Tag Archives: Kashif Islam

Multi-LED light source for hyperspectral imaging

15 December 2017:

A multi-LED light source has been investigated by CNBP researchers for use in hyperspectral imaging. The research featured in the journal ‘Optics Express’  with the lead author on the paper, PhD student Kashif Islam, based at Macquarie University.

Journal: Optics Express.

Publication titleMulti-LED light source for hyperspectral imaging.

Author: Kashif Islam, Martin Ploschner, and Ewa M. Goldys.

Abstract: We investigate a novel light source design for efficient collection of UV light from multiple LEDs. The design is based on a truncated cone with a large circular lid incorporating LEDs on one side, and a small circular exit aperture (diameter of 9 mm) on the other side. The exit aperture size allows a simple coupling with secondary optics of a microscope for hyperspectral imaging that requires a wide spectrum of frequencies of illuminating light. The light collection efficiency was optimized with respect to cone length and diameter of the LED lid. In all simulations, we use a highly UV-reflecting aluminum coating on the inner surfaces of the cone. The influence of the LED positions on the cone efficiency is determined by varying the LED distance from the central axis as well as the interLED distance. We found the maximum efficiency of the cone is realized for LEDs positioned at the center, and the shorter is the inter-LED distance, the better is the performance of the light source.

Welcome to Kashif and Jason at MQ Node

17 April 2015:Kashif and Jason at MQ

Last week Macquarie node welcomed two new PhD students who joined Ewa Goldys’ group.

Kashif Islam (left) hails from Pakistan. His project is concerned with expanding the range of fluorophores that can be non-invasively quantified in cells and tissues. This work will have components of hardware development, photochemistry and photobiology.  Kashif  will be part of the hyperspectral team working with Martin Gosnell, Ayad Anwer, Biju Cletus, Saabah Mahbub and Aziz Rehman and external partners. We hope he will be able to observe tryptophan, kyneurenine and collagen, which will open up exciting options for CNBP.

Wenjie Jason Chen (right) came from China. He is developing specialised nanoparticles which will be targeted to receptors of interest and deliver their cargo following a trigger. He will be working with Wei Deng and external partners working towards translational medical objectives.

We are excited to have Jason and Kashif here and looking forward to seeing their results soon.