公开(公告)号：US20230103140A1

公开(公告)日：2023-03-30

申请号：US17749360

申请日：2022-05-20

Applicant: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY

Inventor： Peng ZHANG ,  Lin WU ,  Xiao XIONG ,  Yang ZHOU

IPC: H01J1/34 ,  H01J37/26 ,  H01J25/34 ,  H05H15/00 ,  H01J23/04 ,  H01J37/073 ,  H05H7/02 ,  H05H9/00 ,  H05H7/22

Abstract: A dielectric coated plasmonic photoemitter is provided. An aspect of the present photonic apparatus includes a conductive photoemitter including a dielectric material coating or layered on a metallic core. The dielectric material being configured to enhance a local optical field strength and current density of the photoemitter as compared to a bare photoemitter without the dielectric layer. The dielectric layered photoemitter being tunable to transmit photoemissions from corners thereof with different photonic characteristics depending on a laser wavelength pulse received.

公开(公告)号：US20250062095A1

公开(公告)日：2025-02-20

申请号：US18799382

申请日：2024-08-09

Applicant: Board of Trustees of Michigan State University

Inventor： Peng ZHANG ,  Lan JIN ,  Yang ZHOU

IPC: H01J37/063

Abstract: An electron beam emitter apparatus includes a light source and a radio frequency (“RF”) source. In another aspect, an apparatus includes direct density modulation of photo-assisted field emission from a radio frequency cold cathode. A further aspect provides a radio frequency source connected to an electron emitter or cold cathode having tapered projections, and a photon emitter such as a laser, infrared light or ultraviolet light.

公开(公告)号：US20200033293A1

公开(公告)日：2020-01-30

申请号：US16523255

申请日：2019-07-26

Applicant: Board of Trustees of Michigan State University

Inventor： Yangyang FU ,  Peng ZHANG ,  John P. VERBONCOEUR

IPC: G01N27/70 ,  G01N27/30

Abstract: A microscale gas breakdown device includes a first surface and a second surface. The first surface and the second surface define a gap distance. The device includes a perturbation on the first surface or the second surface. The perturbation is defined by a height value and a radius value. The device includes a current source or a voltage source configured to apply a current or a voltage across the first surface and the second surface. In response to the current or the voltage being applied, a resulting discharge travels along a first discharge path in response to being exposed to a high pressure and a second discharge path in response to being exposed to a low pressure.

公开(公告)号：US20190393087A1

公开(公告)日：2019-12-26

申请号：US16448160

申请日：2019-06-21

Applicant: Board of Trustees of Michigan State University

Inventor： Peng ZHANG ,  Sneha BANERJEE ,  John LUGINSLAND

IPC: H01L21/768 ,  H01L51/00 ,  H01L21/67 ,  H01L21/66

Abstract: A method of constructing an electrical contact including a contact element positioned between a first contact member and a second contact member. The method includes defining a transmission line model to represent operation of the electrical contact. The transmission line model indicates a contact resistance and a specific contact resistivity along a length of the contact element. The method includes determining a current flow profile of the contact element. The current flow profile is determined based on a current distribution using the transmission line model. The method includes determining one of: (i) a material, (ii) a thickness, and (iii) a geometry of the contact element based on the contact resistance and the current flow profile of the transmission line model. The method includes constructing the contact element positioned between the first contact member and the second contact member with the at least one of (i) the material, (ii) the thickness, and (iii) the geometry.