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Tomoyuki Yoshie

from Orinda, CA
Age ~57
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Also known as:
Yoshie Tomoyuki
Phone and address:
73 Brookwood Rd UNIT 7, Orinda, CA 94563
(919) 698-9557
Related to:
Yoshie Tomoyuki, 57Yuka Yoshie, 53
Connected to:
Kenji Yoshigoe, 50Hiroaki Yoshihara, 67Kazutaka Yoshihara, 43Kim A Yoshihara, 40Paul H Yoshihara, 74Rita L Yoshihara, 61Sayuri L Yoshihara, 31Stanley L Yoshihara, 67Stefanie S Yoshihara, 41Tracy L Yoshihara, 50

Tomoyuki Yoshie Phones & Addresses

  • 73 Brookwood Rd UNIT 7, Orinda, CA 94563 (919) 698-9557
  • 1469 Gray Bluff Trl, Chapel Hill, NC 27517
  • 450 Catalina Ave, Pasadena, CA 91106 (626) 577-8160

Work

Company: Duke university 2005 Address: Durham, NC Position: Assistant professor of electrical & computer engineering

Education

Degree: Ph.D. School / High School: California Institute of Technology 1999 to 2004 Specialities: Electrical Engineering

Industries

Higher Education

Resumes

Resumes

Tomoyuki Yoshie Photo 1

Assistant Professor At Duke University

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Position:
Assistant Professor of Electrical & Computer Engineering at Duke University
Location:
Raleigh-Durham, North Carolina Area
Industry:
Higher Education
Work:
Duke University - Durham, NC since 2005
Assistant Professor of Electrical & Computer Engineering
California Institute of Technology - Pasadena, CA Jul 2004 - Dec 2004
Postdoctoral Scholar
California Institute of Technology - Pasadena, CA 1999 - 2004
Graduate Research Assistant
Sanyo Electric - Hirakata, Osaka, Japan 1992 - 1999
Chief Research Engineer
Education:
California Institute of Technology 1999 - 2004
Ph.D., Electrical Engineering Kyoto University 1990 - 1992
M.S. Eng., Electrical Engineering Kyoto University 1986 - 1990
B.S.Eng., Electrical Engineering

Publications

Us Patents

Semiconductor Light Emitting Device

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US Patent:
6580736, Jun 17, 2003
Filed:
Mar 23, 2000
Appl. No.:
09/533970
Inventors:
Tomoyuki Yoshie - Pasadena CA
Takenori Goto - Moriguchi, JP
Nobuhiko Hayashi - Osaka, JP
Assignee:
Sanyo Electric Company, Ltd. - Moriguchi
International Classification:
H01S 500
US Classification:
372 45, 372 46, 372 43
Abstract:
In a semiconductor laser device, a buffer layer, an n-contact layer, an n-light cladding layer, an n-light guide layer, an emission layer, a p-cap layer, a p-light guide layer and an n-current blocking layer having a striped opening are successively formed on a sapphire substrate, and a p-light cladding layer is formed in the opening. A p-contact layer is formed on the p-light cladding layer and on the n-current blocking layer. The n-current blocking layer is made of n-Al Ga N and has an electron concentration of 1Ã10 cm and an Al composition greater than 0. 1, and the surface thereof is terminated with N.

Optical Isolator

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US Patent:
8009942, Aug 30, 2011
Filed:
Jul 1, 2009
Appl. No.:
12/496630
Inventors:
Tomoyuki Yoshie - Chapel Hill NC, US
Lingling Tang - Durham NC, US
Samuel Drezdzon - Washington DC, US
Assignee:
Duke University - Durham NC
International Classification:
G02B 6/12
US Classification:
385 14, 385 4, 385 6, 35948401, 35948403
Abstract:
Various optical isolator embodiments are disclosed. Embodiments comprise a waveguide section utilizing materials that induce a propagation constant shift that is propagation-direction-dependent. Embodiments are characterized by a cutoff frequency for forward propagating waves that is different than the cutoff frequency for reverse waves; the dimensions and direction of magnetization of the waveguide can be tailored so that, in a particular embodiment, the cutoff frequency for forward propagating waves is lower than the cutoff frequency for reverse waves. A particular embodiment is constructed as a single-mode waveguide on a substrate. The cross-section of the waveguide is inhomogeneous in terms of materials. At least one part of the cross-section is a non-reciprocal magneto-optic medium, which has nonzero off-diagonal permittivity tensor components. This inhomogeneity induces a propagation constant shift, which is propagation-direction-dependent.

Optical Isolator

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US Patent:
20110311181, Dec 22, 2011
Filed:
Aug 26, 2011
Appl. No.:
13/219355
Inventors:
Tomoyuki Yoshie - Chapel Hill NC, US
Lingling Tang - Durham NC, US
Samuel Drezdzon - Washington DC, US
Assignee:
Duke University - Durham NC
International Classification:
G02B 6/12
US Classification:
385 14
Abstract:
Various optical isolator embodiments are disclosed. Embodiments comprise a waveguide section utilizing materials that induce a propagation constant shift that is propagation-direction-dependent. Embodiments are characterized by a cutoff frequency for forward propagating waves that is different than the cutoff frequency for reverse waves; the dimensions and direction of magnetization of the waveguide can be tailored so that, in a particular embodiment, the cutoff frequency for forward propagating waves is lower than the cutoff frequency for reverse waves. A particular embodiment is constructed as a single-mode waveguide on a substrate. The cross-section of the waveguide is inhomogeneous in terms of materials. At least one part of the cross-section is a non-reciprocal magneto-optic medium, which has nonzero off-diagonal permittivity tensor components. This inhomogeneity induces a propagation constant shift, which is propagation-direction-dependent. This device works as an optical isolator from the cut-off frequency of the lowest forward wave (lower frequency) to one for the lowest reverse wave (higher frequency). Various configurations consistent with the principles of the invention are disclosed.

