Publications

Exploration of 3D-printed lenses in a confocal MEMS microscope concept

Christopher Jay, Rooney Liam, Uttamchandani Deepak, McConnell Gail, Bauer Ralf

2024 International Conference on Optical MEMS and Nanophotonics (OMN) International Conference on Optical MEMS and Nanophotonics (OMN) 2024 (2024)

https://doi.org/10.1109/OMN61224.2024.10685254

Using 3D printed optical elements for multifocal image scanning microscopy

Christopher Jay, Donnachie Mark, Rooney Liam, McConnell Gail, Uttamchandani Deepak, Bauer Ralf

Proceedings of SPIE Vol 12827 (2024)

https://doi.org/10.1117/12.3002507

A multi-colour 2D and 3D structured illumination microscope using MEMS scanning mirrors

Tinning Peter W, Christopher Jay, Donnachie Mark, Uttamchandani Deepak, Bauer Ralf

Proc. SPIE 12849 Single Molecule Spectroscopy and Superresolution Imaging XVII SPIE BiOS 2024 Proc. Single Molecule Spectroscopy and Superresolution Imaging Vol 12849 (2024)

https://doi.org/10.1117/12.3002511

Low-cost 3D printed lenses for brightfield and fluorescence microscopy

Christopher Jay, Rooney Liam M, Donnachie Mark, Uttamchandani Deepak, McConnell Gail, Bauer Ralf

Biomedical Optics Express Vol 15, pp. 2224-2237 (2024)

https://doi.org/10.1364/BOE.514653

Increasing MEMS micromirror line-scan rates through 3D-printed micro-optics

Christopher Jay, Donnachie Mark, Uttamchandani Deepak, Bauer Ralf

2023 International Conference on Optical MEMS and Nanophotonics (OMN) and SBFoton International Optics and Photonics Conference (SBFoton IOPC) International Conference on Optical MEMS and Nanophotonics (OMN) 2023 International Conference on Optical MEMS and Nanophotonics (OMN) and SBFoton International Optics and Photonics Conference (SBFoton IOPC) (2023)

https://doi.org/10.1109/OMN/SBFotonIOPC58971.2023.10230934

Remote-refocus microscopy using a MEMS piston micromirror

Christopher Jay, Rooney Liam, Uttamchandani Deepak, Bauer Ralf

Microscience Microscopy Congress 2023 (2023)

More publications

Research Interests

• Optical MEMS and optofluidics
• MEMS, microsensors and microactuators including directional MEMS microphones
• MEMS lasers and MEMS based single-pixel imaging
• Opto-electronic instrumentation systems including photo-acoustics
• Fibre optic sensors for physical and chemical measurements
• Optical frequency domain reflectometry
• Nanometric resolution optical sensors using optical fibre nanotips
• Optical multiplexed networks based on spread spectrum techniques
• Optical waveguiding in silicon

Professional Activities

Royal Society of Edinburgh Sectional Committee (External organisation)

Advisor

1/9/2022

PhD Examiner in Acoustic Waveguiding, EEE Department, Imperial College London

Examiner

6/2022

ISOEN 2022 (Co-Treasurer)

Participant

29/5/2022

Engineering and Physical Sciences Research Council (External organisation)

Advisor

16/3/2022

IEEE Sensors Council, President-Elect, 2022-2023 (External organisation)

Advisor

1/1/2022

Royal Society of Edinburgh Sectional Committee (External organisation)

Advisor

1/9/2021

More professional activities

Projects

Doctoral Training Partnership 2018-19 University of Strathclyde | Donnachie, Mark

Bauer, Ralf (Principal Investigator) Uttamchandani, Deepak (Co-investigator) Donnachie, Mark (Research Co-investigator)

01-Jan-2018 - 01-Jan-2022

Fast-tracking Health Innovation for NHS Scotland (MRC Confidence in Concept 2017) / R170262-103

Flockhart, Gordon (Principal Investigator) Uttamchandani, Deepak (Co-investigator)

01-Jan-2017 - 28-Jan-2019

AFRC Route to Impact - Photonics in Advanced Manufacturing: Large stand-off NDT using laser ultrasonics

Flockhart, Gordon (Principal Investigator) Uttamchandani, Deepak (Co-investigator) Pierce, Gareth (Co-investigator) Blue, Robert (Researcher)

