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Proceedings Papers

Biocompatible Energy Harvester for Smart Knee Implants

Osama Abdalla, Emre Salman, Milutin Stanacevic, Ryan Willing, Shahrzad Towfighian
Proc. ASME. SMASIS2024, ASME 2024 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T06A013, September 9–11, 2024
Publisher: American Society of Mechanical Engineers
Paper No: SMASIS2024-141025
https://doi.org/10.1115/SMASIS2024-141025
View Paper titled, Biocompatible Energy Harvester for Smart Knee Implants
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Topics: Biocompatibility, Energy harvesting, Knee joint prostheses, Sensors, Stress, Triboelectric nanogenerators
Proceedings Papers

Energy Harvesting From Motions of a Robotic Worm

Sara Aghazadeh, Mark Zajkowski, Svetlana Bakhmatova, Emily Marie Boggs, Pei-hsin Kuo, Deepak Trivedi, Pu Zhang, Shahrzad Towfighian
Proc. ASME. SMASIS2022, ASME 2022 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T07A002, September 12–14, 2022
Publisher: American Society of Mechanical Engineers
Paper No: SMASIS2022-90798
https://doi.org/10.1115/SMASIS2022-90798
View Paper titled, Energy Harvesting From Motions of a Robotic Worm
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Topics: Circuits, Energy harvesting, Piezoelectric transducers, Robotics, Robots
Journal Articles

Effect of Dielectric Material and Package Stiffness on the Power Generation in a Packaged Triboelectric Energy Harvesting System for Total Knee Replacement

Nabid Aunjum Hossain, Geofrey George Yamomo, Ryan Willing, Shahrzad Towfighian
Journal: Journal of Biomechanical Engineering
Publisher: ASME
Article Type: Research-Article
J Biomech Eng. October 2021, 143(10): 101009.
Paper No: BIO-21-1026
https://doi.org/10.1115/1.4051220
Published Online: June 17, 2021
View Article titled, Effect of Dielectric Material and Package Stiffness on the Power Generation in a Packaged Triboelectric Energy Harvesting System for Total Knee Replacement
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Topics: Dielectric materials, Energy harvesting, Engineering prototypes, Knee joint prostheses, Manufacturing, Plasma desorption mass spectrometry, Stiffness, Stress, Generators, Cycles
Journal Articles

Experimental Characterization of the Electrostatic Levitation Force in MEMS Transducers

Meysam Daeichin, Ronald N. Miles, Shahrzad Towfighian
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. August 2020, 142(4): 041008.
Paper No: VIB-19-1314
https://doi.org/10.1115/1.4046625
Published Online: April 9, 2020
View Article titled, Experimental Characterization of the Electrostatic Levitation Force in MEMS Transducers
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Topics: Electrodes, Levitation, Microelectromechanical systems, Transducers, Displacement, Resonance, Excitation, Stress, Damping, Manufacturing
Proceedings Papers

Feasibility Study of a Capacitive MEMS Filter Using Electrostatic Levitation

Mark Pallay, Shahrzad Towfighian
Proc. ASME. IDETC-CIE2019, Volume 4: 24th Design for Manufacturing and the Life Cycle Conference; 13th International Conference on Micro- and Nanosystems, V004T08A006, August 18–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: DETC2019-97445
https://doi.org/10.1115/DETC2019-97445
View Paper titled, Feasibility Study of a Capacitive MEMS Filter Using Electrostatic Levitation
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Topics: Filters, Levitation, Microelectromechanical systems, Signals, Design, Electrodes, Sensors, Signal processing, Signal to noise ratio
Proceedings Papers

Feasibility of Triboelectric Energy Harvesting and Load Sensing in Total Knee Replacement

Alwathiqbellah Ibrahim, Manav Jain, Emre Salman, Ryan Willing, Shahrzad Towfighian
Proc. ASME. SMASIS2018, Volume 2: Mechanics and Behavior of Active Materials; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting; Emerging Technologies, V002T07A016, September 10–12, 2018
Publisher: American Society of Mechanical Engineers
Paper No: SMASIS2018-8212
https://doi.org/10.1115/SMASIS2018-8212
View Paper titled, Feasibility of Triboelectric Energy Harvesting and Load Sensing in Total Knee Replacement
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Topics: Energy harvesting, Knee joint prostheses, Stress, Generators, Bearings, Circuits, Knudsen number, Sensors, Servomechanisms, Signals
Proceedings Papers

