LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 10

Search options

  1. Article ; Online: Optically Tunable Electrical Oscillations in Oxide-Based Memristors for Neuromorphic Computing.

    Nath, Shimul Kanti / Das, Sujan Kumar / Nandi, Sanjoy Kumar / Xi, Chen / Marquez, Camilo Verbel / Rúa, Armando / Uenuma, Mutsunori / Wang, Zhongrui / Zhang, Songqing / Zhu, Rui-Jie / Eshraghian, Jason / Sun, Xiao / Lu, Teng / Bian, Yue / Syed, Nitu / Pan, Wenwu / Wang, Han / Lei, Wen / Fu, Lan /
    Faraone, Lorenzo / Liu, Yun / Elliman, Robert G

    Advanced materials (Deerfield Beach, Fla.)

    2024  , Page(s) e2400904

    Abstract: The application of hardware-based neural networks can be enhanced by integrating sensory neurons and synapses that enable direct input from external stimuli. This work reports direct optical control of an oscillatory neuron based on volatile threshold ... ...

    Abstract The application of hardware-based neural networks can be enhanced by integrating sensory neurons and synapses that enable direct input from external stimuli. This work reports direct optical control of an oscillatory neuron based on volatile threshold switching in V
    Language English
    Publishing date 2024-03-22
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1474949-X
    ISSN 1521-4095 ; 0935-9648
    ISSN (online) 1521-4095
    ISSN 0935-9648
    DOI 10.1002/adma.202400904
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  2. Article ; Online: Ultrafast Excited-State Dynamics of V_{3}O_{5} as a Signature of a Photoinduced Insulator-Metal Phase Transition.

    Kumar, Nardeep / Rúa, Armando / Lu, Junqiang / Fernández, Félix / Lysenko, Sergiy

    Physical review letters

    2017  Volume 119, Issue 5, Page(s) 57602

    Abstract: The ultrafast elastic light scattering technique is applied to reveal the strong nonlinearity of V_{3}O_{5} associated with a photoinduced insulator-metal phase transition. Observation of time-domain relaxation dynamics suggests several stages of ... ...

    Abstract The ultrafast elastic light scattering technique is applied to reveal the strong nonlinearity of V_{3}O_{5} associated with a photoinduced insulator-metal phase transition. Observation of time-domain relaxation dynamics suggests several stages of structural transition. We discuss the nonequilibrium processes in V_{3}O_{5} in terms of photoinduced melting of a polaronic Wigner crystal, coalescence of V-O octahedra, and photogeneration of acoustical phonons in the low-T and high-T phases of V_{3}O_{5}. A molecular dynamics computation supports experimentally observed stages of V_{3}O_{5} relaxation dynamics.
    Language English
    Publishing date 2017-08-04
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.119.057602
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Bonn / Germany

    Z 4' 58/153: Show issues

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  3. Article ; Online: Large non-thermal contribution to picosecond strain pulse generation using the photo-induced phase transition in VO

    Mogunov, Iaroslav A / Lysenko, Sergiy / Fedianin, Anatolii E / Fernández, Félix E / Rúa, Armando / Kent, Anthony J / Akimov, Andrey V / Kalashnikova, Alexandra M

    Nature communications

    2020  Volume 11, Issue 1, Page(s) 1690

    Abstract: Picosecond strain pulses are a versatile tool for investigation of mechanical properties of meso- and nano-scale objects with high temporal and spatial resolutions. Generation of such pulses is traditionally realized via ultrafast laser excitation of a ... ...

    Abstract Picosecond strain pulses are a versatile tool for investigation of mechanical properties of meso- and nano-scale objects with high temporal and spatial resolutions. Generation of such pulses is traditionally realized via ultrafast laser excitation of a light-to-strain transducer involving thermoelastic, deformation potential, or inverse piezoelectric effects. These approaches unavoidably lead to heat dissipation and a temperature rise, which can modify delicate specimens, like biological tissues, and ultimately destroy the transducer itself limiting the amplitude of generated picosecond strain. Here we propose a non-thermal mechanism for generating picosecond strain pulses via ultrafast photo-induced first-order phase transitions (PIPTs). We perform experiments on vanadium dioxide VO
    Language English
    Publishing date 2020-04-03
    Publishing country England
    Document type Journal Article
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-020-15372-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  4. Article ; Online: Photoinduced surface plasmon switching at VO

    Kumar, Nardeep / Rúa, Armando / Aldama, Jennifer / Echeverría, Karla / Fernández, Félix E / Lysenko, Sergiy

    Optics express

    2018  Volume 26, Issue 11, Page(s) 13773–13782

    Abstract: Angle-resolved reflection, light scattering and ultrafast pump-probe spectroscopy combined with a surface plasmon-polariton (SPP) resonance technique in attenuated total reflection geometry was used to investigate the light-induced plasmonic switching in ...