01-Jan-2016 - 28-Jan-2017

OPTIMA - Defining tumour margins using next generation photoacoustic imaging

Flockhart, Gordon (Principal Investigator) Uttamchandani, Deepak (Academic) Faulds, Karen (Academic) Graham, Duncan (Principal Investigator) Brunton, Val (Academic)

Photoacoustic imaging (PAI) overcomes one of the main limitations of optical microscopies, namely their difficulty with imaging tissue samples of thickness greater than a few hundred micrometres, due to the strong light scattering from biological tissue which reduces image contrast and resolution. PAI overcomes this problem by focusing pulsed laser light deep inside tissue samples, thereby generating wideband acoustic waves (via an optical-thermal-mechanical process) which are detected ultrasonically to generate an image.

01-Jan-2016 - 01-Jan-2020

Nanoanalysis for Advanced Materials and Healthcare - EPSRC strategic equipment

Martin, Robert (Principal Investigator) Edwards, Paul (Co-investigator) Faulds, Karen (Co-investigator) Florence, Alastair (Co-investigator) Graham, Duncan (Co-investigator) Sefcik, Jan (Co-investigator) Ter Horst, Joop (Co-investigator) Trager-Cowan, Carol (Co-investigator) Uttamchandani, Deepak (Co-investigator) Wark, Alastair (Co-investigator)

This proposal seeks funding to deliver enhanced capability for characterising and assessing advanced nanomaterials using three complementary, leading edge techniques: Field-emission microprobe (EPMA), combined Raman/multiphoton confocal microscope (Raman/MP) and small angle X-ray scattering (SAXS). This suite of equipment will be used to generate a step-change in nanoanalysis capability for a multi-disciplinary team of researchers who together form a key part of Strathclyde's new Technology and Innovation Centre (TIC). The equipment will support an extensive research portfolio with an emphasis on functional materials and healthcare applications. The requested equipment suite will enable Strathclyde and other UK academics to partner with other world-leading groups having complementary analytical facilities, thereby creating an international collaborative network of non-duplicated facilities for trans-national access. Moreover the equipment will generate new research opportunities in advanced materials science in partnership with the National Physical Laboratory, UK industry and academia.

08-Jan-2015 - 07-Jan-2019

Novel directional microphone design for speech enhancement in complex environments

Windmill, James (Principal Investigator) Jackson, Joseph (Co-investigator) Uttamchandani, Deepak (Co-investigator)

"In the UK, more than 50% of people over 60 suffer from hearing loss, but only 20% of them actually use hearing aids. Part of this poor take-up is due to issues with current hearing aids, including poor sound quality and poor performance in noisy and complex environments. But one feature of hearing aids that does help people is a directional microphone, made-up from a combination of digital signal processing and two (at least) separate actual microphones. These can reject noises from the back or the side of the user. They help the user but come with severe problems. They add extra cost, weight, and power requirements. They have to be a certain distance apart, severely constricting the design of the hearing aid as a whole. And, with just two microphones accuracy is quite limited: they can tell whether a sound source is in front or behind, but struggle to detect sounds from below or above, such as echoes in a large room.

Despite remarkable advances in sound analysis in hearing aids, the actual microphone itself has remained essentially unchanged for decades. Here, we aim to solve the problems of current directional technology by instead using a new type of miniature directional microphone, inspired by how some insects tackle the problem of locating sounds. This new device retains its directionality while keeping the miniature dimensions similar to an insect ear. The research project will take the new insect-inspired microphone design and evaluate it as a component for hearing aids. From this initial evaluation, there will be an iterative process of new, improved, designs being simulated, fabricated, lab tested, and then evaluated. The end result will be microphones that can significantly solve the problems faced in hearing aid design.

The primary objective is to create a hearing aid system that can reduce or control unwanted noises, focusing the hearing aid on only the sound arriving from in front of the user. This includes reducing noises not only from behind, but above, below and distant, so for example reducing the problems caused by echoes from floors and ceilings. The research will also look at problems caused by the distance from which a sound emanates, for example how to separate a sound from a loud source far away, like a train or plane, from a quiet sound from nearby, like a human voice. Finally, the new microphones will require new mounting methods in hearing aid devices. The project will investigate using 3D printing techniques to achieve this. This allows the research to consider how to optimise the hearing aid housing so that it works best acoustically in conjunction with the new microphone, and how it might be possible to extend that to produce hearing aids that are personalised for both the user's ear and their user's sense of hearing."

01-Jan-2015 - 28-Jan-2019

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