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Publications

Search Publications by Jason J. Gorman

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Displaying 1 - 25 of 58

Broadband thermomechanically limited sensing with an optomechanical accelerometer

March 9, 2021
Author(s)
Feng Zhou, Yiliang Bao, Ramgopal Madugani, David Long, Jason Gorman, Thomas W. LeBrun
Cavity optomechanics has enabled precision measurements with unprecedented levels of sensitivity, including the detection of attonewton forces, nanoparticles, magnetic fields, and gravitational waves. In most cases, detection is performed in a narrow

Electro-optic frequency combs for rapid interrogation in cavity optomechanics

January 29, 2021
Author(s)
David Long, Benjamin J. Reschovsky, Feng Zhou, Yiliang Bao, Thomas W. LeBrun, Jason Gorman
Electro-optic frequency combs were employed to rapidly interrogate an optomechanical sensor, demonstrating spectral resolution substantially exceeding that possible with a mode-locked frequency comb. Frequency combs were generated using an integrated

Existence conditions for phononic frequency combs

November 5, 2020
Author(s)
Zhen Qi, Curtis R. Menyuk, Jason Gorman, Adarsh V. Ganesan
Recently, the mechanical analog of optical frequency combs, phononic frequency combs, have been demonstrated in mechanical resonators and have gained interest since their comb frequencies can be in the range of kilohertz to gigahertz. The physical origin

Phononic Frequency Combs For Engineering MEMS/NEMS Devices With Tunable Sensitivity

January 13, 2020
Author(s)
Adarsh V. Ganesan, Ashwin Seshia, Jason J. Gorman
Over the past two decades, MEMS resonators have received considerable attention for physical, chemical and biological sensing applications. Typically, the operation of MEMS resonant sensors relies on the tracking of a resonance frequency using a feedback

Label-free surface acoustic wave-based embedded flow sensor

October 27, 2019
Author(s)
Aurore F. Quelennec, Jason J. Gorman, Darwin R. Reyes-Hernandez
This paper presents a calibration/label-free flow sensor embedded in a microfluidic system. This sensor is based on surface acoustic waves, where the acoustic intensity is dependent on the flow rate of the propagating medium. The range of flow rates

Identifying spurious modes in RF-MEMS resonators using photoelastic imaging

January 21, 2018
Author(s)
Vikrant J. Gokhale, Jason J. Gorman
This paper reports the first use of dynamic photoelastic imaging for identifying in-plane vibration modes in high-frequency MEMS resonators. In a set of width-extensional mode resonators (WE-BARs), we map fundamental width-extensional modes and unwanted

Parametric resonance in linear microresonators using analog feedback

January 21, 2018
Author(s)
Jason J. Gorman, Vikrant J. Gokhale
This paper reports on the design and implementation of an analog feedback controller for generating parametric resonance in linear microresonators that do not intrinsically demonstrate this phenomenon. It is shown that the controller produces a fundamental

A Photonic MEMS Accelerometer with a Low-Finesse Hemispherical Microcavity Readout

August 13, 2017
Author(s)
Yiliang Bao, Feng Zhou, Thomas W. LeBrun, Jason J. Gorman
This paper describes the design, fabrication, and testing of a photonic MEMS accelerometer that uses a hemispherical microcavity to transduce the motion of the proof mass. The cavity design provides stable operation that is relatively tolerant of

Concave silicon micromirrors for stable hemispherical optical microcavities

June 23, 2017
Author(s)
Yiliang Bao, Feng Zhou, Thomas W. LeBrun, Jason J. Gorman
A detailed study of the fabrication of silicon concave micromirrors for hemispherical microcavities is presented that includes fabrication yield, surface quality, surface roughness, cavity depth, radius of curvature, and the aspect ratio between the cavity

An Optomechanical Accelerometer with a High-Finesse Hemispherical Optical Cavity

February 23, 2016
Author(s)
Yiliang Bao, Felipe Guzman, Arvind K. Balijepalli, John R. Lawall, Jacob M. Taylor, Thomas W. LeBrun, Jason J. Gorman
A new design for an optomechanical accelerometer is presented. The design includes a hemispherical optical cavity that can achieve high finesse and a proof mass that is well-constrained by silicon nitride beams. Based on previous work and analysis, the

MEMS Nanopositioners

January 1, 2016
Author(s)
Jason J. Gorman
This book chapter provides a review of the state of the art for MEMS nanopositioners. The motivation for MEMS nanopositioners is presented with respect to the advantages of this technology compared to macroscale mechanisms and the novel applications that

MEMS optomechanical accelerometry standards

July 8, 2015
Author(s)
Felipe Guzman, Yiliang Bao, Jason J. Gorman, John R. Lawall, Jacob M. Taylor, Thomas W. LeBrun
Current acceleration primary standards reach relative uncertainties of the order of 0.001 and consist of complex test facilities, typically operated at National Metrology Institutes. Our research focuses on the development of silicon mechanical oscillator

Large Stroke Electrostatic Comb Drive Actuators Enabled by a Novel Flexure Mechanism

April 30, 2013
Author(s)
Mohammad Olfatnia, Siddharth Sood, Jason J. Gorman, Shorya Awtar
This paper reports in-plane electrostatic combdrive actuators with stroke as large as 245 μm that is achieved by employing a novel Clamped Paired Double Parallelogram (C-DPDP) flexure mechanism. The C-DP-DP flexure mechanism design offers high bearing