Patents by Inventor Tamal Mukherjee
Tamal Mukherjee 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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Publication number: 20240304428Abstract: A method of cleaning residue containing ruthenium (Ru) residue on at least one surface of a component of a semiconductor processing chamber is provided. The residue is exposed to a Ru cleaning composition comprising at least one of hypochlorite and 03 based chemistries, wherein the Ru cleaning composition removes the Ru residue.Type: ApplicationFiled: December 6, 2021Publication date: September 12, 2024Inventors: Wenbing YANG, Samantha SiamHwa TAN, Ran LIN, Tamal MUKHERJEE, Chunhong ZHOU, Xiaoyu KANG, Yang PAN, Hong SHIH
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Publication number: 20240302185Abstract: A system includes an inertial sensing device having an inertial sensor and plurality of stress sensors configured to measure stress applied to the inertial sensing device, and at least one computing device configured to: receive sensor data from the inertial sensor and the plurality of stress sensors; and determine a drift compensation of the inertial sensor based on the sensor data. Other systems, methods, and devices are disclosed.Type: ApplicationFiled: January 14, 2022Publication date: September 12, 2024Applicant: Carnegie Mellon UniversityInventors: Gary K. Fedder, Tamal Mukherjee, Vincent P.J. Chung
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Patent number: 12080562Abstract: A method for selectively etching a stack with respect to a mask is provided. An atomic layer etch is provided to at least partially etch the stack, wherein the atomic layer etch forms at least some residue. An ion beam is provided to etch the stack, wherein the ion beam etch removes at least some of the residue from the atomic layer etch.Type: GrantFiled: September 9, 2020Date of Patent: September 3, 2024Assignee: Lam Research CorporationInventors: Samantha Siamhwa Tan, Tamal Mukherjee, Wenbing Yang, Girish Dixit, Yang Pan
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Publication number: 20240274408Abstract: Methods and apparatus for performing high energy atomic layer etching are provided herein. Methods include providing a substrate having a material to be etched, exposing a surface of the material to a modification gas to modify the surface and form a modified surface, and exposing the modified surface to an energetic particle to preferentially remove the modified surface relative to an underlying unmodified surface where the energetic particle has an ion energy sufficient to overcome an average surface binding energy of the underlying unmodified surface. The energy of the energetic particle used is very high; in some cases, the power applied to a bias used when exposing the modified surface to the energetic particle is at least 150 eV.Type: ApplicationFiled: April 3, 2024Publication date: August 15, 2024Inventors: Wenbing Yang, Samantha Tan, Tamal Mukherjee, Keren Jacobs Kanarik, Yang Pan
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Publication number: 20240186150Abstract: A method for atomic layer etching a metal containing layer is provided. At least a region of a surface of the metal containing layer is modified to form a modified metal containing region by exposing a surface of the metal containing layer to a modification gas, wherein adjacent to the modified metal containing region remains an unmodified metal containing region. The modified metal containing region is selectively removed with respect to the unmodified metal containing region by exposing the surface of the metal containing layer to an inert bombardment plasma generated from an inert gas.Type: ApplicationFiled: February 7, 2024Publication date: June 6, 2024Inventors: Wenbing YANG, Mohand BROURI, Samantha SiamHwa TAN, Shih-Ked LEE, Yiwen FAN, Wook CHOI, Tamal MUKHERJEE, Ran LIN, Yang Pan
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Patent number: 11935758Abstract: A method for atomic layer etching a metal containing layer is provided. At least a region of a surface of the metal containing layer is modified to form a modified metal containing region by exposing a surface of the metal containing layer to a modification gas, wherein adjacent to the modified metal containing region remains an unmodified metal containing region. The modified metal containing region is selectively removed with respect to the unmodified metal containing region by exposing the surface of the metal containing layer to an inert bombardment plasma generated from an inert gas.Type: GrantFiled: April 27, 2020Date of Patent: March 19, 2024Assignee: Lam Research CorporationInventors: Wenbing Yang, Mohand Brouri, Samantha SiamHwa Tan, Shih-Ked Lee, Yiwen Fan, Wook Choi, Tamal Mukherjee, Ran Lin, Yang Pan
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Publication number: 20240021435Abstract: A method for etching a metal containing material is provided. The metal containing material is exposed to a halogen containing fluid or plasma to convert at least some of the metal containing material into a metal halide material. The metal halide material is exposed to a ligand containing fluid or plasma, wherein at least some of the metal halide material is formed into a metal halide ligand complex. At least some of the metal halide ligand complex is vaporized.Type: ApplicationFiled: December 6, 2021Publication date: January 18, 2024Inventors: Yiwen FAN, Wenbing YANG, Ran LIN, Samantha SiamHwa TAN, Timothy William WEIDMAN, Tamal MUKHERJEE
