Dr. Chandra Sourov Profile

Dr. Chandra Sourov

at Aalto Univ

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 13 March 2024 Presentation + Paper

Cellulose optical fiber for human health monitoring

Ari Hokkanen, Markku Kapulainen, Aayush Kumar Jaiswal, Anniina Savolainen, Sourov Chandra, Minna Makki, Olli Ikkala, Hannes Orelma

Proceedings Volume 12835, 128350O (2024) https://doi.org/10.1117/12.3002236

KEYWORDS: Cellulose, Signal attenuation, Sensors, Optical fibers, Optical sensing

Read Abstract +

Cellulose, as a fully renewable, biodegradable, and biocompatible material, creates new possibilities for optical fiber (OF) sensor applications. Cellulose OFs are highly hygroscopic, exhibiting rapid wetting and drying properties with water and moisture, easily functionalized, and can be either made water-resistant or water-soluble. These fibers are not aimed towards replacing the existing glass or polymer OFs in telecommunication or in current sensing applications, rather cellulose OF sensors can open new application areas where the reactive materials are required. For example, compared to glass or polymer OFs, cellulose OFs are porous and allow liquid transport in and out of the fiber. Moreover, the cellulose waveguide material itself can be chemically functionalized. Such cellulose OFs fit well with human health monitoring where the new possibilities that cellulose offers can be utilized. Here we demonstrate a face mask that contains regenerated cellulose (RC) OF with a 1.8 dB/cm attenuation constant for respiratory rate monitoring. RC is a class of man-made cellulose materials that includes commonly materials like rayon textiles and cellophane films. The cellulose fiber inside the face mask rapidly absorbs moist and dries between each breath, which causes a periodic change in optical power transmitted through the fiber. A face mask does not prevent fast drying of the fiber. Such RC fiber fits well to respiratory rate monitoring because it exhibits good mechanical performance in both dry and wet states. Cellulose OF length was about 5 cm long with a loop-type sensor structure. Measured respiratory rates varied between 16-54 breaths per minute.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

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

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years