Now showing items 1-20 of 2574

    • The 1-by-3 Tandem Differential Mobility Analyzer for Measurement of the Irreversibility of the Hygroscopic Growth Factor 

      Rosenoern, T.; Paulsen, D.; Martin, Scot (Taylor & Francis Ltd, 2009)
      A new instrument, namely the 1 × 3 tandem differential mobility analyzer (1 × 3-TDMA), has been developed. Its primary measurement is the irreversibility of the hygroscopic growth factor of aerosol particles. The instrument ...
    • (2×2) Reconstructions of the {111} Polar Surfaces of GaAs 

      Kaxiras, Efthimios; Bar-Yam, Yaneer; Joannopoulos, John D.; Pandey, K.C. (American Physical Society, 1986)
      Ab initio total-energy calculations were used to examine (2×2) reconstruction models for the (111) and (1¯1¯1¯) surfaces of GaAs. For the (111) surface the lowest-energy Ga-vacancy geometry is determined; several mechanisms ...
    • 3D Bioprinting of Vascularized, Heterogeneous Cell-Laden Tissue Constructs 

      Kolesky, David Barry; Truby, Ryan Landon; Gladman, Amelia Sydney; Busbee, Travis Alexander; Homan, Kimberly A.; Lewis, Jennifer (Wiley-Blackwell, 2014)
      A new bioprinting method is reported for fabricating 3D tissue constructs replete with vasculature, multiple types of cells, and extracellular matrix. These intricate, heterogeneous structures are created by precisely ...
    • 3D climate modeling of close-in land planets: Circulation patterns, climate moist bistability, and habitability 

      Leconte, J.; Forget, F.; Charnay, B.; Wordsworth, Robin; Selsis, F.; Millour, E.; Spiga, A. (EDP Sciences, 2013)
      The inner edge of the classical habitable zone is often defined by the critical flux needed to trigger the runaway greenhouse instability. This 1D notion of a critical flux, however, may not be all that relevant for ...
    • 3D Deformation Using Moving Least Squares 

      Zhu, Yuanchen; Gortler, Steven J. (2007)
      We present a 3d deformation method based on Moving Least Squares that extends the work by Schaefer et al. [Schaefer et al. 2006] to the 3d setting. The user controls the deformation by manipulating a set of point handles. ...
    • 3D modelling of the early martian climate under a denser \(CO_2\) atmosphere: Temperatures and \(CO_2\) ice clouds 

      Forget, F.; Wordsworth, Robin; Millour, E.; Madeleine, J.-B.; Kerber, L.; Leconte, J.; Marcq, E.; Haberle, R.M. (Elsevier BV, 2013)
      On the basis of geological evidence, it is often stated that the early martian climate was warm enough for liquid water to flow on the surface thanks to the greenhouse effect of a thick atmosphere. We present 3D global ...
    • 3D Multicolor Super-Resolution Imaging Offers Improved Accuracy in Neuron Tracing 

      Lakadamyali, Melike; Babcock, Hazen P.; Bates, Mark; Zhuang, Xiaowei; Lichtman, Jeff (Public Library of Science, 2012)
      The connectivity among neurons holds the key to understanding brain function. Mapping neural connectivity in brain circuits requires imaging techniques with high spatial resolution to facilitate neuron tracing and high ...
    • 3D Printing of Interdigitated Li-Ion Microbattery Architectures 

      Sun, Ke; Wei, Teng-Sing; Ahn, Bok Yeop; Seo, Jung Yoon; Dillon, Shen J.; Lewis, Jennifer (Wiley-Blackwell, 2013)
      3D interdigitated microbattery architectures (3D-IMA) are fabricated by printing concentrated lithium oxide-based inks. The microbatteries are composed of interdigitated, high-aspect ratio cathode and anode structures. Our ...
    • 3D Printing of Transparent and Conductive Heterogeneous Hydrogel-Elastomer Systems 

      Tian, Kevin; Bae, Jinhye; Bakarich, Shannon E.; Yang, Canhui; Gately, Reece D.; Spinks, Geoffrey M.; in het Panhuis, Marc; Suo, Zhigang; Vlassak, Joost J. (Wiley-Blackwell, 2017)
      Hydrogel-based ionic devices represent an alternative approach to stretchable electronics through use of soft ionic conductors that are both highly stretchable and transparent. However, these devices require the integration ...
    • 3D Printing Soft Materials: What Is Possible? 

