi Md Zain
Researcher at National University of Malaysia
Publications - 77
Citations - 644
Ahmad Rifqi Md Zain is an academic researcher from National University of Malaysia. The author has contributed to research in topics: Photonic crystal & Photonics. The author has an hindex of 10, co-authored 63 publications receiving 543 citations. Previous affiliations of Ahmad Rifqi Md Zain include Harvard University & University of Bristol.
Papers
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Book ChapterDOI
Local existence theorems for ordinary differential equations of fractional order
TL;DR: In this article, the Picard method and the Schauder fixed-point theorem were used to prove local existence in the initial value problem of a real-valued function g, where g denotes the derivative of order α of a function g; γ(α) is the Gamma function where α > 0; and b is a real number.
Journal ArticleDOI
Characterization of graphene based capacitive microphone
TL;DR: In this article, the authors focused on the design, fabrication and characterization of the graphene-based capacitive microphone, and the contribution of the van der Waals force between the graphene layer as a diaphragm and the substrate is presented.
Proceedings ArticleDOI
Design segmented slot waveguide for integrated waveguide modulator
TL;DR: In this paper, a theoretical investigation of overlap factors and low half voltage for different segmented slot waveguide structures to determine optimised geometrical dimensions based on slot widths is presented.
Journal ArticleDOI
Improvement of integrated electric field sensor based on hybrid segmented slot waveguide
Musab A. M. Al-Tarawni,Ahmad Ashrif A Bakar,Ahmad Rifqi Md Zain,Mou'ad A. Tarawneh,Sahrim Ahmad +4 more
TL;DR: In this article, the authors investigated a modification by adding a Si layer beneath a segmented slot waveguide (SSW) and optimizing the hybrid SSW as the core of a sensor to determine the sensor features in terms of the frequency response and sensitivity.
Journal ArticleDOI
High sensitivity au-based Kretschmann Surface Plasmon Resonance sensor for urea detection
P. Susthitha Menon,Fairus Atida Said,Siew Mei Gan,Mohd Ambri Mohamed,Ahmad Rifqi Md Zain,Sahbudin Shaari,Burhanuddin Yeop Majlis +6 more
TL;DR: In this article, a Kretschmann-based Surface Plasmon Resonance (SPR) optical sensor was applied to detect the presence of kidney wastes such as urea in solutions.