Dr. Walaa S. Gado Profile

Dr. Walaa S. Gado

at Egyptian Petroleum Research Institute

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

SPIE Journal Paper | 5 June 2019

H₂S MEMS-based gas sensor

Ahmad Elshenety, Elwy El-Kholy, Ahmed Abdou, Mostafa Soliman, Mohsen Elhagry, Walaa Gado

JM3, Vol. 18, Issue 02, 025001, (June 2019) https://doi.org/10.1117/12.10.1117/1.JMM.18.2.025001

KEYWORDS: Sensors, Polymers, Gas sensors, Polymeric sensors, Actuators, Microelectromechanical systems, Metals, Oxides, Resistance, Toxic gases

Read Abstract +

Background: Microelectromechanical systems are now one of the fastest growing engineering fields. We introduce a static gas sensor based on PolyMUMPs parallel plate actuators. The sensor exploits the pull-in phenomenon of the parallel plate actuators. The target gas is hydrogen sulfide (H2S), which is a toxic gas and popular in laboratories, factories, and petroleum industry. Aim: Reach a gas sensor in which the gas can easily be detected by a simple electronic circuit using new polymer combinations. Approach: Two concentrations of H2S (40 and 100 ppm) are used to test the ability of the sensor to capture the molecules of the gas. Gas injection process is done in a gas chamber and at ambient conditions (ambient temperature and pressure). Results: The two concentrations were successfully detected by the sensor and the electronic circuit verified the pull-in of the sensor. That was achieved using two different polymers (polypyrrole polymer and copper oxide–tin oxide/polypyrrole). Conclusions: The sensor successively detects H2S gas with 40 and 100 ppm concentrations. Verifying the pull-in of the sensor using a simple detection circuit could help in quickly moving those sensors from prototype to product.

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