Dr. William W. Clark Profile

Dr. William W. Clark

Associate Professor at Univ of Pittsburgh

SPIE Involvement:

Author

Publications (30)

Proceedings Article | 27 April 2011 Paper

Exploration of new cymbal design in energy harvesting

Daniel Arnold, William Kinsel, William Clark, Changki Mo

Proceedings Volume 7977, 79770T (2011) https://doi.org/10.1117/12.880614

KEYWORDS: Ferroelectric materials, Composites, Transducers, Energy harvesting, Epoxies, Metals, Rubidium, Radium, Oscilloscopes, Mechanical engineering

Read Abstract +

Proceedings Article | 29 March 2010 Paper

Modeling of a high-deformation shape memory polymer locking link

William Clark, John Brigham, Changki Mo, Shiv Joshi

Proceedings Volume 7645, 764507 (2010) https://doi.org/10.1117/12.847987

KEYWORDS: Shape memory polymers, 3D modeling, Finite element methods, Fluctuations and noise, Mechanics, Numerical analysis, Skin, Composites, Aluminum, Robotics

Read Abstract +

Proceedings Article | 7 April 2009 Paper

Development and testing of a MEMS piezoelectric energy harvester

Ryan Knight, Changki Mo, William Clark

Proceedings Volume 7288, 72880A (2009) https://doi.org/10.1117/12.815533

KEYWORDS: Electrodes, Ferroelectric materials, Microelectromechanical systems, Finite element methods, Energy harvesting, 3D modeling, Oxides, Zirconium dioxide, Gold, Chromium

Read Abstract +

Proceedings Article | 18 April 2008 Paper

Performance comparison of implantable piezoelectric energy harvesters

Changki Mo, Leon Radziemski, William Clark

Proceedings Volume 6928, 69280C (2008) https://doi.org/10.1117/12.776293

KEYWORDS: Ferroelectric materials, Aluminum, Medical devices, Energy harvesting, Capacitors, Capacitance, Resistance, Sensors, Electronics, Blood pressure

Read Abstract +

Proceedings Article | 27 April 2007 Paper

Analysis of PMN-PT and PZT circular diaphragm energy harvesters for use in implantable medical devices

Changki Mo, Leon Radziemski, William Clark

Proceedings Volume 6525, 652507 (2007) https://doi.org/10.1117/12.716663

KEYWORDS: Ferroelectric materials, Medical devices, Energy harvesting, Rhodium, Aluminum, Transducers, Blood pressure, Power supplies, Lead, Composites

Read Abstract +

Proceedings Article | 17 April 2007 Paper

On a path toward structures with reconfigurable circulatory systems

William Clark, Brad Boyerinas, Lisa Weiland, Sung Kwon Cho, Chris Bielawski, Eric Beckman

Proceedings Volume 6526, 65261H (2007) https://doi.org/10.1117/12.714924

KEYWORDS: Circulatory system, Beam shaping, Mechanical engineering, Materials science, Chemistry, Biochemistry, Chemical engineering, Structural design, Mechanics, Composites

Read Abstract +

Proceedings Article | 5 April 2006 Paper

Behavior of unimorph rectangular piezoelectric diaphragm actuators

Brad Boyerinas, Changki Mo, William Clark

Proceedings Volume 6173, 617302 (2006) https://doi.org/10.1117/12.657524

KEYWORDS: Electrodes, Actuators, Finite element methods, Ferroelectric materials, Chemical elements, Analytical research, Systems modeling, Composites, Aluminum, Etching

Read Abstract +

Proceedings Article | 31 March 2006 Paper

Frequency tuning of film bulk acoustic resonators

Amanda Frederick, Hsin-Hua Hu, William Clark

Proceedings Volume 6172, 617203 (2006) https://doi.org/10.1117/12.658472

KEYWORDS: Acoustics, Resonators, Electrodes, Ferroelectric materials, Zinc oxide, Capacitors, Aluminum nitride, Capacitance, Manufacturing, Thin films

Read Abstract +

Proceedings Article | 15 March 2006 Paper

Energy harvesting from mechanical vibrations using piezoelectric cantilever beams

Thomas Johnson, David Charnegie, William Clark, Michael Buric, George Kusic

Proceedings Volume 6169, 61690D (2006) https://doi.org/10.1117/12.659466

KEYWORDS: Ferroelectric materials, Energy harvesting, Aluminum, Electronic components, Metals, Sensors, Capacitance, Epoxies, Mechanical engineering, Computer engineering

Read Abstract +

Proceedings Article | 17 May 2005 Paper

Effect of electrode pattern on the performance of unimorph piezoelectric diaphragm actuators

