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| Number | Title | Issue Date |
| 7995877 | Optical NAND gate An optical NAND gate is formed from two pair of optical waveguide devices on a substrate, with each pair of the optical waveguide devices consisting of an electroabsorption modulator and a photodetector. One pair of the optical waveguide devices is electrically conn... | 08/09/2011 |
| 7992309 | Micromachined cutting blade formed from {211}-oriented silicon A cutting blade is disclosed fabricated of micromachined silicon. The cutting blade utilizes a monocrystalline silicon substrate having a {211} crystalline orientation to form one or more cutting edges that are defined by the intersection of {211} crystalline planes... | 08/09/2011 |
| 7859350 | Microfabricated ion frequency standard A microfabricated ion frequency standard (i.e. an ion clock) is disclosed with a permanently-sealed vacuum package containing a source of ytterbium (Yb) ions and an octupole ion trap. The source of Yb ions is a micro-hotplate which generates Yb atoms which are then ... | 12/28/2010 |
| 7826065 | Tuned optical cavity magnetometer An atomic magnetometer is disclosed which utilizes an optical cavity formed from a grating and a mirror, with a vapor cell containing an alkali metal vapor located inside the optical cavity. Lasers are used to magnetically polarize the alkali metal vapor and to prob... | 11/02/2010 |
| 7825735 | Dual-range linearized transimpedance amplifier system A transimpedance amplifier system is disclosed which simultaneously generates a low-gain output signal and a high-gain output signal from an input current signal using a single transimpedance amplifier having two different feedback loops with different amplification... | 11/02/2010 |
| 7820970 | Fabrication of thermal microphotonic sensors and sensor arrays A thermal microphotonic sensor is fabricated on a silicon substrate by etching an opening and a trench into the substrate, and then filling in the opening and trench with silicon oxide which can be deposited or formed by thermally oxidizing a portion of the silicon ... | 10/26/2010 |
| 7790051 | Isolating and moving single atoms using silicon nanocrystals A method is disclosed for isolating single atoms of an atomic species of interest by locating the atoms within silicon nanocrystals. This can be done by implanting, on the average, a single atom of the atomic species of interest into each nanocrystal, and then measu... | 09/07/2010 |
| 7787719 | Optical data latch An optical data latch is formed on a substrate from a pair of optical logic gates in a cross-coupled arrangement in which optical waveguides are used to couple an output of each gate to an photodetector input of the other gate. This provides an optical bi-stability ... | 08/31/2010 |
| 7755079 | Strained-layer superlattice focal plane array having a planar structure An infrared focal plane array (FPA) is disclosed which utilizes a strained-layer superlattice (SLS) formed of alternating layers of InAs and InxGa1−xSb with 0≦x≦0.5 epitaxially grown on a GaSb substrate. The FPA avoids the use of a mesa s... | 07/13/2010 |
| 7728248 | Method for forming precision clockplate with pivot pins Methods are disclosed for producing a precision clockplate with rotational bearing surfaces (e.g. pivot pins). The methods comprise providing an electrically conductive blank, conventionally machining oversize features comprising bearing surfaces into the blank, opt... | 06/01/2010 |
| 7719318 | Nanoeletromechanical switch and logic circuits formed therefrom A nanoelectromechanical (NEM) switch is formed on a substrate with a source electrode containing a suspended electrically-conductive beam which is anchored to the substrate at each end. This beam, which can be formed of ruthenium, bows laterally in response to a vol... | 05/18/2010 |
| 7714240 | Microfabricated triggered vacuum switch A microfabricated vacuum switch is disclosed which includes a substrate upon which an anode, cathode and trigger electrode are located. A cover is sealed over the substrate under vacuum to complete the vacuum switch. In some embodiments of the present invention, a m... | 05/11/2010 |
| 7710232 | Microelectromechanical tunable inductor A microelectromechanical tunable inductor is formed from a pair of substantially-identically-sized coils arranged side by side and coiled up about a central axis which is parallel to a supporting substrate. An in-plane stress gradient is responsible for coiling up t... | 05/04/2010 |
