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Micromachined wireless inductive sensor using flex circuits and hydrogels

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Seminar Details
Presenter Name: 
Vijayalakshmi Sridhar
Faculty Supervisor(s): 
Kenichi.Takahata
Date: 
Tuesday, July 15, 2008 - 1:30pm
Location: 
Kaiser 2020
Seminar Abstract: 

Hydogels are 3 dimensional cross linked structures that are capable of swelling and deswelling with the level of moisture around them. They can be characterized to swell to different biomedical parameters such glucose concentration, temperature, pH etc. This property has been utilized in a sensor consisting of varying planar dual coil (inductor) and a fixed capacitor fabricated on flexible circuit. The hydrogel is placed between the folded coils and as it swells, the mutual inductance between the coils changes. This change in inductance is sensed wirelessly as the change in the resonant frequency of the device. Wireless monitoring of a commercial wound dressing has been demonstrated with this device.

Presenter Biography: 

Vijayalakshmi Sridhar was born in Chennai, India in 1984. She completed her Bachelor’s in Electrical and Electronics Engineering, from Anna University in India by 2006 and joined University of British Columbia for her Master’s program with Dr Kenichi Takahata’s group. She is expected to complete by 2008.