Publications

Books

Edited

Micro Electronic and Mechanical Systems, Ed. K. Takahata, IN-TECH, Dec 2009, ISBN 978-953-307-027-8.

Chapters

K. Takahata, "Micro-Electro-Discharge Machining Technologies for MEMS," in Micro Electronic and Mechanical Systems, IN-TECH, Dec 2009, ISBN 978-953-307-027-8.

Journals

D. Lappin, A.R. Mohammadi, K. Takahata, "An Experimental Study of Electrochemical Polishing for Micro-Electro-Discharge-Machined Stainless-Steel Stents," J. Materials Science: Materials in Medicine, Dec 2011 (accepted).

B. Assadsangabi, M.S. Mohamed Ali, K. Takahata, "Bidirectional Actuation of Ferrofluid Using Micropatterned Planar Coils Assisted by Bias Magnetic Fields," Sensors and Actuators A: Physical, Nov 2011 (accepted).

M.S. Mohamed Ali, B. Bycraft, C. Schlosser, B. Assadsangabi, K. Takahata, "Out-of-Plane Spiral-Coil Inductor Self-Assembled by Locally Controlled Bimorph Actuation," Micro & Nano Letters, 6(12), 2011, pp. 1016-1018.

T. Saleh, M. Dahmardeh, A. Bsoul, A. Nojeh, K. Takahata, "Field-Emission-Assisted Approach to Dry Micro-Electro-Discharge Machining of Carbon-Nanotube Forests," J. Applied Physics, 110, 2011, 103305 (7pp).

A.R. Mohammadi, K. Chen, M.S. Mohamed Ali, K. Takahata, "Radio Aneurysm Coils for Noninvasive Detection of Cerebral Emolization Failures: A Preliminary Study," Biosensors and Bioelectronics, 30, 2011 pp. 300-305.

D. Brox, A.R. Mohammadi, K. Takahata, "Non-Lithographically Microfabricated Capacitive Pressure Sensor for Biomedical Applications," IET Electronics Letters, 47(18), 2011, pp. 1015-1017.

A. Bsoul, M.S. Mohamed Ali, K. Takahata, "Piezoresistive Pressure Sensor Using Vertically Aligned Carbon-Nanotube Forests," IET Electronics Letters, 47(14), 2011, pp. 807-808.

M.S. Mohamed Ali, K. Takahata, “Wireless Microfluidic Control with Integrated Shape-Memory-Alloy Actuators Operated by Field Frequency Modulation,” J. Micromechanics and Microengineering, 21, 2011, 075005 (10pp).

M. Dahmardeh, A. Nojeh, K. Takahata, “Possible Mechanism in Dry Micro-Electro-Discharge Machining of Carbon-Nanotube Forests: A study of the Effect of Oxygen,” J. Applied Physics, 109, 2011, 093308 (4pp).

S. Rahimi, E.H. Sarraf, G.K. Wong, K. Takahata, "Implantable Drug Delivery Device Using Frequency-Controlled Wireless Hydrogel Microvalves," Biomedical Microdevices, 13(2), 2011, pp. 267-277.
W. Khalid, M.S. Mohamed Ali, M. Dahmardeh, Y. Choi, P. Yaghoobi, A. Nojeh, K. Takahata, "High-Aspect-Ratio, Free-Form Patterning of Carbon Nanotube Forests using Micro-Electro-Discharge Machining," Diamond and Related Materials, 19(11), 2010, pp. 1405-1410.

M.S. Mohamed Ali, K. Takahata, "Frequency-Controlled Wireless Shape-Memory-Alloy Microactuators Integrated using an Electroplating Bonding Process," Sensors and Actuators A: Physical, 163(1), 2010, pp. 363-372.

C.R. Alla Chaitanya, N. Wang, K. Takahata, "MEMS-Based Micro-Electro-Discharge Machining by Electrostatic Actuation of Machining Electrodes on the Workpiece," IEEE/ASME J. Microelectromechanical Systems, 2010, pp. 690-699.

V. Sridhar, K. Takahata, "A Hydrogel-Based Passive Wireless Sensor Using a Flex-Circuit Inductive Transducer," Sensors and Actuators A: Physical, 155, 2009, pp. 58-65.
C.R. Alla Chaitanya, K. Takahata, "M3EDM: MEMS-Enabled Micro-Electro-Discharge Machining," J. Micromechanics and Microengineering, 18, 2008, 105009. (7pp)

K. Takahata, Y.B. Gianchandani, "A Micromachined Capacitive Pressure Sensor Using a Cavity-Less Structure with Bulk-Metal/Elastomer Layers and its Wireless Telemetry Application," Sensors, 8, 2008, pp. 2317-2330.