| 7683310 | Laser warning receiver to identify the wavelength and angle of arrival of incident laser light A laser warning receiver is disclosed which has up to hundreds of individual optical channels each optically oriented to receive laser light from a different angle of arrival. Each optical channel has an optical wedge to define the angle of arrival, and a lens to fo... | 03/23/2010 |
| 7667200 | Thermal microphotonic sensor and sensor array A thermal microphotonic sensor is disclosed for detecting infrared radiation using heat generated by the infrared radiation to shift the resonant frequency of an optical resonator (e.g. a ring resonator) to which the heat is coupled. The shift in the resonant freque... | 02/23/2010 |
| 7652547 | Microelectromechanical resonator and method for fabrication A method is disclosed for the robust fabrication of a microelectromechanical (MEM) resonator. In this method, a pattern of holes is formed in the resonator mass with the position, size and number of holes in the pattern being optimized to minimize an uncertainty Δf... | 01/26/2010 |
| 7633362 | Eddy-current-damped microelectromechanical switch A microelectromechanical (MEM) device is disclosed that includes a shuttle suspended for movement above a substrate. A plurality of permanent magnets in the shuttle of the MEM device interact with a metal plate which forms the substrate or a metal portion thereof to... | 12/15/2009 |
| 7616850 | Wavelength-tunable optical ring resonators Optical ring resonator devices are disclosed that can be used for optical filtering, modulation or switching, or for use as photodetectors or sensors. These devices can be formed as microdisk ring resonators, or as open-ring resonators with an optical waveguide havi... | 11/10/2009 |
| 7616077 | Microelectromechanical resonator and method for fabrication A method is disclosed for the robust fabrication of a microelectromechanical (MEM) resonator. In this method, a pattern of holes is formed in the resonator mass with the position, size and number of holes in the pattern being optimized to minimize an uncertainty Δf... | 11/10/2009 |
| 7564387 | Optical analog-to-digital converter An optical analog-to-digital converter (ADC) is disclosed which converts an input optical analog signal to an output optical digital signal at a sampling rate defined by a sampling optical signal. Each bit of the digital representation is separately determined using... | 07/21/2009 |
| 7540469 | Microelectromechanical flow control apparatus A microelectromechanical (MEM) flow control apparatus is disclosed which includes a fluid channel formed on a substrate from a first layer of a nonconducting material (e.g. silicon nitride). A first electrode is provided on the first layer of the nonconducting mater... | 06/02/2009 |
| 7529016 | Extended-range tiltable micromirror A tiltable micromirror device is disclosed in which a micromirror is suspended by a progressive linkage with an electrostatic actuator (e.g. a vertical comb actuator or a capacitive plate electrostatic actuator) being located beneath the micromirror. The progressive... | 05/05/2009 |
| 7525325 | System and method for floating-substrate passive voltage contrast A passive voltage contrast (PVC) system and method are disclosed for analyzing ICs to locate defects and failure mechanisms. During analysis a device side of a semiconductor die containing the IC is maintained in an electrically-floating condition without any ground... | 04/28/2009 |
| 7421924 | Apparatus for raising or tilting a micromechanical structure An active hinge apparatus is disclosed which can be used to raise a micromechanical structure (e.g. a plate or micromirror) on a substrate. The active hinge apparatus utilizes one or more of teeth protruding outward from an axle which also supports the micromechanic... | 09/09/2008 |
| 7397301 | Pyroelectric demodulating detector A pyroelectric demodulating detector (also termed a pyroelectric demodulator) is disclosed which utilizes an electrical resistor stacked upon a pyroelectric element to demodulate an rf or microwave electrical input signal which is amplitude-modulated (AM). The pyroe... | 07/08/2008 |
| 7385334 | Contour mode resonators with acoustic reflectors A microelectromechanical (MEM) resonator is disclosed which has a linear or ring-shaped acoustic resonator suspended above a substrate by an acoustic reflector. The acoustic resonator can be formed with a piezoelectric material (e.g. aluminum nitride, zinc oxide or ... | 06/10/2008 |
| 7383774 | Microelectromechanical safing and arming apparatus A two-stage acceleration sensing apparatus is disclosed which has applications for use in a fuze assembly for a projected munition. The apparatus, which can be formed by bulk micromachining or LIGA, can sense acceleration components along two orthogonal directions t... | 06/10/2008 |