A MEMS Threshold Acceleration Switch Powered by a Triboelectric Generator

Mark Pallay, Alwathiqbellah I. Ibrahim, Shahrzad Towfighian
Proc. ASME. IDETC-CIE2018, Volume 4: 23rd Design for Manufacturing and the Life Cycle Conference; 12th International Conference on Micro- and Nanosystems, V004T08A010, August 26–29, 2018
Publisher: American Society of Mechanical Engineers
Paper No: DETC2018-85543
https://doi.org/10.1115/DETC2018-85543
View Paper titled, A MEMS Threshold Acceleration Switch Powered by a Triboelectric Generator
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Topics: Generators, Microelectromechanical systems, Switches, Electrodes, Sensors, Levitation, Cantilever beams, Cantilevers, Circuits, Dynamic response
Proceedings Papers

Investigation of Vibration Energy Harvesting Using Two Cantilevers With Random Input

Wei Yang, Panagiotis Alevras, Shahrzad Towfighian
Proc. ASME. SMASIS2017, Volume 1: Development and Characterization of Multifunctional Materials; Mechanics and Behavior of Active Materials; Bioinspired Smart Materials and Systems; Energy Harvesting; Emerging Technologies, V001T07A010, September 18–20, 2017
Publisher: American Society of Mechanical Engineers
Paper No: SMASIS2017-3860
https://doi.org/10.1115/SMASIS2017-3860
View Paper titled, Investigation of Vibration Energy Harvesting Using Two Cantilevers With Random Input
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Topics: Cantilevers, Energy harvesting, Vibration, Cantilever beams, Excitation, Energy efficiency, Kinetic energy, Magnetic fields, Magnets, Piezoelectric materials
Proceedings Papers

A Broadband Energy Harvester With Internal Resonance Induced by Two Resonators

Wei Yang, Shahrzad Towfighian
Proc. ASME. IDETC-CIE2017, Volume 8: 29th Conference on Mechanical Vibration and Noise, V008T12A057, August 6–9, 2017
Publisher: American Society of Mechanical Engineers
Paper No: DETC2017-67442
https://doi.org/10.1115/DETC2017-67442
View Paper titled, A Broadband Energy Harvester With Internal Resonance Induced by Two Resonators
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Topics: Energy harvesting, Resonance, Frequency response, Cantilever beams, Design, Engineering simulation, Excitation, Magnets, Piezoelectric materials, Simulation
Proceedings Papers

Modeling an Impact Vibration Harvester With Triboelectric Transduction

Alwathiqbellah Ibrahim, Abdallah Ramini, Shahrzad Towfighian
Proc. ASME. IDETC-CIE2017, Volume 8: 29th Conference on Mechanical Vibration and Noise, V008T12A069, August 6–9, 2017
Publisher: American Society of Mechanical Engineers
Paper No: DETC2017-68283
https://doi.org/10.1115/DETC2017-68283
View Paper titled, Modeling an Impact Vibration Harvester With Triboelectric Transduction
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Topics: Modeling, Vibration, Electrodes, Density, Energy harvesting, Aluminum, Aluminum foil, Electric charge, Flow (Dynamics), Hardening
Proceedings Papers

Parametric Excitation of a Repulsive Force Actuator

Mark Pallay, Shahrzad Towfighian
Proc. ASME. IDETC-CIE2017, Volume 4: 22nd Design for Manufacturing and the Life Cycle Conference; 11th International Conference on Micro- and Nanosystems, V004T09A005, August 6–9, 2017
Publisher: American Society of Mechanical Engineers
Paper No: DETC2017-67381
https://doi.org/10.1115/DETC2017-67381
View Paper titled, Parametric Excitation of a Repulsive Force Actuator
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Topics: Actuators, Electrodes, Equations of motion, Excitation, Microelectromechanical systems, Oscillations, Resonance, Sensors, Signal to noise ratio
Journal Articles

Dynamics of Transition Regime in Bistable Vibration Energy Harvesters

Alwathiqbellah Ibrahim, Shahrzad Towfighian, Mohammad I. Younis
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research-Article
J. Vib. Acoust. October 2017, 139(5): 051008.
Paper No: VIB-16-1454
https://doi.org/10.1115/1.4036503
Published Online: June 28, 2017
View Article titled, Dynamics of Transition Regime in Bistable Vibration Energy Harvesters
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Topics: Displacement, Dynamics (Mechanics), Energy harvesting, Excitation, Magnetic fields, Magnets, Vibration, Deflection, Hardening, Equilibrium (Physics)
Journal Articles

