公开(公告)号：US20250104883A1

公开(公告)日：2025-03-27

申请号：US18917271

申请日：2024-10-16

Applicant: Massachusetts Institute of Technology

Inventor： Keith A. NELSON ,  Steven E. KOOI ,  Yun KAI

IPC: G21G1/12 ,  G21B1/03 ,  G21B1/13 ,  G21B1/19 ,  G21B1/23 ,  G21G1/00

Abstract: An apparatus and method produce, from a Gaussian laser pulse, a sequence of laser rings having a spatiotemporal configuration such that impingement of the laser rings on a surface of a nuclear material in a target assembly produces constructively interfering shock waves that converge on a focal region of the nuclear material, thereby producing sufficient pressures and temperatures to form tritium in the focal region. The temporal and/or spatial intervals between the concentric pulsed laser rings are adjusted to substantially match propagation times of impingement from one ring to the next in a shock propagation layer of the target assembly. A second laser or neutron tube may be used to create a cavitation bubble at the focus. In addition to the shock waves generated in the plane of the surface, through-plane shock waves can be generated to increase the overall shock pressure.

公开(公告)号：US20230163154A1

公开(公告)日：2023-05-25

申请号：US17990475

申请日：2022-11-18

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  MASSACHUSETTS INSTITUTE OF TECHNOLOGY ,  REGENTS OF THE UNIVERSITY OF MINNESOTA

Inventor： Chanwook BAIK ,  Jiaojian SHI ,  Keith A. NELSON ,  Sanghyun OH ,  Daehan YOO ,  Kyungsang CHO

IPC: H01L27/146

CPC classification number: H01L27/14665 ,  H01L27/14607

Abstract: A light conversion device includes a substrate; a plurality of metal patterns provided on the substrate and separated from each other; a metal layer provided on the substrate and surrounding each of the plurality of metal patterns; a first slit positioned between the metal layer and each of the plurality of metal patterns and surrounding each of the plurality of metal patterns; and a light-emitting layer filling the first slit. The first slit and the metal pattern surrounded by the first slit are concentric. The metal layer and the plurality of metal patterns are aligned so that a first electric field enhancement occurs when a wave belonging to an invisible light band is incident to the first slit.