公开(公告)号：US20220177388A1

公开(公告)日：2022-06-09

申请号：US17598034

申请日：2020-03-16

Applicant: DAICEL CORPORATION

Inventor： Tomoaki MAHIKO ,  Yuto MAKINO ,  Akihiko TSURUI ,  Ming LIU ,  Masahiro NISHIKAWA

IPC: C06B25/00 ,  C01B32/15 ,  C01B32/26

Abstract: The present invention is to provide an explosive composition comprising at least one explosive and at least one heteroatom compound, the heteroatom compound comprising at least one heteroatom selected from the group consisting of B, P, Si, S, Cr, Sn, Al, Ge, Li, Na, K, Cs, Mg, Ca, Sr, Ba, Ti, Zr, V, Nb, Ta, Mo, W, Mn, Ni, Cu, Ag, Cd, Hg, Ga, In, Tl, As, Sb, Bi, Se, Te, Co, Xe, F, Y, and lanthanoids.

公开(公告)号：US20250002355A1

公开(公告)日：2025-01-02

申请号：US18580434

申请日：2022-08-02

Applicant: DAICEL CORPORATION

Inventor： Akihiko TSURUI ,  Tomoaki MAHIKO ,  Masahiro NISHIKAWA ,  Ming LIU ,  Yuto MAKINO ,  Taro YOSHIKAWA

IPC: C01B32/26 ,  B82Y30/00 ,  B82Y40/00

Abstract: The present invention provides heteroatom-doped nanodiamond particles having a fluorescence emission peak derived from heteroatom-vacancy (Heteroatom-V) centers and satisfying conditions consisting of: (i) when 1 μL of a 1 mass % aqueous suspension of the heteroatom-doped nanodiamond particles is added dropwise onto a glass substrate, and fluorescence spectra are acquired for 101×101 spots using a microscopic Raman apparatus at a spatial resolution of 1 μm and in a sample range of 100 μm×100 μm, the percentage of the number of bright spots emitting fluorescence with a ZPL peak at ZPL±X nm (0≤X≤5) of the Heteroatom-V centers is 50% or greater; and (ii) an average size of primary particles is from 2 to 70 nm.

公开(公告)号：US20240044722A1

公开(公告)日：2024-02-08

申请号：US18265455

申请日：2021-12-23

Applicant: DAICEL CORPORATION ,  Kyoto University

Inventor： Masahiro NISHIKAWA ,  Ming LIU ,  Norikazu MIZUOCHI ,  Izuru OHKI ,  Masanori FUJIWARA

IPC: G01K11/20 ,  G01N25/20

CPC classification number: G01K11/20 ,  G01N25/20

Abstract: The present invention provides a temperature-sensitive probe containing a group 14 element-doped nanodiamond having an average particle size of 1 to 100 nm and including SiV centers.

公开(公告)号：US20240002237A1

公开(公告)日：2024-01-04

申请号：US18038158

申请日：2021-12-22

Applicant: DAICEL CORPORATION

Inventor： Masahiro NISHIKAWA ,  Ming LIU

IPC: C01B32/28 ,  B01D21/26

CPC classification number: C01B32/28 ,  B01D21/262 ,  C01P2004/04

Abstract: Provided is a method for producing a nanodiamond dispersion composition, the method capable of easily producing a nanodiamond dispersion composition having the reduced number of coarse particles mixed therein. Another object of the present disclosure is to provide a nanodiamond dispersion composition having the reduced number of coarse particles mixed therein, and containing nanodiamond particles having an organic part. A method for producing a nanodiamond dispersion composition including subjecting a crude nanodiamond dispersion composition containing nanodiamond particles and a dispersion medium to centrifugation, separating a supernatant obtained in the centrifugation into a plurality of layers to obtain nanodiamond dispersion compositions each corresponding to each of the plurality of layers, and observing one or more of the nanodiamond dispersion compositions obtained in the separating, using a microscope, to obtain a classified and purified nanodiamond dispersion composition in which the number of nanodiamond particles having a particle size of 20 nm or greater in a microscopic field of view of 1 μm2 is smaller than that in the crude nanodiamond dispersion composition.

公开(公告)号：US20220331766A1

公开(公告)日：2022-10-20

申请号：US17598110

申请日：2020-03-16

Applicant: DAICEL CORPORATION

Inventor： Tomoaki MAHIKO ,  Yuto MAKINO ,  Akihiko TSURUI ,  Ming LIU ,  Masahiro NISHIKAWA

IPC: B01J3/08 ,  B01J3/06 ,  C01B32/15 ,  C01B32/28

Abstract: The present invention is to provide a method for producing nanodiamonds doped with a Group 14 element, the method comprising: detonating by exploding an explosive composition containing at least one explosive and at least one Group 14 element compound in a sealed container to obtain nanodiamonds doped with at least one Group 14 element selected from the group consisting of Si, Ge, Sn, and Pb, and removing the Group 14 element and/or oxide thereof by subjecting the nanodiamonds doped with a Group 14 element to an alkali treatment.

