Patents by Inventor Anindarupa Chunder
Anindarupa Chunder 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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Patent number: 10118989Abstract: Block polymers are formed by ring opening polymerization (ROP) of a cyclic carbonate monomer using a polymeric initiator for the ROP that comprises repeating functionalized ethylene units. The block polymers are free of, or substantially free of, any polymer having a chemical structure that does not comprise the polymer backbone of the polymeric initiator. The block polymers are capable of directed self-assembly.Type: GrantFiled: January 3, 2017Date of Patent: November 6, 2018Assignee: International Business Machines CorporationInventors: Anindarupa Chunder, Daniel P. Sanders, Ankit Vora
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Patent number: 10066040Abstract: A film layer comprising a high-chi (?) block copolymer for self-assembly and a surface active polymer (SAP) was prepared on a substrate surface that was neutral wetting to the domains of the self-assembled block copolymer. The block copolymer comprises at least one polycarbonate block and at least one other block (e.g., a styrene-based block). The SAP comprises a hydrophobic fluorinated first repeat unit and a non-fluorinated second repeat unit bearing at least one pendent OH group present as an alcohol or acid (e.g., carboxylic acid). The film layer, whose top surface has contact with an atmosphere, self-assembles to form a lamellar or cylindrical domain pattern having perpendicular orientation with respect to the underlying surface. Other morphologies (e.g., islands and holes of height 1.0Lo) were obtained with films lacking the SAP. The SAP is preferentially miscible with, and lowers the surface energy of, the domain comprising the polycarbonate block.Type: GrantFiled: August 29, 2016Date of Patent: September 4, 2018Assignee: International Business Machines CorporationInventors: Joy Cheng, Anindarupa Chunder, Daniel P. Sanders, Ankit Vora
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Patent number: 10040879Abstract: A film layer comprising a high-chi (?) block copolymer for self-assembly and a hexafluoroalcohol-containing surface active polymer (SAP) was prepared on a substrate surface that was neutral wetting to the domains of the self-assembled block copolymer. The block copolymer comprises at least one polycarbonate block and at least one other block (e.g., a substituted or unsubstituted styrene-based block). The film layer, whose top surface has contact with an atmosphere, self-assembles to form a lamellar or cylindrical domain pattern having perpendicular orientation with respect to the underlying surface. Other morphologies (e.g., islands and holes of height 1.0 Lo) were obtained with films lacking the SAP. The SAP is preferentially miscible with, and lowers the surface energy of, the domain comprising the polycarbonate block.Type: GrantFiled: November 21, 2016Date of Patent: August 7, 2018Assignee: International Business Machines CorporationInventors: Joy Cheng, Anindarupa Chunder, Ankit Vora
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Publication number: 20170114183Abstract: Block polymers are formed by ring opening polymerization (ROP) of a cyclic carbonate monomer using a polymeric initiator for the ROP that comprises repeating functionalized ethylene units. The block polymers are free of, or substantially free of, any polymer having a chemical structure that does not comprise the polymer backbone of the polymeric initiator. The block polymers are capable of directed self-assembly.Type: ApplicationFiled: January 3, 2017Publication date: April 27, 2017Inventors: Anindarupa Chunder, Daniel P. Sanders, Ankit Vora
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Publication number: 20170066853Abstract: A film layer comprising a high-chi (?) block copolymer for self-assembly and a hexafluoroalcohol-containing surface active polymer (SAP) was prepared on a substrate surface that was neutral wetting to the domains of the self-assembled block copolymer. The block copolymer comprises at least one polycarbonate block and at least one other block (e.g., a substituted or unsubstituted styrene-based block). The film layer, whose top surface has contact with an atmosphere, self-assembles to form a lamellar or cylindrical domain pattern having perpendicular orientation with respect to the underlying surface. Other morphologies (e.g., islands and holes of height 1.0 Lo) were obtained with films lacking the SAP. The SAP is preferentially miscible with, and lowers the surface energy of, the domain comprising the polycarbonate block.Type: ApplicationFiled: November 21, 2016Publication date: March 9, 2017Inventors: Joy Cheng, Anindarupa Chunder, Ankit Vora
