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Alan Zehnder Phones & Addresses

  • 111 W Yates St, Ithaca, NY 14850
  • Lansing, NY
  • Hampton, VA
  • Pasadena, CA
  • Bellevue, WA

Work

Company: Cornell university Jan 2012 Position: Associate dean for diversity and faculty development, college of engineering

Education

Degree: Ph.D. School / High School: California Institute of Technology 1982 to 1987 Specialities: Mechanical Engineering

Skills

Solid Mechanics • Fracture Mechanics • Materials Science • Composites • Dynamics • Mechanics of Materials • Materials • Simulations • Finite Element Analysis • Mechanical Engineering • Numerical Analysis • Experimental Mechanics • Mechanical Testing • Nanoscale Mechanics • Experimentation

Languages

German

Awards

Fellow - American society of mechanical ... • Rudolf kingslake medal and prize - Spie,...

Interests

Diversity Issues In Engineering • Experimental Mechanics • Optical and Infrared Methods • Wind Energy • Education • Environment • Science and Technology • Fracture of Nanoscale Systems • Fracture Mechanics

Industries

Higher Education

Resumes

Resumes

Alan Zehnder Photo 1

Professor

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Location:
Ithaca, NY
Industry:
Higher Education
Work:
Cornell University since Jan 2012
Associate Dean for Diversity and Faculty Development, College of Engineering

Cornell University - Ithaca, New York Area since Jul 1988
Professor

Vienna University of Technology - Vienna, Austria Jan 2004 - Jul 2004
Guest Professor

California Institute of Technology - Pasadena, California Jul 1987 - Aug 1988
Post-doctoral scholar
Education:
California Institute of Technology 1982 - 1987
Ph.D., Mechanical Engineering
University of California, Berkeley 1978 - 1982
Bachelor of Science (B.S.), Mechanical Engineering
Skills:
Solid Mechanics
Fracture Mechanics
Materials Science
Composites
Dynamics
Mechanics of Materials
Materials
Simulations
Finite Element Analysis
Mechanical Engineering
Numerical Analysis
Experimental Mechanics
Mechanical Testing
Nanoscale Mechanics
Experimentation
Interests:
Diversity Issues In Engineering
Experimental Mechanics
Optical and Infrared Methods
Wind Energy
Education
Environment
Science and Technology
Fracture of Nanoscale Systems
Fracture Mechanics
Languages:
German
Awards:
Fellow
American Society of Mechanical Engineers
Rudolf Kingslake Medal and Prize
SPIE, the international society for optics and photonics
In recognition of the most noteworthy original paper to appear in the Society's official journal, Optical Engineering.

Business Records

Name / Title
Company / Classification
Phones & Addresses
Alan Zehnder
Principal
Cards & Iillustrations
Ret Gifts/Novelties
111 W Yates St, Ithaca, NY 14850

Publications

Us Patents

Heat Pumped Parametric Mems Device

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US Patent:
7654140, Feb 2, 2010
Filed:
Mar 12, 2002
Appl. No.:
10/097178
Inventors:
Maxim Zalalutdinov - Ithaca NY, US
Anatoli Olkhovets - Ithaca NY, US
Alan T. Zehnder - Ithaca NY, US
Bojan Ilic - Ithaca NY, US
David Alan Czaplewski - Ithaca NY, US
Lidija Sekaric - Ithaca NY, US
Jeevak M. Parpia - Ithaca NY, US
Harold G. Craighead - Ithaca NY, US
Assignee:
Cornell Research Foundation, Inc. - Ithaca NY
International Classification:
G01N 29/12
US Classification:
73579, 7350418, 73655
Abstract:
A micro-electrical mechanical oscillator has a resonant frequency of oscillation that is varied by application of heat. The resonant frequency is varied at a frequency different from the resonant frequency of the oscillator to amplify oscillations. In one embodiment, the oscillator is disc of material supported by a pillar of much smaller diameter than the disc. The periphery of the disc is heated by a laser to provide a time varying shift of the resonant frequency (or equivalently the stiffness) of the disc. Feedback from movement of the disc is used to modulate the intensity of the laser, and thus the stiffness of the disc to provide parametric amplification of sensed vibrations, using heating as a pump. Various other shapes of micro-electrical mechanical oscillators are used in other embodiment, including an array of such oscillators on a substrate, each having different resonant frequencies.

Mems Device Annealing

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US Patent:
20070109656, May 17, 2007
Filed:
Feb 20, 2006
Appl. No.:
11/358689
Inventors:
Keith Aubin - Freeville NY, US
Maxim Zalalutdinov - Silver Springs MD, US
Lidija Sekaric - Mount Kisco NY, US
Brian Houston - Fairfax VA, US
Alan Zehnder - Ithaca NY, US
Jeevak Parpia - Ithaca NY, US
Harold Craighead - Ithaca NY, US
International Classification:
G02B 27/10
US Classification:
359623000
Abstract:
A method of increasing a quality factor for a micromechanical resonator uses a laser beam to anneal the micromechanical resonator. In one embodiment, the micromechanical oscillator is formed by fabricating a mushroom shaped silicon oscillator supported by a substrate via a pillar. The laser beam is focused on a periphery of the mushroom shaped silicon oscillator to modify the surface of the mushroom shaped silicon oscillator. In a further embodiment, the mushroom shaped oscillator is a silicon disk formed on a sacrificial layer. Portions of the sacrificial layer are removed to free the periphery of the disk and leave a supporting pillar at the center of the disk. In further embodiments, different type resonators may be used.

High Speed Infrared Imaging System And Method

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US Patent:
62688839, Jul 31, 2001
Filed:
May 29, 1998
Appl. No.:
9/087735
Inventors:
Alan T. Zehnder - Ithaca NY
Ares J. Rosakis - Altadena CA
G. Ravichandran - Arcadia CA
Assignee:
California Institute of Technology - Pasadena CA
International Classification:
H04N 533
G01J 500
US Classification:
348164
Abstract:
A system and method for radiation detection with an increased frame rate. A semi-parallel processing configuration is used to process a row or column of pixels in a focal-plane array in parallel to achieve a processing rate up to and greater than 1 million frames per second.
Alan T Zehnder from Ithaca, NY, age ~63 Get Report