Patents by Inventor Carlos H. Mastrangelo
Carlos H. Mastrangelo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11408846Abstract: A capacitive vapor sensor, sensor system, and method for determining a vapor concentration is provided. The capacitive sensor includes a first electrode and a second electrode. The first and second electrodes are configured to provide a bias voltage. The sensor further includes a cantilevered sensor electrode interdigitated between the first and second electrodes and having an adsorptive polymer attached to a surface of the cantilevered sensor electrode. The adsorptive polymer is configured to expand in response to adsorbing a vapor and cause a deflection of the cantilevered sensor electrode, the deflection causing a change in a differential capacitance of the first and second electrodes. A sensor indicates current at the cantilevered sensor electrode, and an electronic processor determines the change in the differential capacitance to determine a characteristic or concentration of the vapor.Type: GrantFiled: October 30, 2017Date of Patent: August 9, 2022Assignee: UNIVERSITY OF UTAH RESEARCH FOUNDATIONInventors: Carlos H. Mastrangelo, Hanseup Kim, Rugved Likhite
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Publication number: 20200224784Abstract: A tension driven actuator (100) comprises a support structure (102) formed of a peripheral bounded wall (118) at least partially defining a fluid chamber (112), and a first elastic diaphragm (116) attached, under tension, to the support structure (102) and enclosing the fluid chamber (112) with the support structure (102). A pressurized fluid (110) is disposed in the fluid chamber (112), and a tension modifier structure (108) is attached to the first elastic diaphragm (116), and is under tension with the first elastic diaphragm (1 16). In response to application of an electrical field to the tension modifier structure (108), the tension modifier structure (108) transitions from a diaphragm tension position to a diaphragm relaxed position, such that the tension modifier structure (108) deforms and contracts in size, thereby reducing tension of the first elastic diaphragm (116) such that fluid pressure causes deflection of a portion of the first elastic diaphragm (116).Type: ApplicationFiled: July 9, 2018Publication date: July 16, 2020Inventors: Nazmul Hasan, Fariha Khan, Shashank Pandey, Aishwaryadev Banerjee, Hanseup Kim, Carlos H. Mastrangelo
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Publication number: 20190227019Abstract: A capacitive vapor sensor, sensor system, and method for determining a vapor concentration is provided. The capacitive sensor includes a first electrode and a second electrode. The first and second electrodes are configured to provide a bias voltage. The sensor further includes a cantilevered sensor electrode interdigitated between the first and second electrodes and having an adsorptive polymer attached to a surface of the cantilevered sensor electrode. The adsorptive polymer is configured to expand in response to adsorbing a vapor and cause a deflection of the cantilevered sensor electrode, the deflection causing a change in a differential capacitance of the first and second electrodes. A sensor indicates current at the cantilevered sensor electrode, and an electronic processor determines the change in the differential capacitance to determine a characteristic or concentration of the vapor.Type: ApplicationFiled: October 30, 2017Publication date: July 25, 2019Inventors: Carlos H. MASTRANGELO, Hanseup KIM, Rugved LIKHITE
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Patent number: 9599524Abstract: A flexible tactile imager includes an array of sensing cells that measure shear force and normal force. The sensing cells include a first sub-cell and a second sub-cell. Each sub-cell includes multi-fingered capacitors configured to measure shear force in a first or second direction and to measure the normal force. The multi-fingered capacitors include a flexible printed circuit board, a comb-like fingered sense electrode and drive electrode patterned on a layer of the flexible printed circuit board, a deformable dielectric material positioned above the comb-like fingered sense and drive electrodes, the comb-like fingered floating electrode patterned above the deformable dielectric material, a first capacitance formed between the comb-like fingered sense electrode and the comb-like fingered floating electrode, and a second capacitance formed between the comb-like fingered drive electrode and the comb-like fingered floating electrode.Type: GrantFiled: April 4, 2014Date of Patent: March 21, 2017Assignee: University of Utah Research FoundationInventors: Rajesh Surapaneni, Carlos H. Mastrangelo
