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公开(公告)号：US11278215B2
公开(公告)日：2022-03-22
申请号：US17174922
申请日：2021-02-12
Applicant: Massachusetts Institute of Technology
Inventor： Nickolas Peter Demas , Ian W. Hunter
Abstract: An acoustic system can track gas emissions by exploiting the nostril-accessible nasal pathways of an animal. Actuators and microphones used in the apparatus can be similar to those currently found in cell phones, which in turn make the acoustic apparatus small and rugged. The nostril geometry can be mapped using sound waves, similar to the mapping done by an acoustic rhinometer. Where acoustic rhinometers assume a constant speed of sound to measure changes in geometry, acoustic approaches as disclosed herein can assume constant geometry to measure changes in the speed of sound. Approaches disclosed here are particularly useful with any gas, such as (for example) methane, hydrogen, helium, etc. that has a speed of sound higher than other typical gaseous components of exhaled air, such as nitrogen, carbon-dioxide, oxygen, etc.
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公开(公告)号：US20200022803A1
公开(公告)日：2020-01-23
申请号：US16483881
申请日：2018-03-13
Applicant: Massachusetts Institute of Technology
Inventor： Seyed M. Mirvakili , Ian W. Hunter
Abstract: A torsional actuator formed of a yarn of twisted shape memory material. The yarn has multiple strands of homogeneous shape memory material that have been homochirally twisted. For torsional actuation, a fractional portion of the yarn is heated such as by Joule heating. Various Joule heating mechanisms include passing an electrical current through an unwound segment of the yarn, or by coating a fractional portion of the length of each homogeneous strand with a coating material of higher electrical conductivity than the electrical conductivity of the shape memory material an passing current through the length of the yarn. The shape memory material may be a shape memory alloy such as a NiTi alloy.
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公开(公告)号：US10444007B2
公开(公告)日：2019-10-15
申请号：US15870920
申请日：2018-01-13
Applicant: Massachusetts Institute of Technology
Inventor： Yi Chen Mazumdar , Ian W. Hunter
Abstract: A spectral imaging system includes an autocorrelator to generate different autocorrelations when the moving reflector in the autocorrelator is at different positions so as to reconstruct spectral images. The system also includes a position measurement system to measure the actual positions of the moving reflector when autocorrelations are taken. These actual locations, instead of the desired locations in conventional methods, are then used to reconstruct the spectral image. This approach can address the misalignment of the moving reflector from its desired location (due to external disturbances, slow actuator dynamics, and other factors) in conventional spectral imaging techniques and allow the development of high-resolution, high-stability, portable imaging spectrometers for the general public.
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公开(公告)号：US10195113B2
公开(公告)日：2019-02-05
申请号：US14699846
申请日：2015-04-29
Applicant: Massachusetts Institute of Technology
Inventor： Ian W. Hunter , Ashin P. Modak , Nora Catherine Hogan
Abstract: A needle-free adaptor for removing liquid from a vial comprises a cannula adapted to piece a septum of a vial, a plurality of legs surrounding the cannula to secure the adaptor to the vial when the cannula has pieced the septum, an elastomeric membrane having a normally closed pinhole orifice, and a conforming surface having an orifice connected to the cannula. The elastomeric membrane has a stable convex shape and is adapted to receive a nozzle of a needle-free device. Pressed against the elastomeric membrane, the nozzle deflects the elastomeric membrane from the convex shape to an unstable or pseudo-stable inverted position against the conforming surface. Buckling of the elastomeric membrane opens the pinhole orifice and enables fluid communication between the vial and the nozzle by interfacing the pinhole orifice with the orifice on the conforming surface.
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公开(公告)号：US09865404B2
公开(公告)日：2018-01-09
申请号：US14839499
申请日：2015-08-28
Applicant: Massachusetts Institute of Technology
Inventor： Seyed M. Mirvakili , Ian W. Hunter
IPC: H01G11/78 , H01G9/048 , H01G11/26 , H01G11/30 , H01G11/52 , H01G11/56 , H01G11/58 , H01G11/86 , H01G9/04
CPC classification number: H01G11/78 , H01G9/048 , H01G11/26 , H01G11/30 , H01G11/52 , H01G11/56 , H01G11/58 , H01G11/86 , H01G2009/05 , Y02E60/13
Abstract: An energy-storage device is formed from a first and a second yarn, each yarn including a plurality of nanowires including aluminum and/or a transition metal. An anode pad is in contact with the first yarn and a cathode pad is in contact with the second yarn. Alternatively, first and second metallic electrodes may be disposed substantially in parallel, with pluralities of nanowires including aluminum and/or a transition metal extending therefrom. In another embodiment, a supercapacitor may include a niobium yarn including a plurality of niobium nanowires. Each niobium nanowire may include at least (i) a first section comprising at least one of unoxidized niobium and niobium oxide; (ii) a second section comprises a niobium pentoxide layer; and (iii) a third section comprises a layer formed by coating the niobium nanowire in at least one of a conductive polymer and a liquid metal.
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Patent Agency Ranking
公开(公告)号：US09735000B2
公开(公告)日：2017-08-15
申请号：US15045883
申请日：2016-02-17
Applicant: The Massachusetts Institute of Technology
Inventor： Ian W. Hunter , Brian Hemond , Harold F. Hemond
CPC classification number: H01J49/30 , H01J49/0013 , H01J49/0031 , H01J49/022 , H01J49/147 , H01J49/24
Abstract: A miniature, low cost mass spectrometer capable of unit resolution over a mass range of 10 to 50 AMU. The mass spectrometer incorporates several features that enhance the performance of the design over comparable instruments. An efficient ion source enables relatively low power consumption without sacrificing measurement resolution. Variable geometry mechanical filters allow for variable resolution. An onboard ion pump removes the need for an external pumping source. A magnet and magnetic yoke produce magnetic field regions with different flux densities to run the ion pump and a magnetic sector mass analyzer. An onboard digital controller and power conversion circuit inside the vacuum chamber allows a large degree of flexibility over the operation of the mass spectrometer while eliminating the need for high-voltage electrical feedthroughs. The miniature mass spectrometer senses fractions of a percentage of inlet gas and returns mass spectra data to a computer.