K. Takahata, Y.B. Gianchandani, K.D. Wise, "Micromachined Antenna Stents and Cuffs for Monitoring Intraluminal Pressure and Flow," IEEE/ASME J. Microelectromechanical Systems, 15(5), 2006, pp. 1289-1298.

L.L. Chu, K. Takahata, P. Selvaganapathy, Y.B. Gianchandani, J.L. Shohet, "A Micromachined Kelvin Probe with Integrated Actuator for Microfluidic and Solid-State Applications," IEEE/ASME J. Microelectromechanical Systems, 14(4), 2005, pp. 691-698.

K. Takahata, Y.B. Gianchandani, "A Planar Approach for Manufacturing Cardiac Stents: Design, Fabrication, and Mechanical Evaluation," IEEE/ASME J. Microelectromechanical Systems, 13(6), 2004, pp. 933-939.

K. Takahata, Y.B. Gianchandani, "Batch Mode Micro-Electro-Discharge Machining," IEEE/ASME J. Microelectromechanical Systems, 11(2), 2002, pp. 102-110.

K. K. Takahata, N. Shibaike, H. Guckel, "High-Aspect-Ratio WC-Co Microstructure Produced by the Combination of LIGA and Micro-EDM," Microsystem Technologies, 6(5), 2000, pp. 175-178.

K. Takahata, S. Aoki, T. Sato, "Fine Surface Finishing Method for 3-Dimensional Micro Structures," IEICE Trans. Electronics, E80-C, 2, 1997, pp. 291-296.

Conference Proceedings

B. Assadsangabi, M.S. Mohamed Ali, K. Takahata, "Ferrofluid-Based Variable Inductor," 25th IEEE Int'l Conf. Micro Electro Mechanical Systems (MEMS 2012), Paris, France, January 2012 (accepted).

T. Saleh, M. Dahmardeh, A. Bsoul, A. Nojeh, K. Takahata, "High-Precision Dry Micro-Electro-Discharge Machining of Carbon-Nanotube Forests with Ultralow Discharge Energy," 25th IEEE Int'l Conf. Micro Electro Mechanical Systems (MEMS 2012), Paris, France, January 2012 (accepted).

D. Brox, A. Rashidi Mohammadi, K. Takahata, "Non-Lithographically Micromachined Capacitive Pressure Sensor Based on Stainless Steel for Biomedical Applications," IEEE Sensors, Limerick, Ireland, October 2011 (accepted).

M.S. Mohamed Ali, K. Takahata, “Selective RF Wireless Control of Integrated Bulk-Micromachined Shape-Memory-Alloy Actuators and its Microfluidic Application,” 24th IEEE Int'l Conf. Micro Electro Mechanical Systems (MEMS 2011), Cancun, Mexico, 2011, pp. 1269-1272.

S. Rahimi, K. Takahata, “A Wireless Implantable Drug Delivery Device with Hydrogel Microvalves Controlled by Field-Frequency Tuning,” 24th IEEE Int'l Conf. Micro Electro Mechanical Systems (MEMS 2011), Cancun, Mexico, 2011, pp. 1019-1022.

M. Dahmardeh, W. Khalid, M.S. Mohamed Ali, Y. Choi, P. Yaghoobi, A. Nojeh, K. Takahata, “High-Aspect-Ratio, 3-D Micromachining of Carbon-Nanotube Forests by Micro-Electro-Discharge Machining in Air,” 24th IEEE Int'l Conf. Micro Electro Mechanical Systems (MEMS 2011), Cancun, Mexico, 2011, pp. 272-275.

M.S. Mohamed Ali, K. Takahata, "A Wirelessly Controlled Shape-Memory-Alloy MEMS Gripper Microfabricated Using an Electroplating-Based Bonding Process," Solid-State Sensor, Actuator and Microsystems Workshop (Hilton Head 2010), Hilton Head Island, SC, USA, 2010, pp. 396-399.

E.H. Sarraf, G.K. Wong, K. Takahata, "Frequency-Selectable Wireless Actuation of Hydrogel Using Micromachined Resonant Heaters toward Implantable Drug Delivery Applications," 15th IEEE Int'l Conf. Solid-State Sensors, Actuators and Microsystems (Transducers 2009), Denver, CO, USA, June 2009, pp. 1525-1528.