Parametrically Excited Electrostatic MEMS Cantilever Beam With Flexible Support

Mark Pallay, Shahrzad Towfighian
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research-Article
J. Vib. Acoust. April 2017, 139(2): 021002.
Paper No: VIB-16-1229
https://doi.org/10.1115/1.4034954
Published Online: December 7, 2016
View Article titled, Parametrically Excited Electrostatic MEMS Cantilever Beam With Flexible Support
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Topics: Cantilever beams, Design, Microelectromechanical systems, Resonance, Sensors, Stiffness, Frequency response, Springs, Dimensions, Vibration
Proceedings Papers

Performance of a Bi-Stable Resonator With Random Input Vibrations

Wei Yang, Shahrzad Towfighian
Proc. ASME. IDETC-CIE2016, Volume 6: 12th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, V006T09A051, August 21–24, 2016
Publisher: American Society of Mechanical Engineers
Paper No: DETC2016-60324
https://doi.org/10.1115/DETC2016-60324
View Paper titled, Performance of a Bi-Stable Resonator With Random Input Vibrations
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Topics: Vibration, Energy harvesting, Magnets, Gaussian distribution, Nonlinear systems, Random excitation, Random vibration, Resonance, Sensors, Simulation
Proceedings Papers

A MEMS Microphone Using Repulsive Force Sensors

Mehmet Ozdogan, Shahrzad Towfighian
Proc. ASME. IDETC-CIE2016, Volume 4: 21st Design for Manufacturing and the Life Cycle Conference; 10th International Conference on Micro- and Nanosystems, V004T08A017, August 21–24, 2016
Publisher: American Society of Mechanical Engineers
Paper No: DETC2016-60171
https://doi.org/10.1115/DETC2016-60171
View Paper titled, A MEMS Microphone Using Repulsive Force Sensors
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Topics: Force sensors, Microelectromechanical systems, Microphones, Design, Sensors, Acoustics, Actuators, Collapse, Diaphragms (Mechanical devices), Diaphragms (Structural)
Proceedings Papers

Predicting the Output of a Triboelectric Energy Harvester Undergoing Mechanical Pressure

Danial Sharifi Kia, Shahrzad Towfighian, Congrui Jin
Proc. ASME. SMASIS2016, Volume 2: Modeling, Simulation and Control; Bio-Inspired Smart Materials and Systems; Energy Harvesting, V002T07A007, September 28–30, 2016
Publisher: American Society of Mechanical Engineers
Paper No: SMASIS2016-9157
https://doi.org/10.1115/SMASIS2016-9157
View Paper titled, Predicting the Output of a Triboelectric Energy Harvester Undergoing Mechanical Pressure
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Topics: Energy harvesting, Pressure, Interface structure, Deformation, Adhesives, Circuits, Computer simulation, Density, Nanostructures , Electrodes
Proceedings Papers

A Novel Capacitive Sensing Principle for Microdevices

Jian Zhou, Ronald N. Miles, Shahrzad Towfighian
Proc. ASME. IDETC-CIE2015, Volume 4: 20th Design for Manufacturing and the Life Cycle Conference; 9th International Conference on Micro- and Nanosystems, V004T09A024, August 2–5, 2015
Publisher: American Society of Mechanical Engineers
Paper No: DETC2015-46554
https://doi.org/10.1115/DETC2015-46554
View Paper titled, A Novel Capacitive Sensing Principle for Microdevices
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Topics: Actuators, Design, Electric fields, Equilibrium (Physics), Sensors
Proceedings Papers

Static Modeling of a Bi-Axial Micro-Mirror With Sidewall Electrodes

Shahrzad Towfighian, Mehmet Ozdogan
Proc. ASME. IMECE2014, Volume 10: Micro- and Nano-Systems Engineering and Packaging, V010T13A030, November 14–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2014-38834
https://doi.org/10.1115/IMECE2014-38834
View Paper titled, Static Modeling of a Bi-Axial Micro-Mirror With Sidewall Electrodes
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Topics: Electrodes, Mirrors, Modeling, Rotation, Computation, Excitation, Springs
Proceedings Papers

A Low Voltage Electrostatic Micro Actuator for Large Out-of-Plane Displacement

Shahrzad Towfighian, Siyuan He, Ridha Ben Mrad
Proc. ASME. IDETC-CIE2014, Volume 4: 19th Design for Manufacturing and the Life Cycle Conference; 8th International Conference on Micro- and Nanosystems, V004T09A015, August 17–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: DETC2014-34283
https://doi.org/10.1115/DETC2014-34283
View Paper titled, A Low Voltage Electrostatic Micro Actuator for Large Out-of-Plane Displacement
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Topics: Displacement, Microactuators, Actuators, Mirrors, Design, Electrical measurement, Electrostatic actuators, Finite element model, Lenses (Optics), Modeling