公开(公告)号：US10233087B2

公开(公告)日：2019-03-19

申请号：US14820411

申请日：2015-08-06

Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC ,  THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Marcus A. Worsley ,  Leta Woo ,  William Mickelson ,  Alex Zettl

IPC: C01B32/184 ,  C01B32/182

Abstract: Disclosed here is a composition comprising at least one graphene aerogel comprising a three-dimensional structure of graphene sheets, wherein the graphene sheets are covalently interconnected, and wherein the graphene aerogel is highly crystalline. Also described is a method for making a graphene aerogel, comprising preparing a mixture comprising a graphene oxide suspension and at least one catalyst; curing the reaction mixture to produce a wet gel; drying the wet gel to produce a dry gel; and pyrolyzing the dry gel at a temperature of 1500-3500° C. to produce the graphene aerogel.

公开(公告)号：US20170197832A1

公开(公告)日：2017-07-13

申请号：US15321177

申请日：2015-06-24

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Aidin Fathalizadeh ,  Thang Pham ,  William Mickelson ,  Alexander Zettl

IPC: C01B21/064 ,  B01J19/08

CPC classification number: C01B21/0641 ,  B01J19/08 ,  B01J2219/0879 ,  B01J2219/0894 ,  B82Y30/00 ,  B82Y40/00 ,  C01B21/064 ,  C01P2002/82 ,  C01P2004/03 ,  C01P2004/04 ,  C01P2004/13 ,  C01P2004/24 ,  C04B35/583 ,  C04B35/622 ,  C04B2235/5276 ,  C04B2235/5284 ,  C04B2235/5454 ,  C04B2235/767 ,  C04B2235/95 ,  Y10S977/762 ,  Y10S977/896

Abstract: This disclosure provides systems, methods, and apparatus related to boron nitride nanomaterials. In one aspect, a method includes generating a directed flow of plasma. A boron-containing species is introduced to the directed flow of the plasma. Boron nitride nanostructures are formed in a chamber. In another aspect, a method includes generating a directed flow of plasma using nitrogen gas. A boron-containing species is introduced to the directed flow of the plasma. The boron-containing species can consist of boron powder, boron nitride powder, and/or boron oxide powder. Boron nitride nanostructures are formed in a chamber, with a pressure in the chamber being about 3 atmospheres or greater.

公开(公告)号：US11345595B2

公开(公告)日：2022-05-31

申请号：US15321177

申请日：2015-06-24

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Aidin Fathalizadeh ,  Thang Pham ,  William Mickelson ,  Alexander Zettl

IPC: C01B21/064 ,  B82Y40/00 ,  C04B35/622 ,  C04B35/583 ,  B01J19/08 ,  B82Y30/00

Abstract: This disclosure provides systems, methods, and apparatus related to boron nitride nanomaterials. In one aspect, a method includes generating a directed flow of plasma. A boron-containing species is introduced to the directed flow of the plasma. Boron nitride nanostructures are formed in a chamber. In another aspect, a method includes generating a directed flow of plasma using nitrogen gas. A boron-containing species is introduced to the directed flow of the plasma. The boron-containing species can consist of boron powder, boron nitride powder, and/or boron oxide powder. Boron nitride nanostructures are formed in a chamber, with a pressure in the chamber being about 3 atmospheres or greater.

公开(公告)号：US12006210B2

公开(公告)日：2024-06-11

申请号：US17661805

申请日：2022-05-03

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Aidin Fathalizadeh ,  Thang Pham ,  William Mickelson ,  Alexander Zettl

IPC: C01B21/064 ,  B01J19/08 ,  B82Y40/00 ,  C04B35/583 ,  C04B35/622 ,  B82Y30/00

CPC classification number: C01B21/0641 ,  B01J19/08 ,  B82Y40/00 ,  C01B21/064 ,  C04B35/583 ,  C04B35/622 ,  B01J2219/0879 ,  B01J2219/0894 ,  B82Y30/00 ,  C01P2002/82 ,  C01P2004/03 ,  C01P2004/04 ,  C01P2004/13 ,  C01P2004/24 ,  C04B2235/5276 ,  C04B2235/5284 ,  C04B2235/5454 ,  C04B2235/767 ,  C04B2235/95 ,  Y10S977/762 ,  Y10S977/896

