publication . Article . Preprint . 2016

Suspended graphene variable capacitor

AbdelGhany, M.; Mahvash, F.; Mukhopadhyay, M.; Favron, A.; Martel, R.; Siaj, M.; Szkopek, T.;
Open Access
  • Published: 14 Oct 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...
Subjects
free text keywords: Mechanical Engineering, General Materials Science, Mechanics of Materials, General Chemistry, Condensed Matter Physics, Optoelectronics, business.industry, business, Variable capacitor, Graphene, law.invention, law, Nanotechnology, Physics, Microelectromechanical systems, Monolayer, Varicap, Voltage, Capacitance, Capacitor, Condensed Matter - Mesoscale and Nanoscale Physics
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publication . Article . Preprint . 2016

Suspended graphene variable capacitor

AbdelGhany, M.; Mahvash, F.; Mukhopadhyay, M.; Favron, A.; Martel, R.; Siaj, M.; Szkopek, T.;