    Abstract Angle-resolved reflection, light scattering and ultrafast pump-probe spectroscopy combined with a surface plasmon-polariton (SPP) resonance technique in attenuated total reflection geometry was used to investigate the light-induced plasmonic switching in a photorefractive VO
    Language English
    Publishing date 2018-05-28
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1491859-6
    ISSN 1094-4087 ; 1094-4087
    ISSN (online) 1094-4087
    ISSN 1094-4087
    DOI 10.1364/OE.26.013773
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  5. Article ; Online: Photoinduced insulator-to-metal transition and surface statistics of VO2 monitored by elastic light scattering.

    Lysenko, Sergiy / Fernández, Felix / Rúa, Armando / Sepúlveda, Nelson / Aparicio, Joaquin

    Applied optics

    2015  Volume 54, Issue 8, Page(s) 2141–2150

    Abstract: Measurements of ultrafast light scattering within a hemisphere are performed for statistical analysis of nonequilibrium processes in VO2 epitaxial film. A Gerchberg-Saxton error reduction algorithm is applied for accurate calculation of a surface ... ...

    Abstract Measurements of ultrafast light scattering within a hemisphere are performed for statistical analysis of nonequilibrium processes in VO2 epitaxial film. A Gerchberg-Saxton error reduction algorithm is applied for accurate calculation of a surface autocorrelation function from light scattering data and for partial reconstruction of a power spectral density function. Upon ultrafast photoinduced phase transition of VO2, the elastic light scattering reveals anisotropic grain-size-dependent dynamics. It was found that the transition rate depends on the optical absorption and orientation of VO2 grains with respect to polarization of the pump pulse. An observed stepwise evolution of surface autocorrelation length and transient anisotropy of the scattering field presumably originates from complex multistage transformation of VO2 lattice on a subpicosecond time scale.
    Language English
    Publishing date 2015-03-10
    Publishing country United States
    Document type Journal Article
    ISSN 1539-4522
    ISSN (online) 1539-4522
    DOI 10.1364/AO.54.002141
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  6. Article ; Online: Super-resolution in diffractive imaging from hemispherical elastic light scattering data.

    Lysenko, Sergiy / Sterligov, Valeriy / Gonçalves, Manuel / Rúa, Armando / Gritsayenko, Iaroslav / Fernández, Félix

    Optics letters

    2017  Volume 42, Issue 12, Page(s) 2263–2266

    Abstract: Angle-resolved hemispherical elastic light scattering techniques have been used to reconstruct the surface profile of two-dimensional photonic crystals with submicron resolution and metrological precision. Iterative algorithms permit subsequent ... ...

    Abstract Angle-resolved hemispherical elastic light scattering techniques have been used to reconstruct the surface profile of two-dimensional photonic crystals with submicron resolution and metrological precision. Iterative algorithms permit subsequent calculation of a surface autocorrelation function with additional numerical approximation of the power spectrum and then yield final reconstruction of the surface shape. The proposed method enables filtering out unwanted scattering background, precluding the convergence of phase-retrieval algorithms. The estimation of higher harmonics in the power spectrum provides the reconstruction of a realistic surface achieving subwavelength resolution.
    Language English
    Publishing date 2017-06-15
    Publishing country United States
    Document type Journal Article
    ISSN 1539-4794
    ISSN (online) 1539-4794
    DOI 10.1364/OL.42.002263
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  7. Article ; Online: Physical Origin of Negative Differential Resistance in V

    Das, Sujan Kumar / Nandi, Sanjoy Kumar / Marquez, Camilo Verbel / Rúa, Armando / Uenuma, Mutsunori / Puyoo, Etienne / Nath, Shimul Kanti / Albertini, David / Baboux, Nicolas / Lu, Teng / Liu, Yun / Haeger, Tobias / Heiderhoff, Ralf / Riedl, Thomas / Ratcliff, Thomas / Elliman, Robert Glen

    Advanced materials (Deerfield Beach, Fla.)