Abstract: This disclosure provides systems, methods, and apparatus related to boron nitride nanomaterials. In one aspect, a method includes generating a directed flow of plasma. A boron-containing species is introduced to the directed flow of the plasma. Boron nitride nanostructures are formed in a chamber. In another aspect, a method includes generating a directed flow of plasma using nitrogen gas. A boron-containing species is introduced to the directed flow of the plasma. The boron-containing species can consist of boron powder, boron nitride powder, and/or boron oxide powder. Boron nitride nanostructures are formed in a chamber, with a pressure in the chamber being about 3 atmospheres or greater.

公开(公告)号：US20180024089A1

公开(公告)日：2018-01-25

申请号：US15703752

申请日：2017-09-13

Applicant: The Regents of the University of California

Inventor： William Mickelson ,  Alex K. Zettl

IPC: G01N27/403 ,  G01N33/00 ,  G01N27/12

CPC classification number: G01N27/403 ,  G01N27/127 ,  G01N33/0044

Abstract: Gas sensors are provided. The gas sensors include a gas sensing element having metal oxide nanoparticles and a thin-film heating element. Systems that include the gas sensors, as well as methods of using the gas sensors, are also provided. Embodiments of the present disclosure find use in a variety of different applications, including detecting whether an analyte is present in a gaseous sample.

公开(公告)号：US20140138259A1

公开(公告)日：2014-05-22

申请号：US14045711

申请日：2013-10-03

Applicant: The Regents of the University of California

Inventor： William Mickelson ,  Alex Zettl

IPC: G01N27/403

CPC classification number: G01N27/403 ,  G01N27/127 ,  G01N33/0044

Abstract: Gas sensors are provided. The gas sensors include a gas sensing element having metal oxide nanoparticles and a thin-film heating element. Systems that include the gas sensors, as well as methods of using the gas sensors, are also provided. Embodiments of the present disclosure find use in a variety of different applications, including detecting whether an analyte is present in a gaseous sample.

Abstract translation: 提供气体传感器。 气体传感器包括具有金属氧化物纳米颗粒的气体感测元件和薄膜加热元件。 还提供了包括气体传感器的系统以及使用气体传感器的方法。 本公开的实施方案可用于各种不同的应用，包括检测分析物是否存在于气态样品中。

公开(公告)号：US09840414B2

公开(公告)日：2017-12-12

申请号：US15408297

申请日：2017-01-17

Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC ,  THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Alexander K. Zettl ,  Michael Rousseas ,  Anna P. Goldstein ,  William Mickelson ,  Marcus A. Worsley ,  Leta Woo

IPC: C01B21/06 ,  C01B21/064

CPC classification number: C01B21/0645 ,  C01B21/064 ,  C01P2002/04 ,  C01P2002/76 ,  C01P2002/78 ,  C01P2002/82 ,  C01P2004/02 ,  C01P2004/03 ,  C01P2004/04 ,  C01P2004/61 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/16 ,  C01P2006/60 ,  C04B35/5831 ,  C04B2235/3409 ,  C04B2235/46 ,  C04B2235/656 ,  C04B2235/761 ,  C04B2235/80

Abstract: This disclosure provides methods and materials related to boron nitride aerogels. For example, one aspect relates to a method for making an aerogel comprising boron nitride, comprising: (a) providing boron oxide and an aerogel comprising carbon; (b) heating the boron oxide to melt the boron oxide and heating the aerogel; (c) mixing a nitrogen-containing gas with boron oxide vapor from molten boron oxide; and (d) converting at least a portion of the carbon to boron nitride to obtain the aerogel comprising boron nitride. Another aspect relates to a method for making an aerogel comprising boron nitride, comprising heating boron oxide and an aerogel comprising carbon under flow of a nitrogen-containing gas, wherein boron oxide vapor and the nitrogen-containing gas convert at least a portion of the carbon to boron nitride to obtain the aerogel comprising boron nitride.

