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Author Martinez, E.D.; Lohr, J.H.; Sirena, M.; Sanchez, R.D.; Pastoriza, H. url  doi
openurl 
  Title Silver nanowires in poly(methyl methacrylate) as a conductive nanocomposite for microfabrication Type Journal Article
  Year 2016 Publication Flexible and Printed Electronics Abbreviated Journal  
  Volume 1 Issue 3 Pages 035003  
  Keywords  
  Abstract A novel nanocomposite resist is presented based on AgNWs dispersed in poly(methyl methacrylate). It is shown that this nanocomposite resist displays sheet resistances below 10 Ω sq −1 for concentrations of AgNWs higher than ##IMG## [http://ej.iop.org/images/2058-8585/1/3/035003/fpeaa3d4dieqn1.gif] {$4 \% {\rm{wt}}$} and can be used for a wide range of microfabrication techniques. The resist can act as a conductive ink that cures at room temperature, form thin films with low sheet resistances, and be used in fast replication methods derived from soft lithography. Furthermore, it can be applied for nano-scale fabrication via electron beam lithography (EBL) on different substrates, including flexible and insulating materials, providing a straightforward method to avoid charging effects. This, being the first report about a nanocomposite resist based on AgNWs for EBL, describes a simple procedure to account for suspended nanowires, forming bridges, nanocantilevers and more complex nanostructures. A wide range of opportunities opens for the single-step fabrication of electronic components in the nano and micro scale.  
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  Series Volume Series Issue Edition  
  ISSN 2058-8585 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number (up) BT @ hernan @ Serial 733  
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Author Salazar Alarcón, L. and Martínez,E. D. and Rodríguez, L. M. and Pastoriza, H. doi  openurl
  Title Topographical and Physicochemical Contrast in Photopatterned SU-8 Films for Microfabrication of Multilayer Structures Type Journal Article
  Year 2016 Publication Advances in Materials Science and Engineering Abbreviated Journal  
  Volume 2016 Issue Pages 5278102  
  Keywords  
  Abstract During SU-8 standard photolithography process, a patterned topography is formed with a characteristic height profile produced by the different shrinkage of the UV exposed and masked regions. We study the change of wettability, film solubility, and topographic modifications on SU-8 films of different thicknesses and show its relevance in the formation of spinning-flow arrays on top layers made from positive photoresists. Also, considerable contrast in film solubility and surface energy as observed from contact angle measurements is produced. Interface diffusion of the photoresists was also observed and followed by Rutherford Back Scattering. We discuss the derivations of the mentioned effects concerning the limitations to multilayered microfabrication processes and possibilities to take advantage of the surface profiles obtained.  
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  Publisher Hindawi Place of Publication Editor  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1687-8434 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number (up) BT @ hernan @ Serial 731  
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Author del Corro, P. G.; Imboden, M.; Bishop, D. J.; Pastoriza, H. url  doi
openurl 
  Title Comb Drive Designs With Minimized Levitation Type Journal Article
  Year 2016 Publication Journal of Microelectromechanical Systems Abbreviated Journal Journal of Microelectromechanical Systems  
  Volume 25 Issue 6 Pages 1025-1032  
  Keywords driver circuits; electrostatic actuators; microfabrication; Mems; capacitive comb drive design; comb finger polarity; comb geometry optimization; control electrode; distance 3.6 mum; electric field; electrostatic actuation; levitation effect elimination; polyMUMP technology; vertical force suppression; voltage 80 V; Capacitance; Force; Levitation; Micromechanical devices; Mobile communication; Springs; Substrates; Mems; actuators; comb drives; levitation  
  Abstract This paper presents two capacitive comb drive

designs for electrostatic actuation of MEMS with the aim to

eliminate the levitation effect often observed in such systems.

By placing a shield over the comb drive fingers, it is possible

to balance the electric field and suppress vertical forces while

maintaining the desired lateral motion. By optimizing the comb

geometry, we demonstrate that our approach is able to reduce the

levitation by an order of magnitude and unwanted coupling of

motion from out-of-plane to in-plane by a factor of 7 compared

with standard comb architectures fabricated using PolyMUMPs

technology, without the need of alternating comb finger polarities

or additional control electrodes. Levitation was reduced to

160 nm, for 3.6-µm lateral displacement at a driving voltage

of 80 V.
 