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Publication number: 20140298921Abstract: A flexible tactile imager includes an array of sensing cells that measure shear force and normal force. The sensing cells include a first sub-cell and a second sub-cell. Each sub-cell includes multi-fingered capacitors configured to measure shear force in a first or second direction and to measure the normal force. The multi-fingered capacitors include a flexible printed circuit board, a comb-like fingered sense electrode and drive electrode patterned on a layer of the flexible printed circuit board, a deformable dielectric material positioned above the comb-like fingered sense and drive electrodes, the comb-like fingered floating electrode patterned above the deformable dielectric material, a first capacitance formed between the comb-like fingered sense electrode and the comb-like fingered floating electrode, and a second capacitance formed between the comb-like fingered drive electrode and the comb-like fingered floating electrode.Type: ApplicationFiled: April 4, 2014Publication date: October 9, 2014Applicant: University of UtahInventors: Rajesh Surapaneni, Carlos H. Mastrangelo
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Patent number: 8694249Abstract: Embodiments are directed to a ground reaction sensor cluster (GRSC) and to methods for precisely determining zero velocity points and bearing changes using a GRSC and for navigating using a GRSC and an inertial motion unit (IMU) in a global positioning satellite (GPS)-denied environment. The GRSC device itself includes an array of capacitive pressure and shear sensors. The array includes multiple flexible capacitive sensor cells that detect changes in capacitance in response to a footstep. Each cell of the array includes multiple overlapping, fingered capacitors that detect pressure and shear force by determining the change in capacitance in each fingered capacitor. The GRSC device also includes a multiplexing receiver that receives the capacitance inputs from each of the capacitive sensor cells. The multiplexing receiver and other electronic elements further process the received capacitance inputs to determine, based on the pressure and shear forces, the direction and bearing of the footstep.Type: GrantFiled: July 27, 2011Date of Patent: April 8, 2014Assignee: The University of Utah Research FoundationInventors: Carlos H. Mastrangelo, Rajesh Surapaneni
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Publication number: 20130196343Abstract: A biosensor can include a fluid flow channel (12), a pulsing mechanism (14), and a binding response measurement mechanism (16). The fluid flow channel (12) can include an inlet (18) to accept a fluid into the fluid flow channel and an outlet (20). At least one binding sensor surface (22) can be oriented within the fluid flow channel. The binding sensor surface (22) can include a fixed binding moiety on the binding sensor surface selected to bind with a complimentary target agent within the fluid to form a complimentary bound duplex. The pulsing and flow switching mechanism (14) can be configured to drive the fluid into the fluid flow channel (12) in a pulsed analyte flow.Type: ApplicationFiled: March 31, 2011Publication date: August 1, 2013Inventors: Carlos H. Mastrangelo, Layne Daryl Williams
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Publication number: 20120255932Abstract: A nanofabrication device in an example includes a conducting nanotip and a gas microchannel adjacent to the nanotip and configured to deliver a gas to the nanotip. The nanofabrication device can be used for controlled and localized etching and/or deposition of material from a substrate.Type: ApplicationFiled: September 29, 2011Publication date: October 11, 2012Inventors: Massood Tabib-Azar, Carlos H. Mastrangelo
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Publication number: 20120029819Abstract: Embodiments are directed to a ground reaction sensor cluster (GRSC) and to methods for precisely determining zero velocity points and bearing changes using a GRSC and for navigating using a GRSC and an inertial motion unit (IMU) in a global positioning satellite (GPS)-denied environment. The GRSC device itself includes an array of capacitive pressure and shear sensors. The array includes multiple flexible capacitive sensor cells that detect changes in capacitance in response to a footstep. Each cell of the array includes multiple overlapping, fingered capacitors that detect pressure and shear force by determining the change in capacitance in each fingered capacitor. The GRSC device also includes a multiplexing receiver that receives the capacitance inputs from each of the capacitive sensor cells. The multiplexing receiver and other electronic elements further process the received capacitance inputs to determine, based on the pressure and shear forces, the direction and bearing of the footstep.Type: ApplicationFiled: July 27, 2011Publication date: February 2, 2012Inventors: Carlos H. Mastrangelo, Rajesh Surapaneni
