Laser Powered Miniature Bionic Devices

Feasibility Assessment of an Optically Powered Digital Retinal Prosthesis Architecture for Retinal Ganglion Cell Stimulation

W Lemaire, M Benhouria, K Koua, W Tong, G Martin-Hardy, M Stamp, K Ganesan, LP Gauthier, M Besrour, A Ahnood, D John Garrett, S Roy, MR Ibbotson, S Prawer, R Fontaine

2025-01-01

Clinical trials previously demonstrated the notable capacity to elicit visual percepts in individuals with visual impairments caus..

Bi-modal system-on-chip platform for bilirubin monitoring by using photometric and temporal degradation approaches

JP Ndabakuranye, S Prawer, A Ahnood

2023-08-01

Hyperbilirubinemia in infants and cirrhosis in adults remain major global causes of sickness and death, predominantly for people l..

Photodegradation kinetics for bilirubin sensing: New solutions for old problems

JP Ndabakuranye, A Nadarajah, T Niyitanga, S Prawer, A Ahnood

2022-12-01

Blood bilirubin levels monitoring is essential for the management of liver disease and neonatal hyperbilirubinemia. Whilst highly ..

70 years of bilirubin sensing: Towards the point-of- care bilirubin monitoring in cirrhosis and hyperbilirubinemia

JP Ndabakuranye, S Li, G Burchall, K Fox, T Piva, Z Xu, O Kavehei, S Prawer, A Ahnood

2022-09-01

Bilirubin is clinically confirmed as a biomarker for liver health and has been utilized to implement the prognostic systems for ci..

A Novel Optical Assay System for Bilirubin Concentration Measurement in Whole Blood

JP Ndabakuranye, AE Rajapaksa, G Burchall, S Li, S Prawer, A Ahnood

2022-02-01

As a biomarker for liver disease, bilirubin has been utilized in prognostic scoring systems for cirrhosis. While laboratory-based ..

A System-on-Chip Assay for Bilirubin Levels Measurement in Whole Blood †

JP Ndabakuranye, S Prawer, A Ahnood

2021-01-01

Bilirubin (BR) is clinically confirmed as a biomarker for liver health and is used to assess the prognosis of cirrhosis. Optical a..

Improved wetting of gold active braze alloy on diamond for use in medical implants

K Edalati, M Stamp, K Ganesan, A Stacey, G Martin-Hardy, R Fontaine, S Prawer, DJ Garrett

2020-11-01

Medical implants containing active electronics must have a leak-proof encapsulation to be certified as safe for human use. Implant..

Laser Driven Miniature Diamond Implant for Wireless Retinal Prostheses

A Ahnood, R Cheriton, A Bruneau, JA Belcourt, JP Ndabakuranye, W Lemaire, R Hilkes, R Fontaine, JPD Cook, K Hinzer, S Prawer

2020-11-01

The design and benchtop operation of a wireless miniature epiretinal stimulator implant is reported. The implant is optically powe..

Near-infrared excitation of nitrogen-doped ultrananocrystalline diamond photoelectrodes in saline solution

Andre Chambers, Arman Ahnood, Samira Falahatdoost, Steve Yianni, David Hoxley, Brett C Johnson, David J Garrett, Snjezana Tomljenovic-Hanic, Steven Prawer

2020-03-01

Nitrogen-doped ultrananocrystalline diamond (N-UNCD) is a promising material for a variety of neural interfacing applications, due..

Miniature power and data transceiver based on multimodal operation of a single photovoltaic device

Arman Ahnood, Jean Pierre Ndabakuranye, Shiqiang Li, Omid Kavehei, Steven Prawer

2020-01-01

Wireless bi-directional data telemetry and power delivery are demonstrated using a single photovoltaic (PV) cell. The same cell fu..

Cooling of Miniature Electronic Systems Using Diamond Circuit Boards

NV Apollo, A Ahnood, H Zhan, K Ganesan, AJR Smith, S Prawer, DJ Garrett

2018-07-24

The drive for miniaturization of electronic systems has led to increases in spatial power density of electronic devices, making th..