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公开(公告)号：US11189432B2
公开(公告)日：2021-11-30
申请号：US16085578
申请日：2017-08-29
Applicant: INDIAN INSTITUTE OF TECHNOLOGY, GUWAHATI
Inventor： Mitradip Bhattacharjee , Seim Timung , Dipankar Bandyopadhyay , Tapas Kumar Mandal
Abstract: Present invention discloses a microfluidic energy harvester for converting solar energy into electrical energy. A preferred embodiment of the present microfluidic energy harvester includes a substrate having an embedded central microchannel, electrolyte configured to reside and/or flow in said central microchannel and electrode assembly having one or more pair of electrodes arranged in a series and integrated with said central microchannel from sides ensuring direct contact between said pair for electrodes with said electrolyte while it reside and/or flow in said central microchannel for ensuing electrochemical photovoltaic effect to convert the solar energy into the electrical energy under direct solar illumination by working under regenerative conditions. The microfluidic energy harvester is capable of producing high density power from three different resources, (a) the solar irradiation produces a photovoltaic potential difference between the metal/metal-oxide electrodes, (b) SPR of the metal nanoparticles suspended in the electrolyte amplifies the photovoltaic potential difference under solar irradiation, and (c) the flow of the nanoparticle laden electrolyte produces a streaming potential between the electrodes by converting the mechanical energy into the electrical one near the electrodes. The transparency of the polymer and adequate absorptivity of the metal/metal-oxide electrodes ensured facile absorption of solar irradiation in the microfluidic energy harvester. The flexibility of the MEH can be tuned by adjusting the cross-linking of the PDMS matrix. The multiplicity of the microchannels and electrodes are expected to increase the total amount of energy harvested.
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公开(公告)号：US10883182B2
公开(公告)日：2021-01-05
申请号：US15773365
申请日：2017-01-16
Applicant: INDIAN INSTITUTE OF TECHNOLOGY, GUWAHATI
Inventor： Dipankar Bandyopadhyay , Tapas K Mandal , Saptak Rarotra
Abstract: A microfluidic electrolyzer includes a housing having a power source, a sea water reservoir, a downstream microfluidic reactor connected to the reservoir and a collector for storing the separated gases emanating from the microfluidic reactor. The downstream microfluidic reactor includes a substrate, a microchannel embedded with respect to the substrate and providing a water inlet end at one end and a product outlet at the other, and a pair of electrodes. The electrodes are electrically connected with the power source and each electrode has an operative end inserted within the microchannel constituting an anode and a cathode. The cathode and the anode are positioned one ahead of the other, from the water inlet end and maintained in direct contact with the water to generate the oxygen and hydrogen involving electrolysis of the water and in-situ separate pathways of the hydrogen and oxygen free of any mixing with each other.
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公开(公告)号：US20250083854A1
公开(公告)日：2025-03-13
申请号：US18020030
申请日：2022-07-08
Applicant: INDIAN INSTITUTE OF TECHNOLOGY GUWAHATI
Inventor： Gurdeep SINGH , Abhishek SINGH , Sougata KARMAKAR
IPC: B65B69/00
Abstract: An improved apparatus 100 for cutting and squeezing sachets/pouches is disclosed, having a cutting and sliding assembly 200 configured to allow linear movement of one or more sachets/pouches and cut the one or more sachets/pouches as the one or more sachets/pouches undergo linear movement: and a roller assembly 300 configured to pull the one or more sachets/pouches through the cutting and sliding assembly. and squeeze the one or more sachets/pouches as the one or more sachets are pulled. the squeezing resulting in extracting contents of the one or more sachets/pouches. The cutting and sliding assembly 200 and the roller assembly 300 are accommodated within a container assembly 400 such that the squeezed out contents are collected within a container of the container assembly 400.
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4.发明授权公开(公告)号：US10900909B2
公开(公告)日：2021-01-26
申请号：US15773456
申请日：2017-01-16
Applicant: INDIAN INSTITUTE OF TECHNOLOGY, GUWAHATI
Inventor： Dipankar Bandyopadhyay , Nilanjan Mandal , Satarupa Dutta
Abstract: A transmittance based system/kit for point-of-care quantification of biomarker samples includes a stage supporting a detection unit, an optical transmittance unit and a signal processing unit. The detection unit comprising reactive substrate is capable of undergoing a specific biomarker sample interactive reaction and generating a quantifiable optical signal proportional to the concentration of the said biomarker sample wherein the intensity of the color varies with the concentration of the analyte in the bio-sample. The optical transmittance unit, comprises a sample stage integrated with the light source and a photodetector, converting quantifiable optical signal transmitted through the reagent coated substrate detection unit to electrical signals, a signal processing unit connected to the said optical transmittance unit transduces the analogue electrical signal into the digital display signal. The simple, single step, cost-effective easily disposable system/kit is useful for point-of-care detection of important biomarkers such as amylase, creatinine, albumin, among others.