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Patent number: 9574107Abstract: A film layer comprising a high-chi (?) block copolymer for self-assembly and a hexafluoroalcohol-containing surface active polymer (SAP) was prepared on a substrate surface that was neutral wetting to the domains of the self-assembled block copolymer. The block copolymer comprises at least one polycarbonate block and at least one other block (e.g., a substituted or unsubstituted styrene-based block). The film layer, whose top surface has contact with an atmosphere, self-assembles to form a lamellar or cylindrical domain pattern having perpendicular orientation with respect to the underlying surface. Other morphologies (e.g., islands and holes of height 1.0Lo) were obtained with films lacking the SAP. The SAP is preferentially miscible with, and lowers the surface energy of, the domain comprising the polycarbonate block.Type: GrantFiled: February 16, 2015Date of Patent: February 21, 2017Assignee: International Business Machines CorporationInventors: Joy Cheng, Anindarupa Chunder, Daniel P. Sanders, Melia Tjio, Ankit Vora
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Patent number: 9562127Abstract: Block polymers are formed by ring opening polymerization (ROP) of a cyclic carbonate monomer using a polymeric initiator for the ROP that comprises repeating functionalized ethylene units. The block polymers are free of, or substantially free of, any polymer having a chemical structure that does not comprise the polymer backbone of the polymeric initiator. The block polymers are capable of directed self-assembly.Type: GrantFiled: May 16, 2014Date of Patent: February 7, 2017Assignee: International Business Machines CorporationInventors: Joy Cheng, Anindarupa Chunder, Daniel P. Sanders, Melia Tjio, Ankit Vora
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Patent number: 9556353Abstract: An orientation control layer (OCL) for self-assembly of block copolymers comprises a random copolymer comprising a first repeat unit having an ethylenic backbone functional group and a side chain aromatic ring, a second repeat unit comprising an ethylenic backbone functional group and a side chain polycarbonate, and a third repeat unit comprising an ethylenic backbone functional group and a side chain ester or amide bearing an active group capable of forming a covalent bond with a substrate surface (e.g., a silicon wafer). The OCLs are neutral wetting to block copolymers having a high Flory-Huggins interaction parameter chi (?) (“high-chi” block copolymers) such as a block copolymer comprising a polystyrene block and a polycarbonate block. The neutral OCL wetting properties allow for formation of lamellar domain patterns of the self-assembled high-chi block copolymers to be oriented perpendicular to the OCL surface.Type: GrantFiled: October 29, 2014Date of Patent: January 31, 2017Assignee: International Business Machines CorporationInventors: Joy Cheng, Anindarupa Chunder, Melia Tjio, Ankit Vora
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Publication number: 20160362513Abstract: A film layer comprising a high-chi (?) block copolymer for self-assembly and a surface active polymer (SAP) was prepared on a substrate surface that was neutral wetting to the domains of the self-assembled block copolymer. The block copolymer comprises at least one polycarbonate block and at least one other block (e.g., a styrene-based block). The SAP comprises a hydrophobic fluorinated first repeat unit and a non-fluorinated second repeat unit bearing at least one pendent OH group present as an alcohol or acid (e.g., carboxylic acid). The film layer, whose top surface has contact with an atmosphere, self-assembles to form a lamellar or cylindrical domain pattern having perpendicular orientation with respect to the underlying surface. Other morphologies (e.g., islands and holes of height 1.0Lo) were obtained with films lacking the SAP. The SAP is preferentially miscible with, and lowers the surface energy of, the domain comprising the polycarbonate block.Type: ApplicationFiled: August 29, 2016Publication date: December 15, 2016Inventors: Joy Cheng, Anindarupa Chunder, Daniel P. Sanders, Ankit Vora
