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公开(公告)号：US10024799B2
公开(公告)日：2018-07-17
申请号：US15122170
申请日：2015-02-13
Applicant: INDIAN INSTITUTE OF SCIENCE
Inventor： Siva Umapathy , Sanchita Sil , Gagan Dhal , Freek Ariese
CPC classification number: G01N21/65 , G01B11/00 , G01J3/0221 , G01J3/027 , G01J3/0289 , G01J3/44 , G01J3/4412 , G01N21/4795 , G01N2201/0221 , G01N2201/06113 , G01N2201/0826 , G01N2201/0833
Abstract: The invention provides a method for chemical signature resolved detection of a concealed object within a system. The method includes irradiating the system at a plurality of positions with aplurality of electromagnetic radiation of specific wavelength; capturing a certain component of the scattered electromagnetic radiation from the object at a plurality of locations along various 3D planes around the system; obtaining a plurality of profiles from the captured component of the scattered electromagnetic radiation; filtering the profiles to obtain a chemical signature specific to the object; and resolving the chemical signatures to detect the concealed object, wherein, the step of detection includes determination of the shape, size and location of the object.
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公开(公告)号：US09983136B2
公开(公告)日：2018-05-29
申请号：US14374933
申请日：2013-09-02
Applicant: INDIAN INSTITUTE OF SCIENCE
Inventor： Siva Umapathy , Sanchita Sil , John Kiran
CPC classification number: G01N21/65 , G01J3/4412 , G01N2201/06113 , G01N2201/068 , G01N2201/129
Abstract: The invention provides a method for obtaining sample specific signatures. The method comprises of irradiating the sample at a predefined location with an electromagnetic radiation of specific wavelength; selectively capturing a certain component of the scattered electromagnetic radiation to obtain a plurality of profiles; and filtering the profiles to obtain a sample specific signature. The invention provides an apparatus for obtaining sample specific signatures.
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公开(公告)号：US12281987B2
公开(公告)日：2025-04-22
申请号：US18269557
申请日：2021-12-22
Applicant: INDIAN INSTITUTE OF SCIENCE
Inventor： Siva Umapathy , Sanchita Sil , Dipak Kumbhar , Srividya Kumar
IPC: G01N21/65
Abstract: The invention provides a method for homogenized coherent excitation of a sample for determining molecular structure. The method includes selecting a monochromatic coherent light, homogenizing the monochromatic coherent light; irradiating the sample with the homogenized monochromatic light; collecting the Raman scattered light to obtain a profile and analyzing the profile to obtain chemical specific signature of the sample. The invention also provides a method for obtaining two dimensional imaging of a sample using irradiation of large sample area by homogenized monochromatic light without compromise in spatial resolution. A system for homogenized coherent excitation of a sample for determining molecular structure is also provided.
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公开(公告)号：US09606062B2
公开(公告)日：2017-03-28
申请号：US14374928
申请日：2013-09-02
Applicant: INDIAN INSTITUTE OF SCIENCE
Inventor： Siva Umapathy , Sanchita Sil , John Kiran
CPC classification number: G01N21/65 , G01N21/51 , G01N33/227 , G01N2201/06113 , G01N2201/063
Abstract: The invention provides a method for detection of hazardous chemicals in a non-metallic container. The method comprises of irradiating the sample at a predefined location with an electromagnetic radiation of specific wavelength; selectively capturing a certain component of the scattered electromagnetic radiation to obtain a plurality of profiles; and filtering the profiles to obtain a signature specific to at least one hazardous chemical present in the container. The invention provides a system for obtaining a signature specific to the hazardous chemicals in the container.
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