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17.发明授权公开(公告)号：US09588087B2
公开(公告)日：2017-03-07
申请号：US14521885
申请日：2014-10-23
Applicant: Massachusetts Institute of Technology
Inventor： Ian W. Hunter , Eli T. Paster
CPC classification number: G01N30/16 , G01N30/68 , G01N2030/025 , G01N2030/027 , G01N2030/167 , G01N2030/623
Abstract: A method and system for continuous measurement chromatograph involves stochastically modulating a system variable. The sample can be introduced into a chromatography column. The sample introduction can be modulated stochastically. The sample output from the column can be detected and processed with the stochastic input to provide a sample analysis.
Abstract translation: 用于连续测量色谱的方法和系统涉及随机调制系统变量。 样品可以引入色谱柱。 样品介绍可随机调制。 可以使用随机输入检测和处理来自色谱柱的样品输出，以提供样品分析。
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公开(公告)号：US20160197542A1
公开(公告)日：2016-07-07
申请号：US15066868
申请日：2016-03-10
Applicant: Massachusetts Institute of Technology
Inventor： Ian W. Hunter , Andrew J. Taberner , Brian D. Hemond , Dawn M. Wendell , Nora Catherine Hogan , Nathan B. Ball
CPC classification number: H02K41/02 , A61B17/20 , A61B17/205 , A61D7/00 , A61M5/19 , A61M5/30 , A61M2205/50 , A61M2205/6009 , A61M2205/825 , A61M2250/00
Abstract: A needle-free transdermal transport device for transferring a substance across a surface of a biological body includes a reservoir for storing the substance, a nozzle in fluid communication with the reservoir and a controllable electromagnetic actuator in communication with the reservoir. The actuator, referred to as a Lorentz force actuator, includes a stationary magnet assembly and a moving coil assembly. The coil assembly moves a piston having an end portion positioned within the reservoir. The actuator receives an electrical input and generates in response a corresponding force acting on the piston and causing a needle-free transfer of the substance between the reservoir and the biological body. The magnitude, direction and duration of the force are dynamically controlled (e.g., servo-controlled) by the electrical input and can be altered during the course of an actuation cycle. Beneficially, the actuator can be moved in different directions according to the electrical input.
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公开(公告)号：US20160064156A1
公开(公告)日：2016-03-03
申请号：US14839499
申请日：2015-08-28
Applicant: Massachusetts Institute of Technology
Inventor： Seyed M. Mirvakili , Ian W. Hunter
CPC classification number: H01G11/78 , H01G9/048 , H01G11/26 , H01G11/30 , H01G11/52 , H01G11/56 , H01G11/58 , H01G11/86 , H01G2009/05 , Y02E60/13
Abstract: An energy-storage device is formed from a first and a second yarn, each yarn including a plurality of nanowires including aluminum and/or a transition metal. An anode pad is in contact with the first yarn and a cathode pad is in contact with the second yarn. Alternatively, first and second metallic electrodes may be disposed substantially in parallel, with pluralities of nanowires including aluminum and/or a transition metal extending therefrom. In another embodiment, a supercapacitor may include a niobium yarn including a plurality of niobium nanowires. Each niobium nanowire may include at least (i) a first section comprising at least one of unoxidized niobium and niobium oxide; (ii) a second section comprises a niobium pentoxide layer; and (iii) a third section comprises a layer formed by coating the niobium nanowire in at least one of a conductive polymer and a liquid metal.
Abstract translation: 储能装置由第一和第二纱线形成，每根纱线包括多个包括铝和/或过渡金属的纳米线。 阳极垫与第一纱线接触，阴极垫与第二纱线接触。 或者，第一和第二金属电极可以基本上平行设置，多个纳米线包括铝和/或从其延伸的过渡金属。 在另一个实施例中，超级电容器可以包括包括多个铌纳米线的铌纱线。 每个铌纳米线可以包括至少（i）包含未氧化的铌和氧化铌中的至少一种的第一部分; （ii）第二部分包括五氧化二铌层; 和（iii）第三部分包括通过在导电聚合物和液态金属中的至少一种中涂覆铌纳米线形成的层。
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公开(公告)号：US11120983B2
公开(公告)日：2021-09-14
申请号：US16876527
申请日：2020-05-18
Applicant: Massachusetts Institute of Technology
Inventor： Ian W. Hunter , Brian D. Hemond , Harold F. Hemond
Abstract: A miniature, low cost mass spectrometer capable of unit resolution over a mass range of 10 to 50 AMU. The mass spectrometer incorporates several features that enhance the performance of the design over comparable instruments. An efficient ion source enables relatively low power consumption without sacrificing measurement resolution. Variable geometry mechanical filters allow for variable resolution. An onboard ion pump removes the need for an external pumping source. A magnet and magnetic yoke produce magnetic field regions with different flux densities to run the ion pump and a magnetic sector mass analyzer. An onboard digital controller and power conversion circuit inside the vacuum chamber allows a large degree of flexibility over the operation of the mass spectrometer while eliminating the need for high-voltage electrical feedthroughs. The miniature mass spectrometer senses fractions of a percentage of inlet gas and returns mass spectra data to a computer.
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