Now showing items 261-280 of 361

    • Feasibility of Fiber Deposition Control by Secondary Electric Fields in Near Field Electrospinning 

      Martinez; Abecassis, Maxwell; Xu, Jiachen; Guo, Ping; Cao, Jian; Ehmann, Kornel F. (The American Society of Mechanical Engineers (ASME), 2015)
      Product miniaturization has become a trending technology in a broad range of industries and its development is being pushed by the requirements for complexity and resolution of micromanufactured products. However, there ...
    • Microthreading in Whirling 

      Serizawa, Masaki; Suzuki, Motohiro; Matsumura, Takashi (The American Society of Mechanical Engineers (ASME), 2015)
      Whirling is applied to machining of microscrews on thin wires. A micro whirling machine has been developed for this. In order to suppress the vibration of the workpiece, the wire is inserted in polyurethane tubes clamped ...
    • Design of a Compact Biaxial Tensile Stage for Fabrication and Tuning of Complex Micro and Nano scale Wrinkle Patterns 

      Saha, Sourabh K.; Culpepper, Martin L. (The American Society of Mechanical Engineers (ASME), 2015)
      Wrinkling of thin films is a straindriven process that enables scalable and lowcost fabrication of periodic microand nanoscale patterns. In the past, singleperiod sinusoidal wrinkles have been applied for thinfilm metrology ...
    • Graphene Oxide Colloidal Suspensions as Cutting Fluids for Micromachining—Part II: Droplet Dynamics and Film Formation 

      Chu, Bryan; Samuel, Johnson (The American Society of Mechanical Engineers (ASME), 2015)
      Part II of this paper is focused on studying the droplet spreading and the subsequent evaporation/filmformation characteristics of the graphene oxide colloidal solutions that were benchmarked in Part I. A highspeed imaging ...
    • Force Modeling of Five Axis Microball End Milling 

      Xu, Chi; Zhu, James; Kapoor, Shiv G. (The American Society of Mechanical Engineers (ASME), 2015)
      This paper presents a fiveaxis ballend milling force model that is specifically tailored to microscale machining. A composite cutting force is generated by combining two force contributions from a shearing/ploughing slipline ...
    • Direct Write Photolithography for Cylindrical Tooling Fabrication in Roll to Roll Microcontact Printing 

      Nietner, Larissa F.; Hardt, David E. (The American Society of Mechanical Engineers (ASME), 2015)
      The scaleup of microcontact printing (خ¼CP) to a rolltoroll technique for largescale surface patterning requires scalable tooling for continuous pattern printing with خ¼mscale features (e.g., 1–50 خ¼m). Here, we examine ...
    • Fabrication of Aluminum–SiC Laminate Nanocomposite by Ultrasonic Spray Deposited Sheet Bonding1 

      Bastwros, Mina; Kim, Gap (The American Society of Mechanical Engineers (ASME), 2015)
      One of the challenges in making layered metal composites reinforced at interfaces has been controlling the dispersion and microstructure of the reinforcement particles. The reinforcement elements are typically applied at ...
    • Laser Induced Plasma Micromachining Process: Principles and Performance 

      Pallav, Kumar; Saxena, Ishan; Ehmann, K. F. (The American Society of Mechanical Engineers (ASME), 2015)
      Laserinduced plasma micromachining (LIPMM) is a novel multimaterial and toolless micromachining process. It utilizes tightly focused ultrashort laser irradiation to generate plasma through laserinduced dielectric breakdown ...
    • Shielding Nozzle Design and Analysis for Atomization Based Cutting Fluid Systems in Micromachining 

      Lunardelli, Andressa; Wentz, John E.; Abraham, John P.; Plourde, Brian D. (The American Society of Mechanical Engineers (ASME), 2015)
      Atomizationbased cutting fluid systems (ACFs) are increasingly being used in micromachining applications to provide cooling and lubrication to the tool–chip interface. In this research, a shielding nozzle design is ...
    • Laser Energized Plasmonics for Nanopatterning Medical Devices 

      Molian, P. A. (The American Society of Mechanical Engineers (ASME), 2015)
      A scalable, prototype plasmonic nanomanufacturing system was designed, built, and tested for patterning nanostructures on the surfaces of drugeluting stents (DES), the objective being to prevent the latestent thrombosis ...
    • Microfabricated Instrumented Composite Stamps for Transfer Printing 