Optical Isolator

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US Patent:
20130016943, Jan 17, 2013
Filed:
Jul 20, 2012
Appl. No.:
13/554099
Inventors:
Tomoyuki Yoshie - Chapel Hill NC, US
Lingling Tang - Durham NC, US
Samuel Drezdzon - Washington DC, US
Assignee:
Duke University - Durham NC
International Classification:
G02B 6/12
US Classification:
385 14
Abstract:
Various optical isolator embodiments are disclosed. Embodiments comprise a waveguide section utilizing materials that induce a propagation constant shift that is propagation-direction-dependent. Embodiments are characterized by a cutoff frequency for forward propagating waves that is different than the cutoff frequency for reverse waves. A particular embodiment is constructed as a single-mode waveguide on a substrate. The cross-section of the waveguide is inhomogeneous in terms of materials. This inhomogeneity induces a propagation constant shift, which is propagation-direction-dependent. This device works as an optical isolator from the cut-off frequency of the lowest forward wave (lower frequency) to one for the lowest reverse wave (higher frequency). Various configurations consistent with the principles of the invention are disclosed.

Drug Delivery Device

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US Patent:
20210401735, Dec 30, 2021
Filed:
Sep 7, 2021
Appl. No.:
17/468558
Inventors:
- Emeryville CA, US
Kathleen E. Fischer - Emeryville CA, US
Tomoyuki Yoshie - Emeryville CA, US
Wouter Roorda - Emeryville CA, US
Assignee:
NANO PRECISION MEDICAL, INC. - Emeryville CA
International Classification:
A61K 9/00
A61K 38/26
A61K 9/48
Abstract:
Embodiments of the invention include devices, compositions and methods for the controlled release of therapeutic substances, such as drugs. Control over the rate of release of the therapeutic substances from the devices is achieved by the use of nanoporous membranes in which the pore size is matched to the molecular diameter of the therapeutic substances. Some embodiments of the invention achieve zero-order release by the use of membranes with a pore diameter that is more than five times the Stokes' diameter of the therapeutic substance released.

Drug Delivery Device

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US Patent:
20190091140, Mar 28, 2019
Filed:
Nov 29, 2018
Appl. No.:
16/204890
Inventors:
- Emeryville CA, US
Kathleen E Fischer - Emeryville CA, US
Tomoyuki Yoshie - Emeryville CA, US
Wouter E. Roorda - Emeryville CA, US
Assignee:
Nano Precision Medical, Inc. - Emeryville CA
International Classification:
A61K 9/00
A61K 38/26
A61K 9/48
Abstract:
Embodiments of the invention include devices, compositions and methods for the controlled release of therapeutic substances, such as drugs. Control over the rate of release of the therapeutic substances from the devices is achieved by the use of nanoporous membranes in which the pore size is matched to the molecular diameter of the therapeutic substances. Some embodiments of the invention achieve zero-order release by the use of membranes with a pore diameter that is more than five times the Stokes' diameter of the therapeutic substance released.

Implant Device For Drug Delivery

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US Patent:
20170000731, Jan 5, 2017
Filed:
Jan 23, 2015
Appl. No.:
15/113165
Inventors:
- Emeryville CA, US
Kathleen Fischer - Emeryville CA, US
Tomoyuki Yoshie - Emeryville CA, US
International Classification:
A61K 9/00
A61M 31/00
Abstract:
The present invention provides a method for controlling the internal diameter of nanopores to afford nanopore membranes with a zero-order rate of release of a therapeutic agent.

Polymer Optical Isolator

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US Patent:
20160187676, Jun 30, 2016
Filed:
Oct 26, 2015
Appl. No.:
14/923234
Inventors:
Tomoyuki Yoshie - Orinda CA, US
Assignee:
DUKE UNIVERSITY - Durham NC
International Classification:
G02F 1/095
Abstract:
Various optical isolators are disclosed. One embodiment provides an optical isolator comprising a waveguide that includes polymer magneto-optical media. In a particular embodiment, the waveguide is dimensioned for single mode operation in the selected isolation range. A cross-section of the waveguide is inhomogeneous in terms of magneto-optical materials. Polymer magneto-optical material is a part of the optical waveguide structure. The inhomogeneity induces the propagation constant shift, which is propagation-direction-dependent. An embodiment is characterized by a cutoff frequency for forward propagating waves that is different than the cutoff frequency for reverse waves; the dimensions and direction of magnetization of the waveguide can be tailored so that, in a particular embodiment, the cutoff frequency for forward propagating waves is lower than the cutoff frequency for reverse waves.
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Tomoyuki Yoshie from Orinda, CA, age ~57 Get Report