公开(公告)号：US20170297915A1

公开(公告)日：2017-10-19

申请号：US15408297

申请日：2017-01-17

Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC ,  THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Alexander K. Zettl ,  Michael Rousseas ,  Anna P. Goldstein ,  William Mickelson ,  Marcus A. Worsley ,  Leta Woo

IPC: C01B21/064 ,  C04B35/5831

CPC classification number: C01B21/0645 ,  C01B21/064 ,  C01P2002/04 ,  C01P2002/76 ,  C01P2002/78 ,  C01P2002/82 ,  C01P2004/02 ,  C01P2004/03 ,  C01P2004/04 ,  C01P2004/61 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/16 ,  C01P2006/60 ,  C04B35/5831 ,  C04B2235/3409 ,  C04B2235/46 ,  C04B2235/656 ,  C04B2235/761 ,  C04B2235/80

Abstract: This disclosure provides methods and materials related to boron nitride aerogels. For example, one aspect relates to a method for making an aerogel comprising boron nitride, comprising: (a) providing boron oxide and an aerogel comprising carbon; (b) heating the boron oxide to melt the boron oxide and heating the aerogel; (c) mixing a nitrogen-containing gas with boron oxide vapor from molten boron oxide; and (d) converting at least a portion of the carbon to boron nitride to obtain the aerogel comprising boron nitride. Another aspect relates to a method for making an aerogel comprising boron nitride, comprising heating boron oxide and an aerogel comprising carbon under flow of a nitrogen-containing gas, wherein boron oxide vapor and the nitrogen-containing gas convert at least a portion of the carbon to boron nitride to obtain the aerogel comprising boron nitride.

公开(公告)号：US09611146B2

公开(公告)日：2017-04-04

申请号：US14320300

申请日：2014-06-30

Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC ,  THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Alexander K. Zettl ,  Michael Rousseas ,  Anna P. Goldstein ,  William Mickelson ,  Marcus A. Worsley ,  Leta Woo

IPC: C01B21/064 ,  C04B35/5831

CPC classification number: C01B21/0645 ,  C01B21/064 ,  C01P2002/04 ,  C01P2002/76 ,  C01P2002/78 ,  C01P2002/82 ,  C01P2004/02 ,  C01P2004/03 ,  C01P2004/04 ,  C01P2004/61 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/16 ,  C01P2006/60 ,  C04B35/5831 ,  C04B2235/3409 ,  C04B2235/46 ,  C04B2235/656 ,  C04B2235/761 ,  C04B2235/80

Abstract: This disclosure provides methods and materials related to boron nitride aerogels. In one aspect, a material comprises an aerogel comprising boron nitride. The boron nitride has an ordered crystalline structure. The ordered crystalline structure may include atomic layers of hexagonal boron nitride lying on top of one another, with atoms contained in a first layer being superimposed on atoms contained in a second layer.

公开(公告)号：US20170036915A1

公开(公告)日：2017-02-09

申请号：US14820411

申请日：2015-08-06

Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC ,  THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Marcus A. Worsley ,  Leta Woo ,  William Mickelson ,  Alex Zettl

IPC: C01B31/04

CPC classification number: C01B32/184 ,  C01B32/182 ,  C01B2204/22 ,  C01B2204/32 ,  C01P2002/82 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/14 ,  C01P2006/40

Abstract: Disclosed here is a composition comprising at least one graphene aerogel comprising a three-dimensional structure of graphene sheets, wherein the graphene sheets are covalently interconnected, and wherein the graphene aerogel is highly crystalline. Also described is a method for making a graphene aerogel, comprising preparing a mixture comprising a graphene oxide suspension and at least one catalyst; curing the reaction mixture to produce a wet gel; drying the wet gel to produce a dry gel; and pyrolyzing the dry gel at a temperature of 1500-3500° C. to produce the graphene aerogel.

Abstract translation: 这里公开了一种组合物，其包含至少一个包含石墨烯片的三维结构的石墨烯气凝胶，其中所述石墨烯片是共价互连的，并且其中所述石墨烯气凝胶是高度结晶的。 还描述了一种制备石墨烯气凝胶的方法，包括制备包含石墨烯氧化物悬浮液和至少一种催化剂的混合物; 固化反应混合物以产生湿凝胶; 干燥湿凝胶以产生干凝胶; 并在1500-3500℃的温度下热解干凝胶以产生石墨烯气凝胶。