      Ahmed, Numair; Rogers, John A.; Ferreira, Placid M. (The American Society of Mechanical Engineers (ASME), 2015)
      Transfer printing is an emerging process that enables microand nanoscale heterogeneous materials integration for applications such as flexible displays, biocompatible sensors, stretchable electronics, and others. It transfers ...
    • Smooth Surface Fabrication Based on Controlled Meniscus and Cure Depth in Microstereolithography 

      Pan, Yayue; Chen, Yong (The American Society of Mechanical Engineers (ASME), 2015)
      In the layerbased additive manufacturing (AM) processes, a threedimensional (3D) model is converted into a set of twodimensional (2D) layers. Due to such conversion, one of the major problems in the layerbased AM processes ...
    • Optimization of Spiral Contours for Pulsed Laser Micromachining 

      Tshabalala, L. C.; Ntuli, C. P.; Makama, S. V.; Pityana, S. (The American Society of Mechanical Engineers (ASME), 2015)
      In this work, both qualitative and quantitative analytical approaches were used to optimize the spiral contouring technique for complete continuous micromachining of targets. During laser ablation, spiral contours on the ...
    • High Speed Fabrication of Microchannels Using Line Based Laser Induced Plasma Micromachining 

      Saxena, Ishan; Malhotra, Rajiv; Ehmann, Kornel; Cao, Jian (The American Society of Mechanical Engineers (ASME), 2015)
      Microtexturing of surfaces has various applications that often involve texturing over large (macroscale) areas with high precision and resolution. This demands scalability and speed of texturing while retaining feature ...
    • Theoretical and Experimental Study of Metallic Dot Agglomeration Induced by Thermal Dewetting 

      Yoshino, Masahiko; Li, Zhenxing; Terano, Motoki (The American Society of Mechanical Engineers (ASME), 2015)
      The authors previously developed a new fabrication method for a metal nanodot array, by combination of nanogroove grid patterning and thermal dewetting of metal deposited on a substrate. However, a comprehensive understanding ...
    • Warpage Characterization of Microchannels Fabricated by Injection Molding 

      أ‡etin, Barbaros; Koska, A. Koray; Erdal, Merve (The American Society of Mechanical Engineers (ASME), 2015)
      Massproduction of microfluidic devices is important for biomedical applications in which disposable devices are widely used. Injection molding is a wellknown process for the production of devices on a mass scale at lowcost. ...
    • A Study on Micromixing Utilizing Marangoni Effect Induced on Gas–Liquid Free Interfaces 

      Yamada, Takashi; Ono, Naoki (The American Society of Mechanical Engineers (ASME), 2015)
      Traditionally, micromixing has been thought to be governed by molecular diffusion. However, the authors consider that advection is important in the mixing enhancement and applicable to micromixing devices in many industrial ...
    • Microtexture Generation Using Controlled Chatter Machining in Ultraprecision Diamond Turning 

      Ahmed, Syed Adnan; Hoon Ko, Jeong; Subbiah, Sathyan; Hock Yeo, Swee (The American Society of Mechanical Engineers (ASME), 2015)
      This paper describes a new method of microtexture generation in precision machining through selfexcited vibrations of a diamond cutting tool. Conventionally, a cutting tool vibration or chatter is detrimental to the quality ...
    • Evolution of Nanoparticle Deposits Printed Using Electrospray 

      Brown, Nicholas A.; Gladstone, Jessica N.; Chiarot, Paul R. (The American Society of Mechanical Engineers (ASME), 2015)
      In an electrospray, large electric potentials are used to generate a spray of highly charged droplets. Colloidal dispersions, consisting of nanoparticles in a volatile solvent, can be atomized using electrospray. Printing ...
    • Influence of Process Errors on the Tool Load in Microblanking of Thin Metal Foils With Silicon Punches 

      Hildering, Sven; Engel, Ulf; Merklein, Marion (The American Society of Mechanical Engineers (ASME), 2015)
      The trend toward miniaturization of metallic microparts results in the need of highprecision production methods. Major challenges are, for example, downsizing of tools and adequate positioning accuracy within blanking. ...