| 7355720 | Optical displacement sensor An optical displacement sensor is disclosed which uses a vertical-cavity surface-emitting laser (VCSEL) coupled to an optical cavity formed by a moveable membrane and an output mirror of the VCSEL. This arrangement renders the lasing characteristics of the VCSEL sen... | 04/08/2008 |
| 7339738 | Nanomechanical near-field grating apparatus and acceleration sensor formed therefrom A nanomechanical near-field grating device is disclosed which includes two sub-gratings vertically spaced by a distance less than or equal to an operating wavelength. Each sub-grating includes a plurality of line-elements spaced apart by a distance less than or equa... | 03/04/2008 |
| 7339454 | Tensile-stressed microelectromechanical apparatus and microelectromechanical relay formed therefrom A microelectromechanical (MEM) apparatus is disclosed which includes a shuttle suspended above a substrate by two or more sets of tensile-stressed beams which are operatively connected to the shuttle and which can comprise tungsten or a silicon nitride/polysilicon c... | 03/04/2008 |
| 7336855 | Integration of a waveguide self-electrooptic effect device and a vertically coupled interconnect waveguide A self-electrooptic effect device (“SEED”) is integrated with waveguide interconnects through the use of vertical directional couplers. Light initially propagating in the interconnect waveguide is vertically coupled to the active waveguide layer of the SEED and,... | 02/26/2008 |
| 7308317 | Micromachined electrode array An electrode array is disclosed which has applications for neural stimulation and sensing. The electrode array, in certain embodiments, can include a plurality of electrodes each of which is flexibly attached to a common substrate using a plurality of springs to all... | 12/11/2007 |
| 7300615 | High frequency transformers and high Q factor inductors formed using epoxy-based magnetic polymer materials An electrical component in the form of an inductor or transformer is disclosed which includes one or more coils and a magnetic polymer material located near the coils or supporting the coils to provide an electromagnetic interaction therewith. The magnetic polymer m... | 11/27/2007 |
| 7298010 | Radiation-hardened transistor and integrated circuit A composite transistor is disclosed for use in radiation hardening a CMOS IC formed on an SOI or bulk semiconductor substrate. The composite transistor has a circuit transistor and a blocking transistor connected in series with a common gate connection. A body termi... | 11/20/2007 |
| 7291003 | Micromachined spinneret A micromachined spinneret is disclosed which has one or more orifices through which a fiber-forming material can be extruded to form a fiber. Each orifice is surrounded by a concentric annular orifice which allows the fiber to be temporarily or permanently coated wi... | 11/06/2007 |
| 7289009 | Eddy-current-damped microelectromechanical switch A microelectromechanical (MEM) device is disclosed that includes a shuttle suspended for movement above a substrate. A plurality of permanent magnets in the shuttle of the MEM device interact with a metal plate which forms the substrate or a metal portion thereof to... | 10/30/2007 |
| 7274815 | Parallel phase-sensitive three-dimensional imaging camera An apparatus is disclosed for generating a three-dimensional (3-D) image of a scene illuminated by a pulsed light source (e.g. a laser or light-emitting diode). The apparatus, referred to as a phase-sensitive 3-D imaging camera utilizes a two-dimensional (2-D) array... | 09/25/2007 |
| 7236345 | Compact monolithic capacitive discharge unit A compact monolithic capacitive discharge unit (CDU) is disclosed in which a thyristor switch and a flyback charging circuit are both sandwiched about a ceramic energy storage capacitor. The result is a compact rugged assembly which provides a low-inductance current... | 06/26/2007 |
| 7218388 | VCSEL fault location apparatus and method An apparatus for locating a fault within an optical fiber is disclosed. The apparatus, which can be formed as a part of a fiber-optic transmitter or as a stand-alone instrument, utilizes a vertical-cavity surface-emitting laser (VCSEL) to generate a test pulse of li... | 05/15/2007 |
| 7207102 | Method for forming permanent magnets with different polarities for use in microelectromechanical devices Methods are provided for forming a plurality of permanent magnets with two different north-south magnetic pole alignments for use in microelectromechanical (MEM) devices. These methods are based on initially magnetizing the permanent magnets all in the same directio... | 04/24/2007 |
