Ms. Peijin Wu Profile

Peijin Wu

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 | 21 March 2023 Paper

Design of flexible mechanical sensor based on PDMS grating

Qiankai She, Peijin Wu, Weiqiang Lin, Yanwen Huang, Fenghua Wang, Zhicheng Ye

Proceedings Volume 12595, 125952B (2023) https://doi.org/10.1117/12.2669085

KEYWORDS: Polydimethylsiloxane, Waveguides, Optical gratings, Deformation, Sensors, Refractive index, Mechanical sensors, Finite-difference time-domain method, Design and modelling, Humidity

Read Abstract +

Grating devices are widely used in optical force or vibration sensing. However, conventional gratings made of rigid materials have small strain which only arises little change of the resonance wavelengths by force, furthermore the resonant wavelengths are susceptible to temperature and humidity, thus accurate perception of pressure is hard and complicated. In this work, we designed and fabricated a flexible and stretchable PDMS-TiO2-PDMS grating waveguide type pressure sensor where the sensing mechanism is based on waveguide resonance, meaning the resonant wavelengths are shifted linearly with the change of grating pitch and are rarely affected by temperature and humidity. Finite element analysis (COMSOL Multiphysics) is used to simulate the dynamic deformation of the grating structure under stress or tension, and the spectral changes of the gratings under above mechanical conditions are simulated by using Finite Difference Time Domain (FDTD) simulation. We found that the wavelengths of waveguide resonance are in good linearity to the changing of grating period and is insensitive to the grating height and line width. The proposed flexible grating device provides a new sensing method for optical sensors, which can be practically applied in various circumstances including strong electromagnetic interference and high variation of temperature or humidity.

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