Patents by Inventor Soumendra N. Barman

Soumendra N. Barman 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).

  • Patent number: 10727080
    Abstract: Methods are described herein for etching tantalum-containing films with various potential additives while still retaining other desirable patterned substrate portions. The methods include exposing a tantalum-containing film to a chlorine-containing precursor (e.g. Cl2) with a concurrent plasma. The plasma-excited chlorine-containing precursor selectively etches the tantalum-containing film and other industrially-desirable additives. Chlorine is then removed from the substrate processing region. A hydrogen-containing precursor (e.g. H2) is delivered to the substrate processing region (also with plasma excitation) to produce a relatively even and residue-free tantalum-containing surface. The methods presented remove tantalum while retaining materials elsewhere on the patterned substrate.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: July 28, 2020
    Assignee: Applied Materials, Inc.
    Inventors: Xikun Wang, Naomi Yoshida, Soumendra N. Barman, Nitin K. Ingle
  • Publication number: 20190013211
    Abstract: Methods are described herein for etching tantalum-containing films with various potential additives while still retaining other desirable patterned substrate portions. The methods include exposing a tantalum-containing film to a chlorine-containing precursor (e.g. Cl2) with a concurrent plasma. The plasma-excited chlorine-containing precursor selectively etches the tantalum-containing film and other industrially-desirable additives. Chlorine is then removed from the substrate processing region. A hydrogen-containing precursor (e.g. H2) is delivered to the substrate processing region (also with plasma excitation) to produce a relatively even and residue-free tantalum-containing surface. The methods presented remove tantalum while retaining materials elsewhere on the patterned substrate.
    Type: Application
    Filed: May 7, 2018
    Publication date: January 10, 2019
    Applicant: Applied Materials, Inc.
    Inventors: Xikun Wang, Naomi Yoshida, Soumendra N. Barman, Nitin K. Ingle
  • Patent number: 9417515
    Abstract: An extreme ultraviolet mirror or blank production system includes: a first deposition system for depositing a planarization layer over a semiconductor substrate; a second deposition system for depositing an ultra-smooth layer over the planarization layer, the ultra-smooth layer having reorganized molecules; and a third deposition system for depositing a multi-layer stack over the ultra-smooth layer. The extreme ultraviolet blank includes: a substrate; a planarization layer over the substrate; an ultra-smooth layer over the planarization layer, the ultra-smooth layer having reorganized molecules; a multi-layer stack; and capping layers over the multi-layer stack. An extreme ultraviolet lithography system includes: an extreme ultraviolet light source; a mirror for directing light from the extreme ultraviolet light source; a reticle stage for placing an extreme ultraviolet mask blank with a planarization layer and an ultra-smooth layer over the planarization layer; and a wafer stage for placing a wafer.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: August 16, 2016
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Soumendra N. Barman, Cara Beasley, Abhijit Basu Mallick, Ralf Hofmann, Nitin K. Ingle
  • Patent number: 9085458
    Abstract: Nanotube electronic devices exhibit selective affinity to disparate nanotube types. According to an example embodiment, a semiconductor device exhibits a treated substrate that selectively interacts (e.g., chemically) with nanotubes of a first type, relative to nanotubes of a second type, the respective types including semiconducting-type and metallic-type nanotubes. The selective interaction is used to set device configuration characteristics based upon the nanotube type. This selective-interaction approach can be used to set the type, and/or characteristics of nanotubes in the device.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: July 21, 2015
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Zhenan Bao, Melburne Lemieux, Justin P. Opatkiewicz, Soumendra N. Barman
  • Publication number: 20140268083
    Abstract: An extreme ultraviolet mirror or blank production system includes: a first deposition system for depositing a planarization layer over a semiconductor substrate; a second deposition system for depositing an ultra-smooth layer over the planarization layer, the ultra-smooth layer having reorganized molecules; and a third deposition system for depositing a multi-layer stack over the ultra-smooth layer. The extreme ultraviolet blank includes: a substrate; a planarization layer over the substrate; an ultra-smooth layer over the planarization layer, the ultra-smooth layer having reorganized molecules; a multi-layer stack; and capping layers over the multi-layer stack. An extreme ultraviolet lithography system includes: an extreme ultraviolet light source; a mirror for directing light from the extreme ultraviolet light source; a reticle stage for placing an extreme ultraviolet mask blank with a planarization layer and an ultra-smooth layer over the planarization layer; and a wafer stage for placing a wafer.
    Type: Application
    Filed: December 23, 2013
    Publication date: September 18, 2014
    Applicant: Applied Materials, Inc.
    Inventors: Soumendra N. Barman, Cara Beasley, Abhijit Basu Mallick, Ralf Hofmann, Nitin K. Ingle
  • Publication number: 20120258569
    Abstract: Nanotube electronic devices exhibit selective affinity to disparate nanotube types. According to an example embodiment, a semiconductor device exhibits a treated substrate that selectively interacts (e.g., chemically) with nanotubes of a first type, relative to nanotubes of a second type, the respective types including semiconducting-type and metallic-type nanotubes. The selective interaction is used to set device configuration characteristics based upon the nanotube type. This selective-interaction approach can be used to set the type, and/or characteristics of nanotubes in the device.
    Type: Application
    Filed: June 19, 2012
    Publication date: October 11, 2012
    Inventors: Zhenan Bao, Melburne Lemieux, Justin P. Opatkiewicz, Soumendra N. Barman
  • Patent number: 8237155
    Abstract: Nanotube electronic devices exhibit selective affinity to disparate nanotube types. According to an example embodiment, a semiconductor device exhibits a treated substrate that selectively interacts (e.g., chemically) with nanotubes of a first type, relative to nanotubes of a second type, the respective types including semiconducting-type and metallic-type nanotubes. The selective interaction is used to set device configuration characteristics based upon the nanotube type. This selective-interaction approach can be used to set the type, and/or characteristics of nanotubes in the device.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: August 7, 2012
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Zhenan Bao, Melburne Lemieux, Justin P. Opatkiewicz, Soumendra N. Barman
  • Publication number: 20100001255
    Abstract: Nanotube electronic devices exhibit selective affinity to disparate nanotube types. According to an example embodiment, a semiconductor device exhibits a treated substrate that selectively interacts (e.g., chemically) with nanotubes of a first type, relative to nanotubes of a second type, the respective types including semiconducting-type and metallic-type nanotubes. The selective interaction is used to set device configuration characteristics based upon the nanotube type. This selective-interaction approach can be used to set the type, and/or characteristics of nanotubes in the device.
    Type: Application
    Filed: June 26, 2009
    Publication date: January 7, 2010
    Inventors: Zhenan Bao, Melburne Lemieux, Justin P. Opatkiewicz, Soumendra N. Barman