3,464 research outputs found
Together in the Fight against Arthropod-Borne Diseases: A One Health Perspective
No full textArthropod-borne diseases represent a major risk for humans, livestock, pets and wildlife worldwide [...]
Data for Germanium-on-silicon waveguides operating at mid-infrared wavelengths up to 8.5um
No full textThe .xslx file contains the tabulated numerical data used to create the figures in "Germanium-on-silicon waveguides operating at mid-infrared wavelengths up to 8.5um",
by Milos Nedeljkovic, Jordi Soler Penades, Vinita Mittal, Ganapathy Senthil Murugan, Ali Z. Khokhar, Callum Littlejohns, Lewis G. Carpenter, Corin B. E. Gawith, James S. Wilkinson, and Goran Z. Mashanovich
published in Optics Express, accepted in September 2017.
The .txt file contains a brief description of the .xslx file.</span
Effect of Processing on In-Vitro Digestibility of Carbohydrates
No full textThis Dissertation / Report is the outcome of investigation carried out by the creator(s) / author(s) at the department/division of Central Food Technological Research Institute (CFTRI), Mysore mentioned below in this page
Demonstration of an etchless chalcogenide waveguide platform for mid-IR device applications
No full textWe demonstrate a straight pedestal mid-IR waveguide platform fabricated without any post-layer deposition processing using a simple wet etching process and thermal evaporation. The waveguides show excellent waveguiding up to 11.5 μm wavelength
Non-Abelian Spin Liquid in a Spin-One Quantum Magnet
No full textWe study a time-reversal invariant non-Abelian spin-liquid state in an SU(2) symmetric spin S=1 quantum magnet on a triangular lattice. The spin liquid is obtained by quantum disordering a noncollinear nematic state. We show that such a spin liquid cannot be obtained by the standard projective construction for spin liquids. We also study the phase transition between the spin liquid and the noncollinear nematic state and show that it cannot be described within the Landau-Ginzburg-Wilson paradigm.National Science Foundation (U.S.) (Grant No. DMR-0705255
Overscreened Kondo fixed point in S = 1 spin liquid
No full textWe propose a possible realization of the overscreened Kondo impurity problem by a magnetic s = 1/2 impurity embedded in a two-dimensional S = 1 U(1) spin liquid with a Fermi surface. This problem contains an interesting interplay between non-Fermi-liquid behavior induced by a U(1) gauge field coupled to fermions and a non-Fermi-liquid fixed point in the overscreened Kondo problem. Using a large-N expansion together with an expansion in the dynamical exponent of the gauge field, we find that the coupling to the gauge field leads to weak but observable changes in the physical properties of the system at the overscreened Kondo fixed point. We discuss the extrapolation of this result to a physical case and argue that the realization of overscreened Kondo physics could lead to observations of effects due to gauge fields.National Science Foundation (U.S.) (DMR 1005434)National Science Foundation (U.S.) (DMR 1104498
The Rise of Opaque Products as an Efficient Revenue Management Technique in the Travel Industry
No full textThis paper discusses and reviews in detail about opaque products which is also known as probabilistic goods, right from its inception and beginnings in early 2000’s. Opaque products are virtual goods and can be considered as a relatively new revenue management technique that has aided mainly the travel industry, specifically the airlines and hotels to increase their revenues and profits by intentionally withholding certain key information for some of the products to the customers. For Example, in airline industry the information may be product attributes like carrier, transfers, departure time etc. These products primarily trades consumption value for price savings with the buyers. Several models of opaque products which segment the market, thereby enhancing price discrimination and providing revenue enhancement, specifically in the airline industry have been described in this paper. A specific type of opaque product known as variable opaque product has also been described. Such variable opaque products allow the customer to pick and choose the attributes thereby varying the opaqueness. Thus, they have been found extremely advantageous and provide financial benefits to the airlines while providing welfare to the customers. The advantages of opaque selling models both to the customer as well as the airlines under certain types of environment has also been discussed along with its extensive applications in seat inventory control and inter-temporal pricing. Finally, the paper comes up with a few useful propositions that can be either tested empirically or modelled appropriately along with probable future work that should provide a vivid reader with the necessary spark that would aid him or her to contribute to further useful work in this area
High contrast mid-infrared chalcogenide waveguides for biosensing applications
No full textMid-infrared spectral band from 2 µm - 20 µm is ideal for label-free biosensing as the fundamental vibrations of many significant biomolecules take place in this region. Mid-infrared absorption spectroscopy using FTIR has been exploited for the last few decades to provide sensing capabilities for biomedical diagnostics. However, the sensitivity and the detection limit of the sample under test can be tremendously improved by using the evanescent field based integrated planar waveguide devices. In this paper, we present the fabrication and characterization results of chalcogenide waveguides transparent in the mid-infrared region for such applications. GeTe4 waveguides on ZnSe substrates were fabricated using lift-off technique. Lift-off resist was used to create the patterns on ZnSe substrate using photolithography and GeTe4 was deposited on these patterned samples using RF sputtering. The lift-off resist was stripped off to obtain the desired channels. The waveguides were characterized in both mid wave (2.5 µm - 3.7 µm) and long wave (6.4 µm - 7.5 µm) spectral bands using optical parametric oscillator-based laser source and quantum cascade laser, respectively [1]. Fig. 1 (a) and (b) show the cross-section and top view of the infrared camera images of the output facet of a GeTe4 channel waveguide showing light guidance at lambda = 3.5 µm and lambda = 6.5 µm, respectively
Long-wave IR Chalcogenide Integrated Photonic Devices without Post-deposition Processing
No full textWe have demonstrated a pedestal-based chalcogenide waveguide platform fabricated using simple Si micropatterning and thermal evaporation of chalcogenide materials. The waveguides were optically characterized in the long wave IR region between 7 and 12 μm and showed clear waveguiding throughout. Propagation losses as low as 0.5 dB/cm were measured up to a wavelength of 11 μm
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