      Trimmer, Barry; Lewis, Jennifer; Shepherd, Robert F.; Lipson, Hod (Mary Ann Liebert Inc, 2015)
    • 3D Reconstruction Using Labeled Image Regions 

      Ziegler, Remo; Matusik, Wojciech; Pfister, Hanspeter; McMillan, Leonard (Eurographics Association, 2003)
      In this paper we present a novel algorithm for reconstructing 3D scenes from a set of images. The user defines a set of polygonal regions with corresponding labels in each image using familiar 2D photo-editing tools. Our ...
    • 3D TV: A Scalable System for Real-Time Acquisition, Transmission, and Autostereoscopic Display of Dynamic Scenes 

      Matusik, Wojciech; Pfister, Hanspeter (Association for Computing Machinery, 2004)
      Three-dimensional TV is expected to be the next revolution in the history of television. We implemented a 3D TV prototype system with real-time acquisition, transmission, and 3D display of dynamic scenes. We developed a ...
    • 3D Ultrasound-Guided Motion Compensation System for Beating Heart Mitral Valve Repair 

      Yuen, Shelten G.; Kesner, Samuel Benjamin; Vasilyev, Nikolay; Del Nido, Pedro J.; Howe, Robert D. (Springer Verlag, 2008)
      Beating heart intracardiac procedures promise significant benefits for patients, however, the fast motion of the heart poses serious challenges to surgeons. We present a new 3D ultrasound-guided motion (3DUS) compensation ...
    • 3D-printed spherical dipole antenna integrated on small RF node 

      Adams, J.J.; Slimmer, Scott C.; Bernhard, J.T.; Lewis, Jennifer (Institution of Engineering and Technology (IET), 2015)
      New three-dimensional (3D) printing techniques enable the integration of an antenna directly onto the package of a small wireless sensor node. This volume-filling approach ensures near-optimal bandwidth performance of the ...
    • 3D-Printing of Lightweight Cellular Composites 

      Compton, Brett G.; Lewis, Jennifer (Wiley-Blackwell, 2014)
    • A 4-DOF Robot for Positioning Ultrasound Imaging Catheters 

      Loschak, Paul; Tenzer, Yaroslav; Degirmenci, Alperen; Howe, Robert D. (American Society of Mechanical Engineers, 2015)
      In this paper we present the design, fabrication, and testing of a robot for automatically positioning ultrasound imaging catheters. Our system will point ultrasound (US) catheters to provide real-time imaging of anatomical ...
    • 4He Liquid-Vapor Interface Below 1 K Studied Using X-Ray Reflectivity 

      Penanen, Konstantin; Fukuto, Masafumi; Heilmann, Ralf K.; Silvera, Isaac F.; Pershan, Peter S. (American Physical Society, 2000)
      The free surface of thin films of liquid helium adsorbed on a solid substrate has been studied using x-ray reflectivity. The film thickness and interfacial profile are extracted from the angular dependence of measured ...
    • Ab Initio Theory of Polar Semiconductor Surfaces. I. Methodology and the (22) Reconstructions of GaAs(111) 

      Kaxiras, Efthimios; Bar-Yam, Yaneer; Joannopoulos, John D.; Pandey, K.C. (American Physical Society, 1987)
      A methodology is developed for the theoretical study of the polar surfaces of compound semiconductors. It is based on the calculation of the total energy in the context of density-functional theory in the pseudopotential ...
    • Ab Initio Theory of Polar Semiconductor surfaces. II. (2x2) Reconstructions and Related Phase Transitions of GaAs(1¯1¯1¯) 

      Kaxiras, Efthimios; Bar-Yam, Yaneer; Joannopoulos, John D.; Pandey, K.C. (American Physical Society, 1987)
      The (2×2) reconstructions of GaAs(1¯ 1¯ 1¯) are studied with use of a theoretical approach based on the calculation of the total energy in the context of density-functional theory and the pseudopotential approximation. New ...
    • Abbreviated text input 

      Shieber, Stuart; Baker, Ellie (Association for Computing Machinery, 2003)
      We address the problem of improving the efficiency of natural language text input under degraded conditions (for instance, on PDAs or cell phones or by disabled users) by taking advantage of the informational redundacy in ...