摘要:
NEMS (Nano-Electro-Mechanical Systems) apparatuses are described. By applying a static electric field, an arm or beam in a NEMS apparatus is made to bend so that one electrical conductor is made to contact another electrical conductor, thereby closing the NEMS apparatus. Some apparatus embodiments make use of electrostatic coupling to cause the arm or beam to bend, and some apparatus embodiments make use of piezoelectric materials to cause the arm or beam to bend. Other embodiments are described and claimed.
摘要:
NEMS (Nano-Electro-Mechanical Systems) apparatuses are described. By applying a static electric field, an arm or beam in a NEMS apparatus is made to bend so that one electrical conductor is made to contact another electrical conductor, thereby closing the NEMS apparatus. Some apparatus embodiments make use of electrostatic coupling to cause the arm or beam to bend, and some apparatus embodiments make use of piezoelectric materials to cause the arm or beam to bend. Other embodiments are described and claimed.
摘要:
Systems and methods for thermally actuating piezoresistive cantilevers are described. One embodiment includes a nanoelectromechanical resonator connected in at least one location to a substrate, an electrically conductive path formed on the resonator and a signal source connected to the electrically conductive path and configured to provide an oscillating actuation signal capable of exciting a resonant mode in the resonator.
摘要:
A self-sustaining ultra-high frequency oscillator and method enable the ability to oscillate and output a signal. A balanced bridge circuit is utilized to null an embedding background response. A first vibrating nanoelectromechanical (NEMS) beam resonator is part of one of the branches of the balanced bridge circuit and determines the frequency of the oscillator's output signal. A feedback loop establishes and sets oscillation conditions of the oscillator's signal. Further, the feedback loop connects an output of the first resonator to an input of the balanced bridge circuit.
摘要:
A microfluidic embedded nanoelectromechanical system (NEMs) force sensor provides an electrical readout. The force sensor contains a deformable member that is integrated with a strain sensor. The strain sensor converts a deformation of the deformable member into an electrical signal. A microfluidic channel encapsulates the force sensor, controls a fluidic environment around the force sensor, and improves the read out. In addition, a microfluidic embedded vacuum insulated biocalorimeter is provided. A calorimeter chamber contains a parylene membrane. Both sides of the chamber are under vacuum during measurement of a sample. A microfluidic cannel (built from parylene) is used to deliver a sample to the chamber. A thermopile, used as a thermometer is located between two layers of parylene.
摘要:
A method of screening one or more cells is described; the method includes: (i) providing one or more cells to a nanoelectromechanical system (NEMS) force sensor; (ii) applying at least one reagent to the one or more cells; and (iii) observing a response of the one or more cells to the reagent with the force sensor, thereby screening the one or more cells.
摘要:
An apparatus, system, device, and method provide the ability to measure forces a cell exerts on its surroundings. A platform is suspended across an opening using support legs. The platform is able to move horizontally in a plane of the opening. A piezoresistive strain sensor is integrated into the platform and measures strain induced in the support legs when the platform moves horizontally thereby measuring displacement of the platform.
摘要:
A parametric feedback oscillator includes a resonator which has at least one transduction element and at least one electromechanical resonating element. The resonator is configured to accept as input a parametric excitation signal at a frequency 2ω0 and to provide a resonating output signal at a frequency ω0. A cascaded feedback path in any electrically coupled cascade order includes at least one non-linear element, at least one phase shifter electrically, and at least one amplifier. The cascade feedback path is configured to receive as input the resonating output signal at a frequency ω0 and configured to provide as output a feedback path signal as the parametric excitation signal at a frequency 2ω0 to the resonator. A parametric feedback oscillator output terminal is configured to provide the resonating output signal at the frequency ω0 as an output signal. A method of causing a parametric feedback oscillation is also described.
摘要:
Microcalorimeters having low addendum heat capacities and attojoule/Kscale resolutions are provided. These microcalorimeters make use of very small calorimeter bodies composed of materials with very low heat capacities. Also provided are polymer-based microcalorimeters with thermally isolated reagent chambers. These microcalorimeters use a multi-layered polymer membrane structure to provide improved thermal isolation of a reagent chamber.
摘要:
The invention provides lateral nanoelectromechanical switches useful for integration into circuitry fabricated using standard semiconductor processing methods, or using techniques compatible with the mainstream semiconductor processing technologies. Methods of fabricating the switches are described. Some exemplary designs for two and three terminal switches are provided. Descriptions of structural features and the operating parameters for some exemplary switches are given. The switches are expected to be compatible with circuitry that is operable in computer-based systems.