Name: Craig R Friedrich Rank: Professor  Highest Degree: Ph.D., Oklahoma State University (1987) Key words of Expertise: Micromechanical Systems, Micromachining, Design, Metrology  Director of Multi-Scale Technologies Institute (MuSTI) NSF Engineering Research Center for Wireless Integrated Microsystems Contact Email: craig@mtu.edu

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Research Interests

Micromechanical machining processes and microsystem design, nanosensing

Micromechanical machining processes are direct material removal processes with microcutting tools. They include milling, drilling, diamond machining, hot embossing, etc., to produce component features in the micrometer regime.  These processes are well suited for rapid prototyping at the microscale, for developing higher-order-geometry (HOG) packages, substrates, and molds for microcomponents, and for precision fixtures and shadow masks for material deposition processes.

Sample Publications

Friedrich,C, Avula,R, Gugale,S, “A Fluid Microconnector Seal for Packaging Applications,” Journal of Micromechanics and Microengineering, Vol. 15, 2005, pp.1115-1124.

Friedrich,C and Kulkarni,V, “Effect of Springback on Micromilling Forces,” Microsystems Technology Journal, Vol. 10, No. 6-7, 2004, pp. 472-477.

Arcand,B, Butala,N, Friedrich,C, “Design and Modeling of an Active Positioning Device for a Perimodular Cochlear Electrode Array,” Microsystems Technology Journal, Vol. 10, No. 6-7, 2004, pp.478-483.

Li,J, Friedrich,C, Keynton,R, “Design and Fabrication of a Miniaturized, Integrated, High Frequency Acoustical Lens-Transducer System,” Journal of Micromechanics and Microengineering, Vol. 12, No. 3, May 2002, pp.219-228.

Friedrich,C, “Micromechanical Machining of High Aspect Ratio Prototypes,” Microsystems Technology Journal, Vol. 8, No. 4/5, May 2002, pp.343-347.

Friedrich, CR, "Near-Cryogenic Machining of Polymethyl Methacrylate for Micromilling Tool Development," Journal of Materials and Manufacturing Processes, Vol. 15, No. 5, pp.667-678, 2001.

Friedrich, CR, Keynton, R, Vasile, M, and Warrington, R, "Development of a Core Curriculum in Miniaturization Technologies," Journal of Engineering Education 1998 Supplement, pp.567-574.

Friedrich,CR, Coane,PJ, Goettert,J, and Gopinathin,N, "Direct Fabrication of Deep X-ray Lithography Masks by Micromechanical Milling," Precision Engineering, (22)3, 1998, pp.164-173.

Friedrich,CR, Coane,PJ, Goettert,J, and Gopinathin,N, "Precision of Micromilled X-ray Masks and Exposures," Microsystems Technology Journal, (4)1, 1997, pp. 21-24.

Friedrich,CR and Coane,PJ, "Micromilling Development and Applications for Microfabrication," Journal of Microelectronic Engineering (35), 1997, pp.367-372.

Friedrich,CR, Fang, Ji, and Warrington,RO, "Micromechatronics and the Miniaturization of Structures, Devices and Systems," IEEE Transactions on Components Packaging and Manufacturing Technology, Part C (20)1, pp.31-38, 1997.

Vasile,MJ, Friedrich,CR, Kikkeri,B, and McElhannon,R, "Micron-Scale Machining:Tool Fabrication and Initial Results," Precision Engineering (19)2/3, pp.180-186, 1997.

Huang,PS and Friedrich,CR, "Precise Stress Analysis of Helical Filament-Wound Vessels: Part I - Theory," 8th International Conference on Pressure Vessel Technology (ICPVT-8), pp. 355-360, Montreal, Canada 1996.

Huang,PS and Friedrich,CR, "Precise Stress Analysis of Helical Filament-Wound Vessels: Part II- Numerical Results," 8th International Conference on Pressure Vessel Technology (ICPVT-8), pp.361-385,  Montreal, Canada 1996.

Friedrich,CR and Vasile,MJ, "The Micromilling Process for High Aspect Ratio Microstructures," Micro Systems Technology Journal, Vol. 2, No. 3, pp. 144-148, 1996.

Friedrich,CR and Vasile,MJ, "Development of the Micromilling Process for High Aspect Ratio Microstructures," Journal of Microelectromechanical Systems, Vol.5. No.1, March 1996, pp.33-38.

Frazier,AB, Friedrich,CR and Warrington,RO, "The Miniaturization Technologies: Past, Present, and  Future," IEEE Transactions on Industrial Electronics, Vol.42, No.5, October 1995, pp.423-430.

Gao,RX and Friedrich,CR, "Integrated Force Measurement for On?Line Cutting Geometry Inspection,"  IEEE Transactions on Instrumentation and Measurement, Vol.44, No.5, October 1995, pp.977-980.

Huang,P and Friedrich,CR, "A New Approach to Stress Analysis of Various Wound Vessels," ASME Journal of Pressure Vessel Technology, Vol.116, 11/94, pp.359-364.

Friedrich,CR and Kang,D, "Micro Heat Exchangers Fabricated by Diamond Machining," Journal of Precision Engineering, Vol.16, No.1, Jan. 1994,  pp.56-59.