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Publication number: 20160304740Abstract: A film layer comprising a high-chi (?) block copolymer for self-assembly and a surface active polymer (SAP) was prepared on a substrate surface that was neutral wetting to the domains of the self-assembled block copolymer. The block copolymer comprises at least one polycarbonate block and at least one other block (e.g., a styrene-based block). The SAP comprises a hydrophobic fluorinated first repeat unit and a non-fluorinated second repeat unit bearing at least one pendent OH group present as an alcohol or acid (e.g., carboxylic acid). The film layer, whose top surface has contact with an atmosphere, self-assembles to form a lamellar or cylindrical domain pattern having perpendicular orientation with respect to the underlying surface. Other morphologies (e.g., islands and holes of height 1.0Lo) were obtained with films lacking the SAP. The SAP is preferentially miscible with, and lowers the surface energy of, the domain comprising the polycarbonate block.Type: ApplicationFiled: April 15, 2015Publication date: October 20, 2016Inventors: Joy Cheng, Anindarupa Chunder, Daniel P. Sanders, Melia Tjio, Ankit Vora
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Patent number: 9458353Abstract: A film layer comprising a high-chi (?) block copolymer for self-assembly and a surface active polymer (SAP) was prepared on a substrate surface that was neutral wetting to the domains of the self-assembled block copolymer. The block copolymer comprises at least one polycarbonate block and at least one other block (e.g., a styrene-based block). The SAP comprises a hydrophobic fluorinated first repeat unit and a non-fluorinated second repeat unit bearing at least one pendent OH group present as an alcohol or acid (e.g., carboxylic acid). The film layer, whose top surface has contact with an atmosphere, self-assembles to form a lamellar or cylindrical domain pattern having perpendicular orientation with respect to the underlying surface. Other morphologies (e.g., islands and holes of height 1.0Lo) were obtained with films lacking the SAP. The SAP is preferentially miscible with, and lowers the surface energy of, the domain comprising the polycarbonate block.Type: GrantFiled: April 15, 2015Date of Patent: October 4, 2016Assignee: International Business Machines CorporationInventors: Joy Cheng, Anindarupa Chunder, Daniel P. Sanders, Melia Tjio, Ankit Vora
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Publication number: 20160237307Abstract: A film layer comprising a high-chi (?) block copolymer for self-assembly and a hexafluoroalcohol-containing surface active polymer (SAP) was prepared on a substrate surface that was neutral wetting to the domains of the self-assembled block copolymer. The block copolymer comprises at least one polycarbonate block and at least one other block (e.g., a substituted or unsubstituted styrene-based block). The film layer, whose top surface has contact with an atmosphere, self-assembles to form a lamellar or cylindrical domain pattern having perpendicular orientation with respect to the underlying surface. Other morphologies (e.g., islands and holes of height 1.0Lo) were obtained with films lacking the SAP. The SAP is preferentially miscible with, and lowers the surface energy of, the domain comprising the polycarbonate block.Type: ApplicationFiled: February 16, 2015Publication date: August 18, 2016Inventors: Joy Cheng, Anindarupa Chunder, Daniel P. Sanders, Melia Tjio, Ankit Vora
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Publication number: 20160122571Abstract: An orientation control layer (OCL) for self-assembly of block copolymers comprises a random copolymer comprising a first repeat unit having an ethylenic backbone functional group and a side chain aromatic ring, a second repeat unit comprising an ethylenic backbone functional group and a side chain polycarbonate, and a third repeat unit comprising an ethylenic backbone functional group and a side chain ester or amide bearing an active group capable of forming a covalent bond with a substrate surface (e.g., a silicon wafer). The OCLs are neutral wetting to block copolymers having a high Flory-Huggins interaction parameter chi (?) (“high-chi” block copolymers) such as a block copolymer comprising a polystyrene block and a polycarbonate block. The neutral OCL wetting properties allow for formation of lamellar domain patterns of the self-assembled high-chi block copolymers to be oriented perpendicular to the OCL surface.Type: ApplicationFiled: October 29, 2014Publication date: May 5, 2016Inventors: Joy Cheng, Anindarupa Chunder, Melia Tjio, Ankit Vora