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Publication number: 20230230819Abstract: A method for cleaning a plasma processing chamber comprising one or more cycles is provided. Each cycle comprises performing an oxygen containing plasma cleaning phase, performing a volatile chemistry type residue cleaning phase, and performing a fluorine containing plasma cleaning phase.Type: ApplicationFiled: June 8, 2021Publication date: July 20, 2023Inventors: Ran LIN, Wenbing YANG, Tamal MUKHERJEE, Jengyi YU, Samantha SiamHwa TAN, Yang PAN, Yiwen FAN
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Publication number: 20220392747Abstract: Etching a refractory metal or other high surface binding energy material on a substrate can maintain or increase the smoothness of the metal/high EO surface, in some cases produce extreme smoothing. A substrate having an exposed refractory metal/high EO surface is provided. The refractory metal/high EO surface is exposed to a modification gas to modify the surface and form a modified refractory metal/high EO surface. The modified refractory metal/high EO surface is exposed to an energetic particle to preferentially remove the modified refractory metal/high EO surface relative to an underlying unmodified refractory metal/high EO surface such that the exposed refractory metal/high EO surface after removing the modified refractory metal/high EO surface is as smooth or smoother than the substrate surface before exposing the substrate surface to the modification gas.Type: ApplicationFiled: August 19, 2022Publication date: December 8, 2022Inventors: Wenbing Yang, Tamal Mukherjee, Mohand Brouri, Samantha S.H. Tan, Yang Pan, Keren Jacobs Kanarik
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Publication number: 20220376174Abstract: A method is provided. A substrate situated in a chamber is exposed to a halogen-containing gas comprising an element selected from the group consisting of silicon, germanium, carbon, titanium, and tin, and igniting a plasma to modify a surface of the substrate and form a modified surface.Type: ApplicationFiled: July 20, 2020Publication date: November 24, 2022Inventors: Wenbing YANG, Tamal MUKHERJEE, Zhongwei ZHU, Samantha SiamHwa TAN, Ran LIN, Yang PAN, Ziad EL OTELL, Yiwen FAN
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Patent number: 11450513Abstract: Etching a refractory metal or other high surface binding energy material on a substrate can maintain or increase the smoothness of the metal/high EO surface, in some cases produce extreme smoothing. A substrate having an exposed refractory metal/high EO surface is provided. The refractory metal/high EO surface is exposed to a modification gas to modify the surface and form a modified refractory metal/high EO surface. The modified refractory metal/high EO surface is exposed to an energetic particle to preferentially remove the modified refractory metal/high EO surface relative to an underlying unmodified refractory metal/high EO surface such that the exposed refractory metal/high EO surface after removing the modified refractory metal/high EO surface is as smooth or smoother than the substrate surface before exposing the substrate surface to the modification gas.Type: GrantFiled: March 15, 2019Date of Patent: September 20, 2022Assignee: Lam Research CorporationInventors: Wenbing Yang, Tamal Mukherjee, Mohand Brouri, Samantha Tan, Yang Pan, Keren Jacobs Kanarik
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Publication number: 20220254649Abstract: A method for selectively etching a stack with respect to a mask is provided. An atomic layer etch is provided to at least partially etch the stack, wherein the atomic layer etch forms at least some residue. An ion beam is provided to etch the stack, wherein the ion beam etch removes at least some of the residue from the atomic layer etch.Type: ApplicationFiled: September 9, 2020Publication date: August 11, 2022Inventors: Samantha SiamHwa TAN, Tamal MUKHERJEE, Wenbing YANG, Girish DIXIT, Yang PAN
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Publication number: 20220199422Abstract: A method for atomic layer etching a metal containing layer is provided. At least a region of a surface of the metal containing layer is modified to form a modified metal containing region by exposing a surface of the metal containing layer to a modification gas, wherein adjacent to the modified metal containing region remains an unmodified metal containing region. The modified metal containing region is selectively removed with respect to the unmodified metal containing region by exposing the surface of the metal containing layer to an inert bombardment plasma generated from an inert gas.Type: ApplicationFiled: April 27, 2020Publication date: June 23, 2022Inventors: Wenbing YANG, Mohand BROURI, Samantha SiamHwa TAN, Shih-Ked LEE, Yiwen FAN, Wook CHOI, Tamal MUKHERJEE, Ran LIN, Yang PAN
