A Carbon Nanotube-based NEMS Parametric Amplifier for Enhanced Radio Wave Detection and Electronic Signal Amplification

Abstract

We propose a scheme for a parametric amplifier based on a single suspended carbon nanotube field-emitter. This novel electromechanical nanotube device acts as a phase-sensitive, variable-gain, band-pass-filtering amplifier for electronic signal processing and, at the same time, can operate as a variable-sensitivity, tuneable detector and transducer of radio frequency electromagnetic waves. The amplifier can exhibit infinite gain at pumping voltages much less than 10 Volts. Additionally, the amplifier's low overhead power consumption (10-1000 nW) make it exceptionally attractive for ultra-low-power applications.

Driving and Controlling Molecular Surface Rotors with a Terahertz Electric Field

“…Inspired by the Lorentz model for a bound electron in an oscillating field and by the behavior of a parametric oscillator, , we search for a theoretical description of the observed features of the induced net rotation in the simulations by cobbling together a linear out-of-phase response function at the characteristic frequency and an in-phase response function at twice the characteristic frequency, J = J max { τ − 1 false( ω − ω 0 false) 1 + [ 2 τ − 1 false( ω − ω 0 false) ] 2 + 1 1 + [ 2 τ − 1 false( ω − 2 ω 0 false) ] 2 } Rather amazingly this theory describes the frequency dependence of the net rotation quite well, as shown in Figure C. The response at the characteristic frequency arises from a direct driving of the phase (the equilibrium position in a harmonic approximation, Figure B), while the response at twice the characteristic frequency arises from parametric modulation of the amplitude (the spring constant in a harmonic approximation, Figure B).…”

Cyclic steady states of nonlinear electro-mechanical devices excited at resonance

“…Our first example deals with a carbon nanotube that is excited by an external electrical field. As discussed in , carbon nanotubes possess very unique and promising characteristics for use as NEMS resonators . In this study, we suppose that the carbon nanotube is a conductor.…”

“…As discussed in [31], carbon nanotubes possess very unique and promising characteristics for use as NEMS resonators [2,[52][53][54][55]. In this study, we suppose that the carbon nanotube is a conductor.…”

Carbon Nanotube-Based Nanomechanical Sensor: Theoretical Analysis of Mechanical and Vibrational Properties

“…CNTs are the smallest scale nanomaterials that can be observed only by a transmission electron microscope (TEM). The excellent structural characteristics and the mechanical and physical properties make CNTs potential candidates for the next generation of nanoelectromechanical systems (NEMS) [11][12][13][14][15].…”