C.R. Alla Chaitanya, K. Takahata, "MEMS-Based Batch-Mode Micro-Electro-Discharge Machining Using Microelectrode Arrays Actuated by Hydrodynamic Force," 22th IEEE Int'l Conf. Micro Electro Mechanical Systems (MEMS 2009), Sorrento, Italy, 2009, pp. 705-708.

C.R. Alla Chaitanya, K. Takahata, "MEMS-Enabled Micro-Electro-Discharge Machining (M3EDM) Using Microelectrode Actuation by Hydrodynamic Force," 19th MicroMechanics Workshop (MME 2008), Aachen, Germany, 2008, pp. 351-354.

K. Takahata, Y.B. Gianchandani, "A Cavity-Less Micromachined Capacitive Pressure Sensor for Wireless Operation in Liquid Ambient," Solid-State Sensor, Actuator and Microsystems Workshop (Hilton Head 2008), Hilton Head Island, SC, USA, 2008, pp. 300-303.

V. Sridhar, K. Takahata, "A Hydrogel-Based Wireless Sensor Using Micromachined Variable Inductors with Folded Flex-Circuit Structures for Biomedical Applications," 21th IEEE Int'l Conf. Micro Electro Mechanical Systems (MEMS 2008), Tucson, AL, USA, 2008, pp. 70-73.

C.R. Alla Chaitanya, K. Takahata, "Micro-Electro-Discharge Machining by MEMS Actuators with Planar Electrodes Microfabricated on the Work Surfaces," 21th IEEE Int'l Conf. Micro Electro Mechanical Systems (MEMS 2008), Tucson, AL, USA, 2008, pp. 375-378.

K. Takahata, Y.B. Gianchandani, "Bulk-Metal-Based MEMS Fabricated by Micro-Electro-Discharge Machining," 20th IEEE Canadian Conf. Electrical and Computer Engineering (CCECE 2007), Vancouver, Canada, 2007, pp. 1-4.

K. Takahata, Y.B. Gianchandani, "A Micromachined Polyurethane/Stainless-Steel Capacitive Pressure Sensor Without Cavity and Diaphragm," 13th IEEE Int'l Conf. Solid-State Sensors, Actuators and Microsystems (Transducers 2005), Seoul, Korea, 2005, pp. 483-486.

K. Takahata, Y.B. Gianchandani, "Micromachined Intraluminal Devices for Active and Passive Electromagnetic Measurements of Flow," 18th IEEE Int'l Conf. Micro Electro Mechanical Systems (MEMS 2005), Miami Beach, FL, USA, 2005, pp. 863-866.

K. Takahata, Y.B. Gianchandani, "A Micromachined Stainless Steel Cuff for Electromagnetic Measurement of Flow in Blood Vessels," Solid-State Sensor, Actuator and Microsystems Workshop (Hilton Head 2004), Hilton Head Island, SC, USA, 2004, pp. 290-293.

K. Takahata, A. DeHennis, K.D. Wise, Y.B. Gianchandani, "A Wireless Microsensor for Monitoring Flow and Pressure in a Blood Vessel Utilizing a Dual-Inductor Antenna Stent and Two Pressure Sensors," 17th IEEE Int'l Conf. Micro Electro Mechanical Systems (MEMS 2004), Maastricht, The Netherlands, 2004, pp. 216-219.

K. Takahata, A. DeHennis, K.D. Wise, Y.B. Gianchandani, "Stentenna: A Micromachined Antenna Stent for Wireless Monitoring of Implantable Microsensors," 25th IEEE Int'l Conf. Engineering in Medicine and Biology Society (EMBS 2003), Cancun, Mexico, 2003, pp. 3360-3363.

L.L. Chu, K. Takahata, P. Selvaganapathy, J.L. Shohet, Y.B. Gianchandani, "A Micromachined Kelvin Probe for Surface Potential Measurements in Microfluidic Channels and Solid-State Applications," 12th IEEE Int'l Conf. Solid-State Sensors, Actuators and Microsystems (Transducers 2003), Boston, MA, USA, 2003, pp. 384-387.

K. Takahata, Y.B. Gianchandani, "Coronary Artery Stents Microfabricated from Planar Metal Foil: Design, Fabrication, and Mechanical Testing," 16th IEEE Int'l Conf. Micro Electro Mechanical Systems (MEMS 2003), Kyoto, Japan, 2003, pp. 462-465.

K. Takahata, Y.B. Gianchandani, "Parallel Discharge with Partitioned Electrode Arrays for Accelerated Batch Mode Micro-EDM," 11th IEEE Int'l Conf. Solid-State Sensors, Actuators and Microsystems (Transducers 2001), Munich, Germany, 2001, pp. 1598-1601.