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Patent number: 11112245Abstract: An Acousto-Optic Gyroscope (AOG) consisting of a photonic integrated device embedded into two inherently matched piezoelectric surface acoustic wave (SAW) resonators sharing the same acoustic cavity is disclosed. The micromachined strain-based AOG uses the effective index of the optical waveguide due to the acousto-optic effect rather than conventional displacement sensing.Type: GrantFiled: October 3, 2018Date of Patent: September 7, 2021Assignee: CARNEGIE MELLON UNIVERSITYInventors: Gianluca Piazza, Mohamed Mahmoud, Ashraf Mahmoud, Lutong Cai, Md Shofiqul Islam Khan, Tamal Mukherjee, James Bain
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Publication number: 20210005425Abstract: Etching a refractory metal or other high surface binding energy material on a substrate can maintain or increase the smoothness of the metal/high EO surface, in some cases produce extreme smoothing. A substrate having an exposed refractory metal/high EO surface is provided. The refractory metal/high EO surface is exposed to a modification gas to modify the surface and form a modified refractory metal/high EO surface. The modified refractory metal/high EO surface is exposed to an energetic particle to preferentially remove the modified refractory metal/high EO surface relative to an underlying unmodified refractory metal/high EO surface such that the exposed refractory metal/high EO surface after removing the modified refractory metal/high EO surface is as smooth or smoother than the substrate surface before exposing the substrate surface to the modification gas.Type: ApplicationFiled: March 15, 2019Publication date: January 7, 2021Inventors: Wenbing Yang, Tamal Mukherjee, Mohand Brouri, Samantha Tan, Yang Pan, Keren Jacobs Kanarik
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Publication number: 20200402770Abstract: Methods and apparatus for performing high energy atomic layer etching are provided herein. Methods include providing a substrate having a material to be etched, exposing a surface of the material to a modification gas to modify the surface and form a modified surface, and exposing the modified surface to an energetic particle to preferentially remove the modified surface relative to an underlying unmodified surface where the energetic particle has an ion energy sufficient to overcome an average surface binding energy of the underlying unmodified surface. The energy of the energetic particle used is very high; in some cases, the power applied to a bias used when exposing the modified surface to the energetic particle is at least 150 eV.Type: ApplicationFiled: August 31, 2020Publication date: December 24, 2020Inventors: Wenbing Yang, Samantha S.H. Tan, Tamal Mukherjee, Keren Jacobs Kanarik, Yang Pan
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Patent number: 10763083Abstract: Methods and apparatus for performing high energy atomic layer etching are provided herein. Methods include providing a substrate having a material to be etched, exposing a surface of the material to a modification gas to modify the surface and form a modified surface, and exposing the modified surface to an energetic particle to preferentially remove the modified surface relative to an underlying unmodified surface where the energetic particle has an ion energy sufficient to overcome an average surface binding energy of the underlying unmodified surface. The energy of the energetic particle used is very high; in some cases, the power applied to a bias used when exposing the modified surface to the energetic particle is at least 150 eV.Type: GrantFiled: October 1, 2018Date of Patent: September 1, 2020Assignee: Lam Research CorporationInventors: Wenbing Yang, Samantha Tan, Tamal Mukherjee, Keren Jacobs Kanarik, Yang Pan
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Publication number: 20190120624Abstract: An Acousto-Optic Gyroscope (AOG) consisting of a photonic integrated device embedded into two inherently matched piezoelectric surface acoustic wave (SAW) resonators sharing the same acoustic cavity is disclosed. The micromachined strain-based AOG uses the effective index of the optical waveguide due to the acousto-optic effect rather than conventional displacement sensing.Type: ApplicationFiled: October 3, 2018Publication date: April 25, 2019Inventors: Gianluca Piazza, Mohamed Mahmoud, Ashraf Mahmoud, Lutong Cai, Msi Khan, Tamal Mukherjee, James Bain
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Publication number: 20190108982Abstract: Methods and apparatus for performing high energy atomic layer etching are provided herein. Methods include providing a substrate having a material to be etched, exposing a surface of the material to a modification gas to modify the surface and form a modified surface, and exposing the modified surface to an energetic particle to preferentially remove the modified surface relative to an underlying unmodified surface where the energetic particle has an ion energy sufficient to overcome an average surface binding energy of the underlying unmodified surface. The energy of the energetic particle used is very high; in some cases, the power applied to a bias used when exposing the modified surface to the energetic particle is at least 150 eV.Type: ApplicationFiled: October 1, 2018Publication date: April 11, 2019Inventors: Wenbing Yang, Samantha Tan, Tamal Mukherjee, Keren Jacobs Kanarik, Yang Pan