Now showing items 1-20 of 50

    • Laser Polishing of Micro-Machined Microfluidic Molds 

      Smith, Bryce B.; Wolf, Dennis M.; Turner, Kevin T.; Duffie, Neil A.; Li, Xiaochun; Pfefferkorn, Frank E. (5th International Conference on MicroManufacturing (ICOMM 2010), 2010-04-05)
      The objective of this paper is to explore the effective-ness of using a pulsed 1064 nm wavelength Nd:YAG laser to polish micro-machined metal molds. Polishing is desired to reduce the surface roughness of Polydimethylsiloxane ...
    • Comparing the adhesion of aluminum to nanocrystalline diamond and tungsten carbide: Consequences for micromanufacturing 

      Adiga, Vivekananda P.; Sanon, Saahil; Torres, Christopher D.; Heaney, Patrick J.; Sumant, Anirudha V.; Pfefferkorn, Frank E.; Carpick, Robert W. (5th International Conference on MicroManufacturing (ICOMM 2010), 2010-04-05)
      Tungsten carbide (WC) micro end mills exhibit a high wear rate, and when cutting soft materials such as aluminum, the chips tend to adhere to the cutting tool increasing the cutting force and leading to clogging and ...
    • Experimental Study of the Wear of Diamond Coated Micro End Mills 

      Torres, Christopher D.; Boyat, Alexandra M.; Adiga, Vivekananda P.; Sumant, Anirudha V.; Carpick, Robert W.; Pfefferkorn, Frank E. (5th International Conference on MicroManufacturing (ICOMM 2010)5th International Conference on MicroManufacturing (ICOMM 2010), 2010-04-05)
      The demand for the miniaturization of complex components has led to the growth of manufacturing methods capable of producing truly three dimensional parts using traditional en-gineering materials with favorable mechanical ...
    • Micro End Milling Polystyrene for Microfluidic Applications 

      Christ, Kevin T.; Smith, Bryce B.; Pfefferkorn, Frank E.; Turner, Kevin T. (5th International Conference on MicroManufacturing (ICOMM 2010), 2010-04-05)
      Microfluidic devices developed in research labs are often fabricated from poly(dimethylsiloxane) (PDMS) because techniques to manufacture devices via lithographic and molding techniques are well-established. However, ...
    • A Thin-Film Heat Flux Sensor Fabricated on Copper for Heat Transfer Measurements in Parallel Channel Heat Sinks 

      Jasperson, Benjamin A.; Pfefferkorn, Frank E.; Qu, Weilin; Turner, Kevin T. (5th International Conference on MicroManufacturing (ICOMM 2010), 2010-05-05)
      A combination of lithography-based microfabrication and micro end milling is used to manufacture thin-film resistance temperature detector (RTD) heat flux sensors on bulk copper substrates. The fabrication process uses ...
    • Pulsed Laser Micro Polishing: Surface Prediction Model 

      Vadali, Madhu; Ma, Chao; Duffie, Neil A.; Li, Xiaochun; Pfefferkorn, Frank E. (6th Annual Conference on MicroManufacturing (ICOMM 2011), 2011-03-07)
      This project is focused on developing physics-based models to predict the outcome of pulsed laser micro polishing (PL�P). Perry et al. have modeled PL�P as oscillations of capillary waves with damping resulting from the ...
    • Seedless, Etchless Deposition of Nanocrystalline Diamond Coatings for Performance Improvements of Micro End Mills using Carbon Ion Implantation 

      Torres, Christopher D.; Heaney, Patrick J.; Sridharan, Kumar; Cao, Guoping; Sumant, Anirudha V.; Carpick, Robert W.; Pfefferkorn, Frank E. (6th International Conference on MicroManufacturing (ICOMM 2011), 2011-03-07)
      This study compares the cutting performance of (1) as-received uncoated, (2) acid etched plus seeded plus nanocrystalline diamond (NCD) coated, (3) carbon ion implanted (CII) plus NCD coated, and (4) only CII micro end mills.
    • Effects of Laser Pulse Duration on Pulse Laser Micro Polishing 

      Vadali, Madhu; Ma, Chao; Duffie, Neil A.; Li, Xiaochun; Pfefferkorn, Frank E. (7th International Conference on MicroManufacturing (ICOMM 2012), 2012-03-12)
      Pulsed laser micro polishing (PL?P) has been shown to be an effective method of polishing micro metallic parts whose surface roughness can approach the feature size. This paper will describe the influence of laser pulse ...
    • Influence of Process Parameters on the Deformation of Copper Foils in Flexible-Pad Laser Shock Forming 

      Nagarajan, Balasubramanian; Castagne, Sylvie; Wang, Zhongke (8th International Conference on MicroManufacturing (ICOMM 2013), 2013-03-25)
      This paper investigates a new microforming technique, Flexible-Pad Laser Shock Forming (FPLSF), to produce mi-crofeatures on metallic foils without rigid punches and dies. FPLSF uses the laser-induced shock pressure and a ...
    • Electrochemical Polishing of Microcomponents 