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Patent number: 7125478Abstract: The present invention relates to microfabrication and utilization of microscale electrophoresis devices as well as the separation and detection of biomolecules in microscale electrophoresis devices. The device of the present invention utilizes novel fabrication and detection methods.Type: GrantFiled: January 15, 2003Date of Patent: October 24, 2006Assignee: The Regents of the University of MichiganInventors: Ponnambalam Selvaganapathy, Mark A. Burns, David T. Burke, Carlos H. Mastrangelo
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Patent number: 7066453Abstract: The movement and mixing of microdroplets through microchannels is described employing silicon-based microscale devices, comprising microdroplet transport channels, reaction regions, electrophoresis modules, and radiation detectors. The discrete droplets are differentially heated and propelled through etched channels. Electronic components are fabricated on the same substrate material, allowing sensors and controlling circuitry to be incorporated in the same device.Type: GrantFiled: December 28, 2000Date of Patent: June 27, 2006Assignee: The Regents of the University of MichiganInventors: Mark A. Burns, Carlos H. Mastrangelo, Timothy S. Sammarco, Francis P. Man, James R. Webster, Brian N. Johnson, Bradley Foerster, Darren Jones, Yakeitha Fields, Adam Kaiser, David T. Burke
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Publication number: 20030213693Abstract: The present invention relates to microfabrication and utilization of microscale electrophoresis devices as well as the separation and detection of biomolecules in microscale electrophoresis devices. The device of the present invention utilizes novel fabrication and detection methods.Type: ApplicationFiled: January 15, 2003Publication date: November 20, 2003Applicant: The Regents Of The University Of MichiganInventors: Ponnambalam Selvaganapathy, Mark A. Burns, David T. Burke, Carlos H. Mastrangelo
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Patent number: 6494433Abstract: A microfluidic device adapted for use with a power source is disclosed. The device includes a substrate and a heater member. The substrate and heater member form a first portion. A second portion is formed adjacent to the first portion. The second portion includes a high activating power polymer portion, at least one resin layer and a shield member. The second portion is selectively shaped to form a thermal expansion portion. A diaphragm member encapsulates the thermal expansion portion so that when power is applied to the heater portion, the high activating power polymer expands against the diaphragm member, causing the diaphragm member to deflect. This device is adapted for use as a microactuator or a blocking microvalve.Type: GrantFiled: June 5, 2001Date of Patent: December 17, 2002Assignee: The Regents of the University of MichiganInventors: Carlos H. Mastrangelo, Edwin T. Carlen
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Publication number: 20020037221Abstract: A microfluidic device adapted for use with a power source is disclosed. The device includes a substrate and a heater member. The substrate and heater member form a first portion. A second portion is formed adjacent to the first portion. The second portion includes a high activating power polymer portion, at least one resin layer and a shield member. The second portion is selectively shaped to form a thermal expansion portion. A diaphragm member encapsulates the thermal expansion portion so that when power is applied to the heater portion, the high activating power polymer expands against the diaphragm member, causing the diaphragm member to deflect. This device is adapted for use as a microactuator or a blocking microvalve.Type: ApplicationFiled: June 5, 2001Publication date: March 28, 2002Inventors: Carlos H. Mastrangelo, Edwin T. Carlen
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Publication number: 20010046703Abstract: The movement and mixing of microdroplets through microchannels is described employing silicon-based microscale devices, comprising microdroplet transport channels, reaction regions, electrophoresis modules, and radiation detectors. The discrete droplets are differentially heated and propelled through etched channels. Electronic components are fabricated on the same substrate material, allowing sensors and controlling circuitry to be incorporated in the same device.Type: ApplicationFiled: December 28, 2000Publication date: November 29, 2001Applicant: The Regents Of The University Of MichiganInventors: Mark A. Burns, Carlos H. Mastrangelo, Timothy S. Sammarco, Francis P. Man, James R. Webster, Brian N. Johnson, Bradley Foerster, Darren Jones, Yakeitha Fields, Adam Kaiser, David T. Burke