C.A. Grimes, M.K. Jain, R.S. Singh, Q. Cai, A. Mason, K. Takahata, Y. Gianchandani, "Magnetoelastic Microsensors for Environmental Monitoring," 14th IEEE Int'l Conf. Micro Electro Mechanical Systems (MEMS 2001), Interlaken, Switzerland, 2001, pp. 278-281.

K. Takahata, Y.B. Gianchandani, "Batch Mode Micro-EDM for High-Density and High-Throughput Micromachining," 14th IEEE Int'l Conf. Micro Electro Mechanical Systems (MEMS 2001), Interlaken, Switzerland, 2001, pp. 72-75.

T. Wada, T. Masaki, K. Takahata, "Study of Micro V-Groove Machining Method : Application to Three Dimensional Surface," JSME Annual Meeting, 2000(3), pp. 533-534.

K. Takahata, N. Shibaike, H. Guckel, "High-Aspect-Ratio WC-Co Microstructure Produced by the Combination of LIGA and Micro-EDM," 3rd Int'l Workshop on High Aspect Ratio Microstructure Technology (HARMST 1999), Chiba, Japan, 1999, pp. 100-101.

K. Takahata, N. Shibaike, H. Guckel, "A Novel Micro Electro-Discharge Machining Method Using Electrodes Fabricated by the LIGA Process," 12th IEEE Int'l Conf. Micro Electro Mechanical Systems (MEMS 1999), Orlando, FL, USA, 1999, pp. 238-243.

K. Takahata, T. Masaki, "High Precision Machining of Micro V-grooves," JSPE Kansai-Region Annual Meeting, 1998, pp. 35-36.. (in Japanese)

K. Takahata, S. Aoki, T. Sato, "Fine Surface Finishing Method for 3-Dimensional Micro Structures," 9th IEEE Int'l Workshop on Micro Electro Mechanical Systems (MEMS 1996), San Diego, CA, USA, 1996, pp. 73-78.

K. Nakamura, K. Takahata, A. Ono, H. Ogura, S. Aoki, "An Electrostatic Micro Wobble Motor for Nondestructive Testing," 1st Int'l Micromachine Symp., Tokyo, Japan, 1995, pp. 147-150.

K. Takahata, S. Aoki, T. Sato, "A Study on Surface Finishing Method for Micro-Parts," Asian Electrical-Machining Symp. and Annual Meeting of JSEME, 1995, pp. 67-68.. (in Japanese)

K. Takahata, S. Aoki, T. Sato, "A Study on Finishing Method for Surfaces Machined by Micro-EDM," Spring Annual Meeting of JSPE, 1995, pp. 963-964.. (in Japanese)

Invited Papers/Talks

K. Takahata, "RF Wireless Microactuators and Application to Implantable Drug Delivery Devices," 2nd Annual Biomedical Engineering Workshop, University of British Columbia, Vancouver, Canada, Nov 17, 2011.

K. Takahata, "RF-Controlled Wireless MEMS Actuators and Devices for Biomedical Applications," 8th CMOS Emerging Technologies, Whistler, Canada, Jun 16, 2011.

K. Takahata, "Microdevices Enabled by Nontraditional Materials and Micromachining," 15th Annual Meeting of the Pacific Center for Advanced Materials (PCAMM), University of British Columbia, Vancouver, Canada, Dec 11, 2010.

K. Takahata, "MEMS & Microfabrication Research at Takahata Lab," Department of Micro Engineering, Kyoto University, Japan, Aug 10, 2010.

K. Takahata, "MEMS Enabled by Nontraditional Materials and Micromachining," Department of Micro System Technology, Ritsumeikan University, Japan, Aug 9, 2010.

K. Takahata, "Advanced Micro-EDM technologies and applications," Department of Micro System Technology, Ritsumeikan University, Japan, Dec 15, 2008.

K. Takahata, A. DeHennis, K.D. Wise, Y.B. Gianchandani, "A Wireless Microsensor Utilizing a Micromachined Antenna Stent and Pressure Sensors for Monitoring Flow and Pressure in a Blood Vessel," WIMS Seminar, University of Michigan, Ann Arbor, Jan 20, 2004.

K. Takahata, Y.B. Gianchandani, "Micro-Electro-Discharge Machining As A Batch Fabrication Technology," WIMS Seminar, University of Michigan, Ann Arbor, May 21, 2002.