公开(公告)号：US20210395607A1

公开(公告)日：2021-12-23

申请号：US17290105

申请日：2019-10-29

Applicant: DAICEL CORPORATION ,  KYUSHU INSTITUTE OF TECHNOLOGY

Inventor： Motoi NAKAO ,  Shinji NAGAMACHI ,  Masahiro NISHIKAWA ,  Ming LIU

IPC: C09K11/65 ,  C01B32/26 ,  C01B32/28 ,  C30B25/18 ,  C30B33/04 ,  C30B29/04 ,  C23C16/27 ,  C23C16/02 ,  C23C16/56

Abstract: The present invention provides a fluorescent diamond containing an MV center emitting fluorescence at a concentration of 1×1014/cm3 or higher, where M represents a metal or metalloid, and V represents a vacancy.

公开(公告)号：US20210371740A1

公开(公告)日：2021-12-02

申请号：US17220844

申请日：2021-04-01

Applicant: DAICEL CORPORATION

Inventor： Ming LIU ,  Masahiro NISHIKAWA ,  Yoshihiro INAMOTO ,  Maki KISHIMOTO

IPC: C09K11/65 ,  C01B32/26 ,  C01B32/28

Abstract: A method of producing a fluorescent nanodiamond exhibiting a zero phonon line (ZPL) for NV0 and/or NV− on its the fluorescence emission wavelength spectrum. The method includes a detonation step of exploding at least one type of explosive in an airtight container to obtain a nanodiamond raw material, a first annealing step of annealing, at a temperature from 1000° C. to 1600° C., the nanodiamond raw material or a nanodiamond which is obtained by removing sp2 carbon through strong acid treatment, ozone treatment, or gas-phase oxidation of the nanodiamond raw material, a vacancy forming step of creating vacancies on the nanodiamond by irradiating the nanodiamond with an ion beam or an electron beam after the first annealing step, and a second annealing step of annealing, at a temperature from 600° C. to 900° C., the nanodiamond containing vacancies to form Nitrogen-Vacancy (NV) centers.

公开(公告)号：US20220185676A1

公开(公告)日：2022-06-16

申请号：US17598001

申请日：2020-03-16

Applicant: DAICEL CORPORATION

Inventor： Tomoaki MAHIKO ,  Yuto MAKINO ,  Akihiko TSURUI ,  Ming LIU ,  Masahiro NISHIKAWA

IPC: C01B32/26 ,  C09K11/59 ,  C09K11/63 ,  C09K11/70

Abstract: The present invention is to provide a heteroatom-doped nanodiamond, the heteroatom-doped nanodiamond being doped with at least one heteroatom, the heteroatom-doped nanodiamond satisfying criteria (i) and/or (ii) below: (i) a BET specific surface area being from 20 to 900 m2/g, and (ii) an average size of primary particles being from 2 to 70 nm.

公开(公告)号：US20190218475A1

公开(公告)日：2019-07-18

申请号：US16301932

申请日：2017-02-21

Applicant: DAICEL CORPORATION ,  TOHOKU UNIVERSITY

Inventor： Norihiro KIMOTO ,  Hisayoshi ITO ,  Ming LIU ,  Koshi ADACHI ,  Hirotsuna SATO

IPC: C10M173/02 ,  C10M103/02

CPC classification number: C10M173/02 ,  C10M103/02 ,  C10M2201/02 ,  C10M2201/041 ,  C10N2220/082 ,  C10N2230/06 ,  C10N2250/12

Abstract: A water lubricant composition (10) of the present invention contains water (11) as a lubricating base material and ND particles (12), which are hydrogen-reduced nanodiamond particles. The content of the water (11) in the water lubricant composition (10) is, for example, 90% by mass or more. The content of the ND particles (12) in the water lubricant composition (10) is, for example, 0.1% by mass or less. The water lubricant composition (10) is suitable for achieving low friction in water lubrication. A water lubricating system of the present invention includes the water lubricant composition (10) which is being used for the lubrication of a SiC member and/or a SiO2 member.

公开(公告)号：US20240351885A1

公开(公告)日：2024-10-24

申请号：US18684358

申请日：2022-08-16

Applicant: DAICEL CORPORATION

Inventor： Ming LIU ,  Taro YOSHIKAWA ,  Masahiro NISHIKAWA ,  Naoki TAKAO

IPC: C01B32/28

CPC classification number: C01B32/28 ,  C01P2002/01 ,  C01P2004/04 ,  C01P2004/51 ,  C01P2004/64 ,  C01P2006/22 ,  C01P2006/40

Abstract: Provided is a nanodiamond aqueous dispersion in which nanodiamond particles can be present in water in a highly dispersed state. The nanodiamond aqueous dispersion includes water and nanodiamond particles dispersed in the water. A content of heavy metal is 1 part by mass or less with respect to 100 parts by mass of the nanodiamond particles. A horizontal projection area of the nanodiamond particles calculated from an analysis image obtained by low-temperature electron microscopy satisfies at least one condition selected from the group consisting of (a) to (d): (a) a percentage of 100 nm2 or more is 20% or less, (b) a percentage of 80 nm2 or more is 24% or less, (c) a percentage of 50 nm2 or more is 30% or less, (d) a percentage of 30 nm2 or more is 39% or less.