Tunable feedback resonator based on a nematic liquid crystal cell as variable capacitance

2007 ◽  
Author(s):  
C. Marcos ◽  
J. C. Torres ◽  
J. M. S. Pena ◽  
I. Pérez ◽  
C. Vázquez
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Liquid Crystal Cell ◽  
Crystal Cell ◽  
Variable Capacitance

scholarly journals Note: Series and parallel tunable resonators based on a nematic liquid crystal cell as variable capacitance

2012 ◽  
Vol 83 (8) ◽  
pp. 086104 ◽  
Author(s):  
Juan C. Torres ◽  
Carlos Marcos ◽  
José M. Sánchez-Pena ◽  
Isabel Pérez ◽  
Virginia Urruchi
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Liquid Crystal Cell ◽  
Crystal Cell ◽  
Variable Capacitance ◽  
Tunable Resonators

scholarly journals Spectral method for fast measurement of twisted nematic liquid crystal cell parameters

2014 ◽  
Vol 53 (23) ◽  
pp. 5230
Author(s):  
Plinio Jesús Pinzón ◽  
Isabel Pérez ◽  
José Manuel Sánchez-Pena ◽  
Carmen Vázquez
Keyword(s):  
Liquid Crystal ◽  
Spectral Method ◽  
Nematic Liquid Crystal ◽  
Liquid Crystal Cell ◽  
Fast Measurement ◽  
Cell Parameters ◽  
Crystal Cell ◽  
Twisted Nematic ◽  
Twisted Nematic Liquid Crystal

scholarly journals Wireless Temperature Sensor Based on a Nematic Liquid Crystal Cell as Variable Capacitance

Sensors ◽  
2018 ◽  
Vol 18 (10) ◽  
pp. 3436 ◽  
Author(s):  
Juan Torres ◽  
Braulio García-Cámara ◽  
Isabel Pérez ◽  
Virginia Urruchi ◽  
José Sánchez-Pena
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Temperature Sensor ◽  
Liquid Crystal Cell ◽  
Smart Sensors ◽  
The Internet ◽  
Proof Of Concept ◽  
Biomedical Sensors ◽  
Variable Capacitance ◽  
The Internet Of Things

Wireless communication is growing quickly and now allows technologies like the Internet of Things (IoT). It is included in many smart sensors helping to reduce the installation and system costs. These sensors increase flexibility, simplify deployment and address a new set of applications that was previously impossible with a wired approach. In this work, a wireless temperature sensor based on a nematic liquid crystal as variable capacitance is proposed as a proof of concept for potential wearable applications. Performance analysis of the wireless temperature sensor has been carried out and a simple equivalent circuit has been proposed. Sensor prototype has been successfully fabricated and demonstrated as the beginning of new biomedical sensors.

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