ColorX: fitness tracker-based colorimetric sensor for biochemical applications

Ganga Chinna Rao Devarapu; Venkata Vamsi Bharadwaj Yallapragada; Fay ní Chlochasaigh; Uday Gowda; Adarsh Ananthachar; Liam O'Faolain

doi:10.1117/12.2568853

22 August 2020 ColorX: fitness tracker-based colorimetric sensor for biochemical applications

Ganga Chinna Rao Devarapu, Venkata Vamsi Bharadwaj Yallapragada, Fay ní Chlochasaigh, Uday Gowda, Adarsh Ananthachar, Liam O'Faolain

Author Affiliations +

Proceedings Volume 11475, Organic and Hybrid Sensors and Bioelectronics XIII; 114751A (2020) https://doi.org/10.1117/12.2568853
Event: SPIE Organic Photonics + Electronics, 2020, Online Only

Conference Poster

Abstract

Colorimetric sensors are ubiquitous tools that are deployed in various research, academic and on-field diagnostic settings. High accuracy and quick readout capability of these sensors are key for biochemical sensing and medical diagnostics. In this article, we introduce ColorX, a novel colorimetric sensor built by modifying a genetic commercially available fitness tracker. The inbuilt components of a fitness tracker such as a heart-rate sensor, LEDs, photodiodes, transimpedance amplifiers provide a compact and portable form factor. ColorX leverages the bluetooth from the fitness tracker for wireless data transmission to smart phones. As a device validation strategy, ColorX was validated by measuring Nitrates in water. In all our experiments ColorX matched the technical performance of a standard benchspectrophotometer. ColorX was able to achieve excellent sensitivity in measuring nitrates as low as 10mg/ml.

Conference Presentation

Citation Download Citation

Ganga Chinna Rao Devarapu, Venkata Vamsi Bharadwaj Yallapragada, Fay ní Chlochasaigh, Uday Gowda, Adarsh Ananthachar, and Liam O'Faolain "ColorX: fitness tracker-based colorimetric sensor for biochemical applications", Proc. SPIE 11475, Organic and Hybrid Sensors and Bioelectronics XIII, 114751A (22 August 2020); https://doi.org/10.1117/12.2568853

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available