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公开(公告)号：US10673525B2
公开(公告)日：2020-06-02
申请号：US15745142
申请日：2016-07-15
Applicant: The Secretary, Department of Electronics and Information Technology (DEITY) , Indian Institute of Technology Guwahati
Inventor： Bosanta Ranjan Boruah , Santanu Konwar
IPC: H04B10/112 , H04B10/516 , H04B10/69 , H04B10/548 , G01J9/00
Abstract: The present invention provides a free space optical communication system that uses orthogonal modes of aberration in a laser beam as means for encoding the information. The system comprises a transmission station which transmits the user defined information in terms of the amplitudes of certain orthogonal aberration modes present in the transmitted beam. The beam then travels through free space before it reaches the receiving station. The receiving station comprises a high speed wavefront sensor of light beams. The wavefront sensor measures the amplitudes of various orthogonal aberration modes present in the incident beam at different instants of time. The amplitudes of the orthogonal modes at a certain regular time interval are then used to extract the user information.
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Patent Agency Ranking
公开(公告)号：US20190013865A1
公开(公告)日：2019-01-10
申请号：US15745142
申请日：2016-07-15
Applicant: THE SECRETARY, DEPARTMENT OF ELECTRONICS AND INFORMATION TECHNOLOGY , INDIAN INSTITUTE OF TECHNOLOGY GUWAHATI
Inventor： Bosanta Ranjan Boruah , Santanu Konwar
IPC: H04B10/112 , H04B10/548
CPC classification number: H04B10/1121 , G01J2009/002 , H04B10/548
Abstract: The present invention provides a free space optical communication system that uses orthogonal modes of aberration in a laser beam as means for encoding the information. The system comprises a transmission station which transmits the user defined information in terms of the amplitudes of certain orthogonal aberration modes present in the transmitted beam. The beam then travels through free space before it reaches the receiving station. The receiving station comprises a high speed wavefront sensor of light beams. The wavefront sensor measures the amplitudes of various orthogonal aberration modes present in the incident beam at different instants of time. The amplitudes of the orthogonal modes at a certain regular time interval are then used to extract the user information.
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公开(公告)号：US11185256B2
公开(公告)日：2021-11-30
申请号：US16324558
申请日：2017-08-29
Applicant: INDIAN INSTITUTE OF TECHNOLOGY, GUWAHATI
Inventor： Mitradip Bhattacharjee , Dipankar Bandyopadhyay , Sunny Kumar
Abstract: A portable hand tremor detection device has been reported. This device is composed of a detection unit, a flexible pressure sensor, a signal processing unit, and a power supply. The detection unit is composed of the sensor and press-knob. The flexible pressure sensor is a combination of usually spaced apart flexible polymer preferably polydimethylsiloxane, flexible substrate preferably paper, and a conductive coating preferably reduced graphene oxide (RGO). When the users put pressure on the press-knob through the fingers, the flexible pressure sensor actuates and bends so that conductive RGO layers on the flexible substrates come in contact with each other to generate an output current. The electrical circuits in the signal processing unit are laid down in such a manner that the magnitude of this output current varies with the tremor between the fingers, which eventually converted into an electrical signal showing the variation in the hand tremor with time.
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公开(公告)号：US20200163587A1
公开(公告)日：2020-05-28
申请号：US16080021
申请日：2017-08-29
Applicant: INDIAN INSTITUTE OF TECHNOLOGY, GUWAHATI
Inventor： Mitradip BHATTACHARJEE , Dipankar BANDYOPADHYAY , Harshal B. NEMADE
Abstract: The present invention discloses a Lung condition monitoring device for performing ultrafast detection of humidity level in exhaled air while breathing out and therefrom detect condition of the human lungs in real time. The Lung 5 condition monitoring device comprises a mouthpiece for forcibly exhaling air there through, one or more humidity sensor to measure the variable electrical resistance based on level of adsorption of water molecules thereon of the humidity content of exhaled air and real time monitoring unit operatively connected to said humidity sensor and having correlating means for correlating 10 the change in humidity level and related variation in the electrical resistance due to exhalation to peak flow rate of the exhaled air for monitoring lung condition. The Lung condition monitoring device is also capable of wireless data transfer to any peripheral computing device such as mobile phone via wireless connectivity and show the test results on the mobile phone display with the help of a 15 proprietary application embodied in the phones operating system. The mobile interface increases the portability, data monitoring, and user friendliness of the device. Further, the mobile interface helps in storage and analysis of big time data for prognosis, diagnosis, and therapeutic purposes.
