publication . Article . Preprint . 2016

Suspended graphene variable capacitor

M. AbdelGhany; Farzaneh Mahvash; M. Mukhopadhyay; Alexandre Favron; Richard Martel; Mohamed Siaj; Thomas Szkopek;
Open Access
  • Published: 14 Apr 2016 Journal: 2D Materials, volume 3, page 41,005 (eissn: 2053-1583, Copyright policy)
  • Publisher: IOP Publishing
Abstract
Electromechanical variable capacitors, or varactors, find a wide range of applications including sensing applications and the tuning of electrical circuit resonance. We demonstrate a nano-electromechanical graphene varactor, a variable capacitor wherein the capacitance is tuned by voltage controlled deflection of a dense array of suspended graphene membranes. The low flexural rigidity of graphene monolayers is exploited to achieve low actuation voltage and high tunable capacitance density in an ultra-thin structure. Large arrays comprising thousands of suspensions were fabricated to give a tunable capacitance of over 10 pF mm−2. This capacitance density suggests...
Persistent Identifiers
Subjects
free text keywords: Mechanical Engineering, General Materials Science, Mechanics of Materials, General Chemistry, Condensed Matter Physics, Condensed Matter - Mesoscale and Nanoscale Physics, Varicap, Capacitor, law.invention, law, Monolayer, Capacitance, Variable capacitor, Microelectromechanical systems, Voltage, Graphene, Physics, Optoelectronics, business.industry, business, Nanotechnology
Funded by
NSERC
Project
  • Funder: Natural Sciences and Engineering Research Council of Canada (NSERC)
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