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Patent number: 6300632Abstract: An uncooled infrared imager and associated microelectromechanical infrared detectors based on an active pixel heat balancing technique are disclosed. The imager is fabricated using a commercial CMOS process plus a simple electrochemical etch stop releasing step. The basic active pixel detector structure consists of a simple cascode CMOS amplifier in which the PMOS devices are built inside a thermally-isolated floating n-well. The intrinsic coupling of the cascode currents with the self-heating of the well forms an electrothermal feedback loop that tends to maintain the well temperature constant. By employing the heat balance between incoming infrared radiation and the PMOS device power dissipation, the responsivity of the detector is controlled by the cascode biasing current.Type: GrantFiled: October 14, 1999Date of Patent: October 9, 2001Assignee: The Regents of the University of MichiganInventors: Chien-Chang Liu, Carlos H. Mastrangelo
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Patent number: 6271021Abstract: The movement and mixing of microdroplets through microchannels is described employing silicon-based microscale devices, comprising microdroplet transport channels, reaction regions, electrophoresis modules, and radiation detectors. The discrete droplets are differentially heated and propelled through etched channels. Electronic components are fabricated on the same substrate material, allowing sensors and controlling circuitry to be incorporated in the same device.Type: GrantFiled: March 18, 1999Date of Patent: August 7, 2001Assignee: The Regents of The University of MichiganInventors: Mark A. Burns, Carlos H. Mastrangelo, Timothy S. Sammarco, Francis P. Man, James R. Webster, Brian N. Johnson, Bradley Foerster, Darren Jones
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Patent number: 6136212Abstract: The present invention relates to polymer-based micro-electro-mechanical system (MEMS) technology suitable for the fabrication of integrated microfluidic systems, particularly medical and chemical diagnostics system, ink-jet printer head, as well as any devices that requires liquid- or gas-filled cavities for operation. The integrated microfluidic systems may consist of pumps, valves, channels, reservoirs cavities, reaction chambers, mixers, heaters, fluidic interconnects, diffusers, nozzles, and other microfluidic components on top of a regular circuit substrate. This technology is vastly superior than any alternatives available such as glass-based, polysilicon-based MEMS technology as well as hybrid `circuit board` technology because of its simple construction low cost, low temperature processing, and its ability to integrate any electronic circuitry easily along with the fluidic parts.Type: GrantFiled: August 6, 1997Date of Patent: October 24, 2000Assignee: The Regents of the University of MichiganInventors: Carlos H. Mastrangelo, Piu F. Man, James R. Webster
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Patent number: 6130098Abstract: The movement and mixing of microdroplets through microchannels is described employing microscale devices, comprising microdroplet transport channels, reaction regions, electrophoresis modules, and radiation detectors. The discrete droplets are differentially heated and propelled through etched channels. Electronic components are fabricated on the same substrate material, allowing sensors and controlling circuitry to be incorporated in the same device.Type: GrantFiled: September 26, 1997Date of Patent: October 10, 2000Assignee: The Regents of the University of MichiganInventors: Kalyan Handique, Bishnu Gogoi, Mark A. Burns, Carlos H. Mastrangelo
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Patent number: 6057149Abstract: The movement and mixing of microdroplets through microchannels is described employing silicon-based microscale devices, comprising microdroplet transport channels, reaction regions, electrophoresis modules, and radiation detectors. The discrete droplets are differentially heated and propelled through etched channels. Electronic components are fabricated on the same substrate material, allowing sensors and controlling circuitry to be incorporated in the same device.Type: GrantFiled: September 15, 1995Date of Patent: May 2, 2000Assignee: The University of MichiganInventors: Mark A. Burns, Carlos H. Mastrangelo, Timothy S. Sammarco, Francis P. Man, James R. Webster, Brian N. Johnson, Bradley Foerster, Darren Jones, Yakeitha Fields, Adam Kaiser, David T. Burke