公开(公告)号：US20230303901A1

公开(公告)日：2023-09-28

申请号：US18187712

申请日：2023-03-22

Applicant: Nano and Advanced Materials Institute Limited

Inventor： Chi Ming LEUNG ,  Sze Chun YIU ,  Chi Hin WONG ,  Chi Ho KWOK ,  Chenmin LIU

IPC: C09K5/04 ,  H05K7/20

CPC classification number: C09K5/048 ,  H05K7/203 ,  H05K7/20327

Abstract: An immersion cooling system includes a fluid-retaining container having space for accommodating an electronic device. A heat transfer fluid is in contact with the electronic device. A heat exchanger contacts and condenses vapor from vaporization of the heat transfer fluid. The heat transfer fluid has a thermal conductivity higher than 0.08 W m−1K−1, a dielectric constant (Dk) 20-40 GHz less than 3.0, and a heat of vaporization higher than 150 kJ kg−1, with fire retarding features, compatibility with plastics, metals, rubbers and includes a partially fluorinated compound. The improved immersion cooling system includes fluids with increased thermal conductivity and heat of vaporization while reducing fluid density and maintaining the advantages of the fluid being non-flammable, having high electrical stability and a low dielectric constant.

公开(公告)号：US20230265066A1

公开(公告)日：2023-08-24

申请号：US18180149

申请日：2023-03-08

Applicant: Nano and Advanced Materials Institute Limited

Inventor： Chi Ming LEUNG ,  Chun Hei WONG ,  Chi Ho KWOK ,  Chenmin LIU

IPC: C07D311/92 ,  C09K9/02 ,  C07D311/94 ,  C07D491/052

CPC classification number: C07D311/92 ,  C09K9/02 ,  C07D311/94 ,  C07D491/052 ,  C09K2211/1018

Abstract: Provided herein are a series of water-soluble photochromic naphthopyran compounds, a mixture and a polymer thin film comprising the same, and applications thereof in photochromic materials, especially water-soluble photochromic material. The present photochromic naphthopyran compounds display excellent water solubility in neutral pH environment, rapid light response and fast thermal bleaching.