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9.发明申请公开(公告)号：US20180327916A1
公开(公告)日：2018-11-15
申请号：US15773365
申请日：2017-01-16
Applicant: INDIAN INSTITUTE OF TECHNOLOGY, GUWAHATI
Inventor： Dipankar BANDYOPADHYAY , Tapas K MANDAL , Saptak RAROTRA
CPC classification number: C25B9/06 , C25B1/003 , C25B1/04 , C25B9/00 , Y02E60/366 , Y02E70/10 , Y02P20/134
Abstract: A microfluidic electrolyzer includes a housing having a power source, a sea water reservoir, a downstream microfluidic reactor connected to the reservoir and a collector for storing the separated gases emanating from the microfluidic reactor. The downstream microfluidic reactor includes a substrate, a microchannel embedded with respect to the substrate and providing a water inlet end at one end and a product outlet at the other, and a pair of electrodes. The electrodes are electrically connected with the power source and each electrode has an operative end inserted within the microchannel constituting an anode and a cathode. The cathode and the anode are positioned one ahead of the other, from the water inlet end and maintained in direct contact with the water to generate the oxygen and hydrogen involving electrolysis of the water and in-situ separate pathways of the hydrogen and oxygen free of any mixing with each other.
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10.发明申请INJECTION MOULDABLE POLYMERIC COMPOSITE BASED PASSIVE POLYCENTRIC KNEE JOINT 有权注射易混合聚合物复合材料无源聚碳酸酯接头公开(公告)号：US20160089243A1
公开(公告)日：2016-03-31
申请号：US14840052
申请日：2015-08-31
Applicant: DEPARTMENT OF BIOTECHNOLOGY, MINISTRY OF SCIENCE & TECHNOLOGY , Indian Institute of Technology Guwahati
Inventor： Srinivasan ARUN , Subramani KANAGARAJ
IPC: A61F2/38
CPC classification number: A61F2/644 , A61F2210/0076
Abstract: The present invention mainly relates to knee joint and more particularly to the polymeric composite or nanocomposites based polycentric knee joint. In one embodiment the knee joint comprising: a top part having a top face and a bottom face, wherein the top face having an adapter coupled firmly with the top part to transfer the load from the stump of amputee via socket, a bottom part having a top face and a bottom face, at least one middle linkage pivotably coupling a middle posterior region of the top part with a middle posterior region of the bottom part, at least two side identical linkage pivotably coupling a sides of the top part with a sides of the bottom part, a compression spring along with cylindrical rod positioned in the interior of the bottom part which provides the engaging and disengaging of the top and bottom part, at least two extension spring couples the top and bottom part through two tiny holes and through simple supported beam in the top and bottom part for the flexion and extension of the knee joint and a bumper positioned in the base of the bottom part which contacts with the pylon to absorb the vibration and the terminal impact during the hip hike.
Abstract translation: 本发明主要涉及膝关节，更具体地涉及聚合复合材料或基于纳米复合材料的多中心膝关节。 在一个实施例中，膝关节包括：具有顶面和底面的顶部部分，其中顶面具有与顶部牢固连接的适配器，以通过插座从截肢者的残端传送负载，底部具有 上表面和底面，至少一个中间连接件，其将顶部的中间后部区域与底部的中间后部区域可枢转地联接，至少两个侧面相同的连接件可枢转地将顶部部分的侧面与 底部，压缩弹簧以及位于底部内部的圆柱形杆，其提供顶部和底部部分的接合和分离，至少两个延伸弹簧将顶部和底部部分穿过两个微小孔并且通过简单的 在顶部和底部的支撑梁用于膝关节的屈曲和伸展，以及位于底部的底部的缓冲器，其与塔架接触以吸收振动，并且 终端在臀部的影响。
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