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Electromechanical Resonators from Graphene Sheets
The thinnest resonator consists of a single suspended layer of atoms and represents the ultimate limit of two-dimensional nanoelectromechanical systems and is demonstrated down to 8 × 10–4 electrons per root hertz.
Impermeable atomic membranes from graphene sheets.
This pressurized graphene membrane is the world's thinnest balloon and provides a unique separation barrier between 2 distinct regions that is only one atom thick.
Large-scale arrays of single-layer graphene resonators.
These measurements show that it is possible to produce large arrays of CVD-grown graphene resonators with reproducible properties and the same excellent electrical and mechanical properties previously reported for exfoliated graphene.
High quality factor resonance at room temperature with nanostrings under high tensile stress
Quality factors as high as 207 000 are demonstrated at room temperature for radio-frequency silicon nitride string resonators with cross sectional dimensions on the scale of 100nm, made with a
Free-standing epitaxial graphene.
Raman spectroscopy suggests that the graphene is not chemically modified during the release of the devices, demonstrating that the technique is a robust means of fabricating large-area suspended graphene structures.
Parametric amplification in a torsional microresonator
We observe parametric amplification in a torsional micron-scale mechanical resonator. An applied voltage is used to make a dynamic change to the torsional spring constant. Oscillating the spring
Measurement of mechanical resonance and losses in nanometer scale silicon wires
We present data on nanofabricated suspended silicon wires driven at resonance. The wires are electrostatically driven and detected optically. We have observed wires with widths as small as 45 nm and
Macroscopic tuning of nanomechanics: substrate bending for reversible control of frequency and quality factor of nanostring resonators.
Tensile stress is shown to increase the quality factor of both silicon nitride and single-crystal silicon resonators, implying that added tension can be used as a general, material-independent route to increased quality factor.
High, size-dependent quality factor in an array of graphene mechanical resonators.
These measurements shed light on the mechanisms behind dissipation in monolayer graphene resonators and demonstrate that the quality factor of graphene resonator relative to their thickness is among the highest of any mechanical resonator demonstrated to date.
Photothermal self-oscillation and laser cooling of graphene optomechanical systems.
Photothermal back-action in a graphene mechanical resonator comprising one end of a Fabry-Perot cavity is demonstrated and a continuous wave laser can be used to cool a graphene vibrational mode or to power a graphene-based tunable frequency oscillator.