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Publication number: 20150329664Abstract: Block polymers are formed by ring opening polymerization (ROP) of a cyclic carbonate monomer using a polymeric initiator for the ROP that comprises repeating functionalized ethylene units. The block polymers are free of, or substantially free of, any polymer having a chemical structure that does not comprise the polymer backbone of the polymeric initiator. The block polymers are capable of directed self-assembly.Type: ApplicationFiled: May 16, 2014Publication date: November 19, 2015Applicant: International Business Machines CorporationInventors: Joy Cheng, Anindarupa Chunder, Daniel P. Sanders, Melia Tjio, Ankit Vora
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Patent number: 8790610Abstract: A method of forming composite materials includes dispersing a conjugated material, a solvent for the conjugated material, and a plurality of carbon nanotubes (CNTs) or graphene including structures having an outer surface to form a dispersion. The solvent is evaporated from the dispersion to yield a CNT or graphene composite including a plurality of crystalline supramolecular structures having the conjugated material non-covalently secured to the outer surface of the CNT or the graphene including structure. The supramolecular structures have an average length which extends outward in a length direction from the outer surface of the CNT or graphene including structure, where the average length is greater than an average width of the supramolecular structures.Type: GrantFiled: November 12, 2013Date of Patent: July 29, 2014Assignee: University of Central Florida Research Foundation, Inc.Inventors: Lei Zhai, Jianhua Liu, Jianhua Zou, Anindarupa Chunder
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Publication number: 20140072704Abstract: A method of forming composite materials includes dispersing a conjugated material, a solvent for the conjugated material, and a plurality of carbon nanotubes (CNTs) or graphene including structures having an outer surface to form a dispersion. The solvent is evaporated from the dispersion to yield a CNT or graphene composite including a plurality of crystalline supramolecular structures having the conjugated material non-covalently secured to the outer surface of the CNT or the graphene including structure. The supramolecular structures have an average length which extends outward in a length direction from the outer surface of the CNT or graphene including structure, where the average length is greater than an average width of the supramolecular structures.Type: ApplicationFiled: November 12, 2013Publication date: March 13, 2014Applicant: University of Central Florida Research Foundation, Inc.Inventors: LEI ZHAI, JIANHUA LIU, JIANHUA ZOU, ANINDARUPA CHUNDER
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Patent number: 8613898Abstract: A composition of matter includes at least one carbon nanotube (CNT) or a graphene type structure having an outer surface, and a plurality of crystalline polymer supramolecular structures that include a conjugated polymer that are non-covalently secured to the outer surface of the CNTs or the graphene type structure. The conjugated polymer can be a conjugated homopolymer or a block copolymer including at least one conjugated block. The supramolecular structures extend outward from the outer surface of the CNTs or graphene type structures.Type: GrantFiled: January 27, 2011Date of Patent: December 24, 2013Assignee: University of Central Florida Research Foundation, Inc.Inventors: Lei Zhai, Jianhua Liu, Jianhua Zou, Anindarupa Chunder
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Publication number: 20110180140Abstract: A composition of matter includes at least one carbon nanotube (CNT) or a graphene type structure having an outer surface, and a plurality of crystalline polymer supramolecular structures that include a conjugated polymer that are non-covalently secured to the outer surface of the CNTs or the graphene type structure. The conjugated polymer can be a conjugated homopolymer or a block copolymer including at least one conjugated block. The supramolecular structures extend outward from the outer surface of the CNTs or graphene type structures.Type: ApplicationFiled: January 27, 2011Publication date: July 28, 2011Applicant: University of Central Florida Research Foundation, Inc.Inventors: Lei Zhai, Jianhua Liu, Jianhua Zou, Anindarupa Chunder