K. Takahata, S. Aoki, "Micromachining Based on Micro Electro-Discharge Machining," KEC Joho, No. 172, 2000, pp. 21-24. (in Japanese)

K. Takahata, S. Aoki, "Micromachining Using Micro Electro-Discharge Machining," Proc. 1st SEMI Micromachine Seminar, 1999, pp. 3-6. (in Japanese)

K. Takahata, S. Aoki, "Micromachining and Micro Surface Finishing Method," Proc. 26th JSDMT Molding Technology Seminar, 1996, pp. 41-45. (in Japanese)

Patents

Issued

Y.B. Gianchandani, K. Takahata, "Electromagnetic Flow Sensor Device," University of Michigan, U.S. Patent No. 7922667, issued 4/12/2011

K. Takahata, “Flexible Inductive Sensor” 3M Company, U.S. Patent No. 7498802 issued 3/3/2009

Y.B. Gianchandani, K. Takahata, K.D. Wise, A. DeHennis, “Antenna Stent Device for Wireless, Intraluminal Monitoring,” University of Michigan, Ann Arbor, U.S. Patent No. 7452334, issued 11/18/2008

Y.B. Gianchandani, L.L. Chu, K. Takahata, P. Selvaganapathy, J.L. Shohet, "Micromachined Probe Apparatus and Methods for Making and Using Same to Characterize Liquid in a Fluidic Channel and Map Embedded Charge in a Sample on a Substrate," University of Michigan, Ann Arbor, U.S. Patent No. 7116115 issued 10/3/2006.

K. Takahata, N. Shimizu, A. Ono, T. Asano, N. Shibaike, “Manufacture of Tool Electrode for Electric Discharge Machining and Electric-Discharge Machining Method Therewith,” Matsushita Electric Industrial Co. Ltd., Japanese Patent No. 3750268 issued 3/1/2006.

Y.B. Gianchandani, K. Takahata, "Micro-Electro-Discharge Machining Method and Apparatus," Wisconsin Alumni Research Foundation, U.S. Patent No. 6624377 issued 9/23/2003.

Y.B. Gianchandani, K. Takahata, "Micro-Electro-Discharge Machining Utilizing Semiconductor Electrodes," Wisconsin Alumni Research Foundation, U.S. Patent No. 6586699 issued 7/1/2003.

N. Furuya, T Ono, N. Horiuchi, K. Yamanaka, T. Miyata, K. Takahata, "Discharge-Pumped Gas Laser with Independent Preionizing Circuit," Matsushita Electric Industrial Co. Ltd., U.S. Patent No. 5293390, issued 5/8/1994.

T. Ono, N. Horiuchi, K. Yamanaka, K. Takahata, N. Furuya, T. Miyata, "Discharge-Pumped Gas Laser with Baffle Partition for Controlled Laser Gas Flow at Preionizers," Matsushita Electric Industrial Co. Ltd., U.S. Patent No. 5239553, issued 8/24/1993.

Published/Pending (partial list)

K. Takahata, "Inductive Sensor," 3M, USA.

Y.B. Gianchandani, K. Takahata, "Assembly and Planar Structure for Use therein which is Expandable into a 3-D Structure such as a Stent and Device for Making the Planar Structure," University of Michigan, Ann Arbor, USA.

M. Takahashi, K. Takahata, "Flattening Method," Matsushita Electric Industrial Co., Japan.

K. Takahata, "Method of Manufacturing for Punching Tool," Matsushita Electric Industrial Co., Japan.

N. Wada, K. Takahata, "Nozzle Hole Machining Method," Matsushita Electric Industrial Co., Japan.

K. Takahata, K. Otsuka, "Method and Device for Flattening Machining," Matsushita Electric Industrial Co., Japan.

K. Takahata, "Manufacture of Electrode for Working Tool and Machining Method," Matsushita Electric Industrial Co., Japan.

K. Takahata, "Electric Discharge Machining Method and Its Device," Matsushita Electric Industrial Co., Japan.

K. Takahata, "V-Shaped Groove Forming Method and Manufacture of Tool to be Used for That Method," Matsushita Electric Industrial Co., Japan.

K. Takahata, N. Shibaike, N. Shimizu, A. Ono, "Method and Device for Surface Machining," Matsushita Electric Industrial Co., Japan.

N. Shimizu, S. Maeda, K. Takahata, A. Ono, N. Shibaike, "Micro-Part Assembling Method," Matsushita Electric Industrial Co., Japan.

K. Takahata, S. Aoki, "Method and Device for Mirror Finish," Matsushita Electric Industrial Co., Japan.