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  ISSN 1057-7157 ISBN Medium  
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  Notes Approved no  
  Call Number (up) BT @ hernan @ Serial 744  
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Author Morhell, N.; Pastoriza, H. url  doi
openurl 
  Title Power law fluid viscometry through capillary filling in a closed microchannel Type Journal Article
  Year 2016 Publication Sensors and Actuators B: Chemical Abbreviated Journal  
  Volume 227 Issue Pages 24-28  
  Keywords Microviscometer; Closed channel; Power law fluid; Non-Newtonian viscosity  
  Abstract In this work we analyze the capillary filling dynamics of non-Newtonian fluids that can be modeled with a power law constitutive equation. We solve the Poiseuille equations for an hydrophilic closed channel where capillary pressures drives the fluid in until a rest position given by the barometric pressure is reached. We show that this dynamics can be used to measure both the coefficient k and exponent n, that describes the power law fluid viscosity and we ran tests on Soda Lime Glass microchannels. Using a simple experimental setup with a USB Microscope and a custom image processing software we were able to measure the power law parameters of whole blood, wall varnish and DI water. The exponents were also obtained from the velocity profiles inside the microchannel using a custom μPIV setup matching both results with those measured with a standard Brookfield Rotational Microviscometer.  
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  Series Volume Series Issue Edition  
  ISSN 0925-4005 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number (up) BT @ hernan @ Serial 723  
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Author Franco, D.G.; Sarmiento-Chavez, A.; Schenone, N.; Allcca, A.E.L.; Berisso, M.G.; Fasano, Y.; Guimpel, J. url  doi
openurl 
  Title Characterization of the Nb-B Superlattice System Type Journal Article
  Year 2016 Publication Physica C: Superconductivity and its Applications Abbreviated Journal  
  Volume 531 Issue Pages 93-97  
  Keywords Superlattice; Superconductivity; Transition Edge Sensors  
  Abstract Abstract

We study the growth, stacking and superconducting properties of Nb and B thin films and superlattices. The interest in these resides in their possible use in transition edge neutron sensors. The samples were grown by magnetron sputtering over Si (100) substrates. The X-ray diffraction patterns for all Nb containing samples show a Nb (110) preferential orientation. From the low-angle X-ray reflectivity we obtain information on the superlattice structure. The superconducting transition temperatures of the superlattices, obtained from the temperature dependence of the magnetization, are higher than those of single Nb films of similar thickness. The temperature dependence of the perpendicular and parallel upper critical fields indicate that the superlattices behave as an array of decoupled superconducting Nb layers.
 
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  Series Volume Series Issue Edition  
  ISSN 0921-4534 ISBN Medium  
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  Notes Approved no  
  Call Number (up) BT @ jguimpel @ Serial 743  
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Author Sereni, J.G. doi  openurl
  Title Magnetic Systems: Specific Heat Type Journal Article
  Year 2016 Publication Reference Module in Materials Science and Materials Engineering Abbreviated Journal  
  Volume 2016 Issue Pages 4986  
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  Notes Approved no  
  Call Number (up) BT @ pedrazp @ Serial 759  
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Author Sereni, J. G. openurl 
  Title La investigación: una historia de nunca acabar Type Journal Article
  Year 2016 Publication Ciencia e Investigación, Reseñas Abbreviated Journal  
  Volume 4 Issue Pages 47  
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  Notes Approved no  
  Call Number (up) BT @ pedrazp @ Serial 760  
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Author Pérez, M.; Lipovetzky, J.; Sofo Haro, M.; Sidelnik, I.; Blostein, J. J.; Alcalde Bessia, F.; Gómez Berisso, M. openurl 
  Title Particle detection and classification using commercial off the shelf CMOS image sensors Type Journal Article
  Year 2016 Publication Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Abbreviated Journal  
  Volume 827 Issue Pages 171  
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  Call Number (up) BT @ pedrazp @ Serial 754  
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Author Dellavale, D.; Roselló, J. M. openurl 
  Title Cross-frequency coupling and phase synchronization in nonlinear acoustics Type Journal Article
  Year 2016 Publication Proceedings of Meetings on Acoustics Abbreviated Journal  
  Volume 28 Issue Pages 055001  
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  Notes Approved no  
  Call Number (up) BT @ pedrazp @ Serial 755  
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Author Schmoranzer, D., Jackson,M., Zemma, E., Luzuriaga,J. doi  openurl
  Title Double-Paddle Oscillators as Probes of Quantum Turbulence in the Zero Temperature Limit Type Journal Article
  Year 2016 Publication Journal of Low Temperature Physics Abbreviated Journal  
  Volume 185 Issue Pages  
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  Notes Approved no  
  Call Number (up) BT @ pedrazp @ Serial 745  
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