Results 91 to 100 of about 2,088,891 (354)

Polaron Induced Deformations in Carbon Nanotubes [PDF]

, 2009
We compute for the first time full elastic deformations, as well as length, of self-trapped electronic states in carbon nanotubes of general radius and chirality, within the unifying framework of a recently introduced two field model for electromechanics
Cristiano Nisoli, H. Deresiewicz, M. S. Dresselhaus, O. Madelung, R. Saito, W. A. Harrison   +5 more
core   +1 more source

Advancing Research on Biomaterials and Biological Materials with Scanning Electron Microscopy under Environmental and Low Vacuum Conditions

Advanced Engineering Materials, EarlyView.
Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel, Lea Dierker, Antoine Eyram Kwame, Kim Nora Wagner, Jonas J. Unterholzner, Jan‐Henning Dirks, Dorothea Brüggemann   +6 more
wiley   +1 more source

Optical Nanotransmission Lines: Synthesis of Planar Left-Handed Metamaterials in the Infrared and Visible Regimes [PDF]

, 2006
Following our recent theoretical development of the concept of nano-inductors, nano-capacitors and nano-resistors at optical frequencies and the possibility of synthesizing more complex nano-scale circuits, here we theoretically investigate in detail the
Alù, Alù, Alù, Andrea Alù, El-Kady, Eleftheriades, Engheta, Engheta, Liu, Lohmann, Maier, Nader Engheta, O'Brien, Pendry, Podolskiy, Povinelli, Quinten, Shelby, Shvets, Shvets, Takahara, Tretyakov, Veselago, Yaghjian   +23 more
core   +3 more sources

3D nano-structures for laser nano-manipulation [PDF]

Beilstein Journal of Nanotechnology, 2013
The resputtering of gold films from nano-holes defined in a sacrificial PMMA mask, which was made by electron beam lithography, was carried out with a dry plasma etching tool in order to form well-like structures with a high aspect ratio (height/width ≈ 3–4) at the rims of the nano-holes. The extraordinary transmission through the patterns of such nano-
Seniutinas, Gediminas, Rosa, Lorenzo, Gervinskas, Gediminas, Brasselet, Etienne, Juodkazis, Saulius   +4 more
openaire   +4 more sources

Laser Metal Deposition of Aluminum Alloys 7075 and 5083 with the Addition of Volatile Alloying Elements through Powder Blending

Advanced Engineering Materials, EarlyView.
This study investigates laser metal deposition of aluminum alloys EN AW‐7075 and EN AW‐5083, using powder blending to compensate zinc and magnesium evaporation. In situ alloying and ex situ alloying with ZnAl12 and AZ91 preserve near‐standard compositions and improve mechanical properties.
Finn Bendixen, Anastasiya Toenjes, Annika Bohlen, Thomas Seefeld   +3 more
wiley   +1 more source

Safety assessment of the substance, titanium dioxide surface treated with fluoride‐modified alumina, for use in food contact materials

EFSA Journal, 2019
This scientific opinion of the EFSA Panel on Food Contact Materials, Enzymes and Processing Aids (CEP Panel) is a safety assessment of the additive titanium dioxide surface treated with fluoride‐modified alumina, a defined mixture of particles of which ■■
EFSA Panel on Food Contact Materials, Enzymes and Processing Aids (CEP), Vittorio Silano, José Manuel Barat Baviera, Claudia Bolognesi, Beat Johannes Brüschweiler, Andrew Chesson, Pier Sandro Cocconcelli, Riccardo Crebelli, David Michael Gott, Konrad Grob, Evgenia Lampi, Alicja Mortensen, Inger‐Lise Steffensen, Christina Tlustos, Henk Van Loveren, Laurence Vernis, Holger Zorn, Laurence Castle, Jean‐Pierre Cravedi, Martine Kolf‐Clauw, Maria Rosaria Milana, Karla Pfaff, Maria de Fátima Tavares Poças, Kettil Svensson, Detlef Wölfle, Eric Barthélémy, Gilles Rivière   +26 more
doaj   +1 more source

Effect Nano-SiC Additives on Physical and Mechanical Properties of Bauxite Refractories Used in Oil Treatment Units [PDF]

Engineering and Technology Journal, 2017
Refractory mixtures were prepared from: bauxite raw materials, grog and Kaolin. Different weight percentage of micro-SiC (5, 10, 15 and 20 wt%) and nano-SiC (2.5,5,7.5 and 10 wt%) was added to bauxite mixture to improve the refractories characteristics ...
S.A. Zaidan, H. H. Jasim
doaj   +1 more source

LAPORAN INDIVIDU PRAKTIK PENGALAMAN LAPANGAN (PPL) NAMA LOKASI : SMK YPKK 2 SLEMAN ALAMAT : JALAN JOGJA-MAGELANG KM. 10, WADAS, TRIDADI, SLEMAN 10 AGUSTUS – 12 SEPTEMBER 2015 [PDF]

, 2015
Kegiatan Praktik Pengalaman Lapangan (PPL) Universitas Negeri Yogyakarta secara terbimbing dilaksanakan mulai dari tanggal 10 Agustus sampai dengan 12 September 2015 yang berlokasi di SMK YPKK 2 Sleman yang beramatkan di Jl.
Nano Ratno Panca Pamungkas, Nano Ratno Panca Pamungkas
core  

Modified Scherrer Equation to Estimate More Accurately Nano-Crystallite Size Using XRD

, 2012
Scherrer Equation, L=Kλ/β.cosθ, was developed in 1918, to calculate the nano crystallite size (L) by XRD radiation of wavelength λ (nm) from measuring full width at half maximum of peaks (β) in radian located at any 2θ in the pattern.
A. Monshi, M. Foroughi, M. Monshi
semanticscholar   +1 more source

Enhanced Gamma Radiation Shielding Using Epoxy Quartz Fabric Composites Reinforced With CoCl2 Microparticles

Advanced Engineering Materials, EarlyView.
The growing demand for lightweight, nontoxic, and multifunctional gamma shielding materials has intensified efforts to find alternatives to conventional lead and aluminum‐based protectants. In this work, we develop epoxy quartz fabric composites reinforced with cobalt chloride (CoCl2) microparticles, fabricated via hand lay‐up with varying filler ...
Summan Urooge, Ahsan Irshad, Umar Jamil, Srosh Fazil, Khuram Liaqat, Kashif Shahzad, Fakhar Alam, Mehboob Alam   +7 more
wiley   +1 more source