Rika Wright, Changki Mo, William Clark

Proceedings Volume 5764, (2005) https://doi.org/10.1117/12.601985

KEYWORDS: Electrodes, Ferroelectric materials, Actuators, Fiber optics sensors, Image segmentation, Energy harvesting, Sensors, Printing, Composites, Data centers

Read Abstract +

Proceedings Article | 17 May 2005 Paper

Analysis and testing of a THUNDER piezoelectric actuator as a prime mover in a gas flow control valve

Jesse Rodgers, William Clark, Jeffrey Vipperman

Proceedings Volume 5764, (2005) https://doi.org/10.1117/12.599624

KEYWORDS: Actuators, Modulation, Control systems, Sensors, Manufacturing, Photodetectors, Lead, Analytical research, Ceramics, Nano opto mechanical systems

Read Abstract +

Proceedings Article | 16 May 2005 Paper

Evaluation of performance indices for tuning the switch timing of pulse-switched piezoelectric shunts for vibration control

William Clark, Jared Schoenly

Proceedings Volume 5760, (2005) https://doi.org/10.1117/12.604343

KEYWORDS: Switches, Switching, Transducers, Vibration control, Control systems, Actuators, Resistors, Bandpass filters, Computer simulations, Numerical simulations

Read Abstract +

Proceedings Article | 29 July 2004 Paper

Harvesting energy from a cantilever piezoelectric beam

Sunghwan Kim, Thomas Johnson, William Clark

Proceedings Volume 5386, (2004) https://doi.org/10.1117/12.539889

KEYWORDS: Energy harvesting, Electrodes, Capacitance, Analytical research, Aluminum, Actuators, Chemical elements, Eye, Electromechanical design, Ceramics

Read Abstract +

Proceedings Article | 22 July 2003 Paper

Design and analysis of a piezoelectric cantilever beam resonator

Muturi Muriuki, William Clark, Qing-Ming Chen, Qing-Ming Wang

Proceedings Volume 5055, (2003) https://doi.org/10.1117/12.483586

KEYWORDS: Actuators, Sensors, Resonators, Ferroelectric materials, Piezoelectric effects, Matrices, Electrodes, Capacitance, Manufacturing, Beam shaping

Read Abstract +

Proceedings Article | 22 July 2003 Paper

Piezoelectric energy harvesting using a diaphragm structure

Sunghwan Kim, William Clark, Qing-Ming Wang

Proceedings Volume 5055, (2003) https://doi.org/10.1117/12.483587

KEYWORDS: Energy harvesting, Capacitance, Ferroelectric materials, Electrodes, Polonium, Roentgenium, Chemical elements, Analytical research, Actuators, Eye

Read Abstract +

Proceedings Article | 22 July 2003 Paper

Design and analysis of an electromechanical filter with piezoelectric transducers

Michael Dmuchoski, William Clark

Proceedings Volume 5050, (2003) https://doi.org/10.1117/12.484255

KEYWORDS: Resonators, Electromechanical design, Transducers, Ferroelectric materials, Electronic filtering, Signal attenuation, Telecommunications, Navigation systems, Control systems, Photography

Read Abstract +

Proceedings Article | 27 June 2002 Paper

Experimental and analytical studies of a novel semi-active piezoelectric coulomb damper

Ozlem Durmaz, William Clark, David Bennett, Jeffrey Paine, Marc Samuelson

Proceedings Volume 4697, (2002) https://doi.org/10.1117/12.472661

KEYWORDS: Actuators, Data modeling, Solids, Patents, Modulation, Ferroelectric materials, Structural dynamics, Mathematical modeling, Electronics, Prototyping

Read Abstract +

Proceedings Article | 2 July 2001 Paper

Comparison of low-frequency piezoceramic shunt techniques for structural damping

Lawrence Corr, William Clark

Proceedings Volume 4331, (2001) https://doi.org/10.1117/12.432709

KEYWORDS: Switching, Actuators, Resistance, Inductance, Switches, Sensors, Numerical simulations, Control systems, Aluminum, Vibration control

Read Abstract +

Proceedings Article | 14 June 2001 Paper

Piezoelectric energy harvesting for bio-MEMS applications

Michael Ramsay, William Clark

Proceedings Volume 4332, (2001) https://doi.org/10.1117/12.429684

KEYWORDS: Microelectromechanical systems, In vivo imaging, Power supplies, Blood pressure, Energy harvesting, Transducers, Ferroelectric materials, Polarization, Polymers, Ferroelectric polymers

