Tamoghna Saha

I am currently a Postdoctoral Scholar at University of California, San Diego working with Prof. Joseph Wang on wearable sensors. Previously I was a PhD student in the Department of Chemical and Biomolecular Engineering at North Carolina State University working under Dr. Orlin Velev, Dr. Michael Dickey and Dr. Michael Daniele. My main area of research lied in developing a non-invasive, long term, self powered, osmotically driven wearable paper microfluidic sweat sampling platform that can function under low sweating conditions without requirement of any active perspiration. Our technology can also be combined with microneedles for ISF (interstitial fluid) sampling and glucose analysis. This research was funded by ASSIST (Advanced Self-Powered Systems of Integrated Sensors and Technologies) , which is a National Science Foundation sponsored Nanosystems Engineering Research Center (NERC) center at NC State since 2012. Website: https://joewang.ucsd.edu/ https://assist.ncsu.edu Previously, I have worked in the field of microfluidics at IIT(ISM) Dhanbad, India under Dr. Soubhik Kumar Bhaumik, where my main area of research resided in studying different flow parameters (eg: Slip Length, drag reduction, axial dispersion) of liquid ( Newtonian and Non-newtonian) through superhydrophobic packed and unpacked channels. Follow my research: Google Scholar : https://scholar.google.co.in/citations?user=-RgV9CsAAAAJ&hl=en&authuser=2 Research Gate: https://www.researchgate.net/profile/Tamoghna_Saha4

Works (8)

Updated: January 22nd, 2024 08:12

2022 article

Wireless Wearable Electrochemical Sensing Platform with Zero- Power Osmotic Sweat Extraction for Continuous Lactate Monitoring

Saha, T., Songkakul, T., Knisely, C. T., Yokus, M. A., Daniele, M. A., Dickey, M. D., … Velev, O. D. (2022, July 12). ACS SENSORS, Vol. 7.

By: T. Saha n , T. Songkakul n , C. Knisely n, M. Yokus n, M. Daniele n, M. Dickey n , A. Bozkurt n, O. Velev n 

author keywords: paper microfluidics; sweat; wearable device; electrochemical sensor; lactate; osmotic pumping; hydrogel
MeSH headings : Humans; Lactic Acid / analysis; Monitoring, Physiologic; Osmosis; Sweat / chemistry; Wearable Electronic Devices
TL;DR: A wearable system combining a hydrogel for osmotic sweat extraction, with a paper microfluidic channel for facilitating sweat transport and management, a screen-printed electrochemical lactate sensor, and a custom-built wireless wearable potentiostat system holds the potential of providing comprehensive and long-term continuous analysis of sweat lactate trends in the human body during rest and under exercising conditions. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, ORCID
Added: July 13, 2022

2021 article

A Wearable Patch for Prolonged Sweat Lactate Harvesting and Sensing

2021 43RD ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE & BIOLOGY SOCIETY (EMBC), pp. 6863–6866.

By: T. Saha n , J. Fang n, M. Yokus n, S. Mukherjee n, A. Bozkurt n, M. Daniele n, M. Dickey n , O. Velev n 

MeSH headings : Humans; Hydrogels; Lactic Acid; Sweat; Sweating; Wearable Electronic Devices
TL;DR: The on-skin performance of a non-invasive wearable sweat sampling patch that can harvest sweat at rest, during exercise, and post-exercise is reported, which can potentially provide useful information about the human metabolic activity. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: April 25, 2022

2021 journal article

Osmotically Enabled Wearable Patch for Sweat Harvesting and Lactate Quantification

MICROMACHINES, 12(12).

By: T. Saha n , J. Fang n, S. Mukherjee n, C. Knisely n, M. Dickey n  & O. Velev n 

author keywords: paper microfluidics; sweat; sensing; hydrogels; lactate; osmotic pumping; evaporation; capillary; wicking; biochemical assay
TL;DR: The measurements show the that the total number of moles of lactate in sweat is correlated to sweat rate, and sweat appears to be a suitable biofluid for lactate quantification. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: ORCID, Web Of Science, NC State University Libraries
Added: December 6, 2021

2021 journal article

Wearable Osmotic-Capillary Patch for Prolonged Sweat Harvesting and Sensing

ACS APPLIED MATERIALS & INTERFACES, 13(7), 8071–8081.

By: T. Saha n , J. Fang n, S. Mukherjee n, M. Dickey n  & O. Velev n 

author keywords: sweat bioassay; paper microfluidics; hydrogels; osmotic pumping; lactate
MeSH headings : Biomarkers / analysis; Biosensing Techniques; Humans; Hydrogels / chemistry; Microfluidic Analytical Techniques; Osmotic Pressure; Paper; Skin / chemistry; Sweat / chemistry; Wearable Electronic Devices
TL;DR: In vitro and in vivo sampling of sweat through osmosis via the use of a hydrogel interfaced with the skin, without need for active perspiration is analyzed to highlight that lactate in sweat increases with exercise and as a direct result of muscle activity. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID, NC State University Libraries
Added: February 16, 2021

2020 journal article

Principles of long-term fluids handling in paper-based wearables with capillary-evaporative transport.

Biomicrofluidics.

By: T. Shay n, T. Saha n , M. Dickey n  & O. Velev  n

TL;DR: It is pointed out that non-invasive osmotic extraction combined with paper microfluidics and evaporative disposal can enable sweat collection and monitoring for durations longer than 10 days and the salt film deposited at the evaporation pad will preserve a record of analytes that may be used for long-term biomarker monitoring in sweat. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: ORCID
Added: June 10, 2020

2020 conference paper

Towards Wearable Electrochemical Lactate Sensing using Osmotic-Capillary Microfluidic Pumping

2019 IEEE SENSORS, 2019-October.

By: M. Yokus n, T. Saha n , J. Fang n, M. Dickey  n, O. Velev  n & M. Daniele  n

Contributors: M. Yokus n, T. Saha n , J. Fang n, M. Dickey  n, O. Velev  n & M. Daniele  n

UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: ORCID
Added: April 8, 2021

2017 journal article

Slip-enhanced flow through thin packed column with superhydrophobic wall

Sensors and Actuators, B: Chemical, 240, 468–476.

By: T. Saha* , S. Kumar * & S. Bhaumik *

Contributors: T. Saha* , S. Kumar * & S. Bhaumik *

author keywords: Chromatography; Thin packed column; Superhydrophobic wall; Slip length; Friction factor
Source: ORCID
Added: April 8, 2021

2016 journal article

Minimizing axial dispersion in narrow packed column using superhydrophobic wall

Korean Journal of Chemical Engineering, 33(12), 3337–3342.

By: T. Saha* , S. Kumar * & S. Bhaumik *

Contributors: T. Saha* , S. Kumar * & S. Bhaumik *

author keywords: Axial Dispersion; Narrow Packed Column; Superhydrophobic Wall; Residence Time Distribution; Slip
Source: ORCID
Added: April 8, 2021

Employment

Updated: April 18th, 2023 13:22

2022 - present

University of California, San Diego San Diego, California, US
Postdoc Scholar Nanoengineering

Education

Updated: April 18th, 2023 13:44

2017 - 2022

NC State University Raleigh, NC, US
Ph.D Chemical and Biomolecular Engineering

2014 - 2016

Indian Institute of Technology Dhanbad, Jharkhand, IN
Master of technology (M.Tech) Chemical Engineering

2010 - 2014

SRM University Chennai, Tamil Nadu, IN
Bachelor of Technology (B.Tech) Chemical Engineering

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