A Carbon Nanotube Field Effect Transistor with a Suspended Nanotube Gate

Abstract

We investigate theoretically field effect transistors based on single-walled carbon nanotubes (CNTFET) and explore two device geometries with suspended multiwalled carbon nanotubes (MWNT) functioning as gate electrodes. In the two geometries, a doubly or singly clamped MWNT is electrostatically deflected toward the transistor channel, allowing for a variable gate coupling and leading to, for instance, a superior subthreshold slope. We suggest that the proposed designs can be used as nanoelectromechanical switches and as detectors of mechanical motion on the nanoscale.

Clinical research networks in diabetes: the evolving role of the research nurse

“…In addition, a small pattern or material change in an RF microstrip causes large changes in RF characteristics,99 when compared to other than CNT materials (e.g., inorganic semiconductors and conducting polymers). On the other hand, CNT‐based nanoelectromechanical systems (NEMS) have been discussed theoretically and demonstrated experimentally,3, 4 including lipid bilayers bioNEMS that mimic a cell membrane 100. Integrated carbon nanopipettes with nanoscale dimensions have also been developed that can probe cells with minimal intrusion, inject fluids into the cells, and concurrently carry out electrical measurements 101.…”

“…Carbon nanotubes (CNTs) exhibit a unique combination of biological and physical properties 1–3. These properties make CNT‐based devices, especially CNT field‐effect transistors (FETs),3, 4 promising as a novel platform for chemical sensors,5 biosensors,6–8 and biochips 9–11. The last ones seem to be especially promising for clinical diagnostics 12.…”

p H -dependent conductance behaviors of layer-by-layer self-assembled carboxylated carbon nanotube multilayer thin-film sensors

“…Due to the dual electronic properties, semiconducting or metallic relying on the chirality and diameter, 1 CNTs are specifically applicable to nanoelectronic devices, where semiconducting and metallic CNTs play roles of channel material and conductive interconnect, respectively. 6 Another mainstream of CNT applications includes chemical and biological sensors to take advantage of the sensitive electrochemical reaction in surface atoms or functional blocks along with chemical stability as aforementioned. 5 In conjunction with the mechanical property, CNTs have been used as building blocks in the nanoelectromechanical switch and detector for nanoscale motion.…”

Continuum Elastic Modeling of Graphene Resonators

“…For modeling NEMS a reliable and efficient description of the mechanical response of nanocarbons to external forces is essential [8,9]. While continuum elasticity theory has been applied succesfully to the study of mechanical properties of nanotubes for a long time, [10,11,12] it has only recently been applied to graphene membranes [13,14,15,16].…”