      Berestovskyi, Dmytro; Soriaga, Manuel; Lomeli, Paul; James, Jon; Sessions, Brennon; Xiao, Han; Hung, Wayne (8th International Conference on MicroManufacturing (ICOMM 2013), 2013-03-25)
      Microcomponents can be fabricated by traditional methods like micromilling/drilling, or by nontraditional methods like electrical discharge micromachining (EDM), laser micromachining, or electrochemical micromachining ...
    • Effect of the tool locus on the cutting thickness in the ball endmill process 

      Takenori, Ono (8th International Conference on MicroManufacturing (ICOMM 2013), 2013-03-25)
    • Novel Machining Technique for Surface Patterning by Diamond Turning 

      Neo, Wee Keong; Huang, Rui; Kumar, A. Senthil; Rahman, Mustafizur (8th International Conference on MicroManufacturing (ICOMM 2013), 2013-03-25)
      This paper presents a novel method of machining image surface by diamond turning with fast tool servo (FTS). In the proposed methodology, three-dimensional pixel data [X, Y, Z] are extracted directly from a digital image ...
    • Observation of Tool Life of Micro End Mills 

      Martin, Blair; Morrow, Justin; Heaney, Patrick; Pfefferkorn, Frank (8th International Conference on MicroManufacturing (ICOMM 2013), 2013-03-25)
      Prediction of mechanical machining tool life is an integral part of commercial manufacturing. Failure of micro end mills is still not well understood, and further work needs to be done to accurately predict tool life. The ...
    • Effect of Thermocapillary Flow on the Surface Profile in Pulsed Laser Micro Polishing 

      Ma, Chao; Vadali, Madhu; Duffie, Neil A.; Pfefferkorn, Frank E.; Li, Xiaochun (8th International Conference on MicroManufacturing (ICOMM 2013), 2013-03-25)
      The objective of this paper is to understand and predict how surface profiles produced by thermocapillary flow change with material properties and process parameters during pulsed laser micro polishing. Thermocapillary ...
    • Prevention of Self-excited Vibrations in End-milling by Actively Tuning Fixture Stiffness using Fixed-fixed Beams Under Axial Load 

      Moore, Paul M.; Wiens, Gloria J. (8th International Conference on MicroManufacturing (ICOMM 2013), 2013-03-25)
      In this paper, the development of a novel workpiece holder for micro- and meso-scale applications is discussed. Through the use of applied tensile axial force on fixed-fixed support beams, the stiffness and clamping ...
    • The Application of Commercial Injection Molding Software to Micro-Component Design and Process Development 

      Khalilian, Sina A.; Park, Simon S.; Freiheit, Theodor I. (8th International Conference on MicroManufacturing (ICOMM 2013) Citation ICOMM 2013 No. 59, 2013-03-25)
      The use of software developed for the simulation of injection molding is evaluated through a case study of a micro-injection molded micro-pump component. The purpose of this evaluation is to determine if commercially ...
    • Manufacturing Guidelines for Micro Injection Molds 

      Garcia, Gerardo; Siller, Hector; Medrano-Tellez, Alexis (8th International Conference on MicroManufacturing (ICOMM 2013), 2013-03-25)
      The large demand for micro injected plastic parts can be solved with the reconversion of conventional mold machine shops in order to be suitable for performing micro manufacturing of molds and dies. This paper documents ...
    • Irregular, Adaptive Scan Trajectories for Pulsed Laser Micro Polishing 

      Vadali, Madhu; Ma, Chao; Li, Xiaochun; Duffie, Neil A.; Pfefferkorn, Frank E. (8th International Conference on MicroManufacturing (ICOMM 2013), 2013-03-25)
      The objective of this work is to generate irregular, smooth, adaptive laser scan trajectories for pulsed laser micro polishing (PL?P). Traditionally PL?P, like other surface finishing processes has used zigzag scan ...
    • High-speed Fabrication of Micro-channels using Line-based Laser Induced Plasma Micromachining (L-LIPMM) 

      Saxena, Ishan; Malhotra, Rajiv; Ehmann, Kornel; Cao, Jian (8th International Conference on MicroManufacturing (ICOMM 2013), 2013-03-25)
      Micro-texturing of surfaces has various applications that often involve texturing over large (macro-scale) areas with high precision and resolution. This demands scalability and speed of texturing while retaining feature ...
    • Numerical Modeling of Excimer Laser Curved Surface Ablation 

      Garg, Vivek; Marla, Deepak; Saxena, Ishan; Joshi, Suhas S. (8th International Conference on MicroManufacturing (ICOMM 2013), 2013-03-25)
      Laser ablation has been widely used in the fabrication of miniature parts. The technique is also used in the fabrication of micro lens or micro-curved surfaces which find potential applications in various optical, bio- ...