Read Abstract +

Proceedings Article | 12 June 2000 Paper

Development of a piezoelectrically actuated cell stretching device

William Clark, Randall Smith, Katherine Janes, John Winkler, Michael Mulcahy

Proceedings Volume 3991, (2000) https://doi.org/10.1117/12.388171

KEYWORDS: Actuators, Silicon, Bone, Tissues, Kinematics, Collagen, Chlorine, Finite element methods, Content addressable memory, Semiconducting wafers

Read Abstract +

Proceedings Article | 27 April 2000 Paper

Semi-active vibration suppression of an impulsively excited machine on a flexible foundation

William Clark, Jeffrey Vipperman

Proceedings Volume 3989, (2000) https://doi.org/10.1117/12.384587

KEYWORDS: Actuators, Control systems, Vibration control, Differential equations, Solids, Wind energy, Buildings, Bridges, Mathematical modeling, Smart materials

Read Abstract +

Proceedings Article | 9 July 1999 Paper

Linear traveling wave motor

Christoph Hyder, Garnett Horner, William Clark

Proceedings Volume 3674, (1999) https://doi.org/10.1117/12.351557

KEYWORDS: Actuators, Semiconducting wafers, Ferroelectric materials, Manufacturing, Prototyping, Ultrasonics, Finite element methods, Data modeling, Lithium, Composites

Read Abstract +

Proceedings Article | 9 July 1999 Paper

Active piezoceramic-driven flexure actuator

Clifford Wood, Garnett Horner, William Clark

Proceedings Volume 3674, (1999) https://doi.org/10.1117/12.351556

KEYWORDS: Ceramics, Actuators, Motion models, Finite element methods, Epoxies, Nickel, Lead, Numerical modeling, Ferroelectric materials, Electro optics

Read Abstract +

Proceedings Article | 9 June 1999 Paper

Active and passive vibration confinement using piezoelectric transducers and dynamic vibration absorbers

Lawrence Corr, William Clark

Proceedings Volume 3668, (1999) https://doi.org/10.1117/12.350750

KEYWORDS: Actuators, Sensors, Transducers, Control systems, Numerical simulations, Systems modeling, Matrices, Vibration control, Beam shaping, Surface plasmons

Read Abstract +

Proceedings Article | 2 June 1999 Paper

Design issues in magnetorheological fluid actuators

Muturi Muriuki, William Clark

Proceedings Volume 3672, (1999) https://doi.org/10.1117/12.349804

KEYWORDS: Magnetism, Actuators, Iron, Motion models, Aluminum, Data acquisition, Particles, Resistance, Motion measurement, Copper

Read Abstract +

Proceedings Article | 2 June 1999 Paper

Semi-active control of flexural vibrations with an MR fluid actuator

Jinkyoo Lee, William Clark

Proceedings Volume 3672, (1999) https://doi.org/10.1117/12.349779

KEYWORDS: Actuators, Vibration control, Control systems, Magnetism, Beam controllers, Numerical simulations, Amplifiers, Microfluidics, Iron, Systems modeling

Read Abstract +

Proceedings Article | 2 June 1999 Paper

Semi-active vibration control with piezoelectric materials as variable-stiffness actuators

William Clark

Proceedings Volume 3672, (1999) https://doi.org/10.1117/12.349775

KEYWORDS: Actuators, Ferroelectric materials, Vibration control, Switching, Control systems, Aluminum, Switches, Acoustics, Logic, Systems modeling

Read Abstract +

Proceedings Article | 16 June 1998 Paper

Modeling of a magnetorheological fluid damper with parallel plate behavior

Abdulazim Falah, William Clark, Pradeep Phule

Proceedings Volume 3327, (1998) https://doi.org/10.1117/12.310691

KEYWORDS: Magnetism, Fluid dynamics, Amplifiers, Data modeling, Iron, Systems modeling, Head, Actuators, Analytical research, Data acquisition

Read Abstract +

Proceedings Article | 16 June 1998 Paper

Experimental analysis of vibration confinement to enhance conventional active vibration control

William Clark, Zhengrong Zhu

Proceedings Volume 3326, (1998) https://doi.org/10.1117/12.310659

KEYWORDS: Vibration control, Active vibration control, Actuators, Sensors, Optical simulations, Control systems, Feedback control, Systems modeling, Mechanical engineering, Mathematical modeling

Read Abstract +

Proceedings Article | 23 May 1997 Paper

Comparison of vibration control by confinement to conventional active vibration control methods

William Clark, Fangning Sun, David Tarnowski

Proceedings Volume 3044, (1997) https://doi.org/10.1117/12.274689

KEYWORDS: Control systems, Active vibration control, Vibration control, Feedback control, Adaptive control, Active isolation, Voltage controlled current source, Beam shaping, Digital filtering, Optical filters

Read Abstract +