    2022  Volume 35, Issue 8, Page(s) e2208477

    Abstract: Oxides that exhibit an insulator-metal transition can be used to fabricate energy-efficient relaxation oscillators for use in hardware-based neural networks but there are very few oxides with transition temperatures above room temperature. Here the ... ...

    Abstract Oxides that exhibit an insulator-metal transition can be used to fabricate energy-efficient relaxation oscillators for use in hardware-based neural networks but there are very few oxides with transition temperatures above room temperature. Here the structural, electrical, and thermal properties of V
    Language English
    Publishing date 2022-12-30
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1474949-X
    ISSN 1521-4095 ; 0935-9648
    ISSN (online) 1521-4095
    ISSN 0935-9648
    DOI 10.1002/adma.202208477
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  8. Article: Investigation of dynamics in BMIM TFSA ionic liquid through variable temperature and pressure NMR relaxometry and diffusometry.

    Pilar, Kartik / Rua, Armando / Suarez, Sophia N / Mallia, Christopher / Lai, Shen / Jayakody, J R P / Hatcher, Jasmine L / Wishart, James F / Greenbaum, Steve

    Journal of the Electrochemical Society

    2018  Volume 164, Issue 8, Page(s) H5189–H5196

    Abstract: A comprehensive variable temperature, pressure and frequency multinuclear ( ...

    Abstract A comprehensive variable temperature, pressure and frequency multinuclear (
    Language English
    Publishing date 2018-07-21
    Publishing country England
    Document type Journal Article
    ISSN 0013-4651
    ISSN 0013-4651
    DOI 10.1149/2.0301708jes
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  9. Article ; Online: Do TFSA Anions Slither? Pressure Exposes the Role of TFSA Conformational Exchange in Self-Diffusion.

    Suarez, Sophia N / Rúa, Armando / Cuffari, David / Pilar, Kartik / Hatcher, Jasmine L / Ramati, Sharon / Wishart, James F

    The journal of physical chemistry. B

    2015  Volume 119, Issue 46, Page(s) 14756–14765

    Abstract: Multinuclear ((1)H, (2)H, and (19)F) magnetic resonance spectroscopy techniques as functions of temperature and pressure were applied to the study of selectively deuterated 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide (EMIM TFSA) ionic ... ...

    Abstract Multinuclear ((1)H, (2)H, and (19)F) magnetic resonance spectroscopy techniques as functions of temperature and pressure were applied to the study of selectively deuterated 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide (EMIM TFSA) ionic liquid isotopologues and related ionic liquids. For EMIM TFSA, temperature-dependent (2)H T1 data indicate stronger electric field gradients in the alkyl chain region compared to the imidazolium ring. Most significantly, the pressure dependences of the EMIM and TFSA self-diffusion coefficients revealed that the displacements of the cations and anions are independent, with diffusion of the TFSA anions being slowed much more by increasing pressure than for the EMIM cations, as shown by their respective activation volumes (28.8 ± 2.5 cm(3)/mol for TFSA vs 14.6 ± 1.3 cm(3)/mol for EMIM). Increasing pressure may lower the mobility of the TFSA anion by hindering its interconversion between trans and cis conformers, a process that is coupled to diffusion according to published molecular dynamics simulations. Measured activation volumes (ΔV(‡)) for ion self-diffusion in EMIM bis(fluoromethylsulfonyl)amide and EMIM tetrafluoroborate support this hypothesis. In addition, (2)H T1 data suggest increased ordering with increasing pressure, with two T1 regimes observed for the MD3 and D2 isotopologues between 0.1-100 and 100-250 MPa, respectively. The activation volumes for T1 were 21 and 25 cm(3)/mol (0-100 MPa) and 11 and 12 cm(3)/mol (100-250 MPa) for the MD3 and D2 isotopologues, respectively.
    MeSH term(s) Anions ; Diffusion ; Magnetic Resonance Spectroscopy/methods ; Molecular Conformation
    Chemical Substances Anions
    Language English
    Publishing date 2015-11-05
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ISSN 1520-5207
    ISSN (online) 1520-5207
    DOI 10.1021/acs.jpcb.5b08658
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  10. Book ; Thesis: Aprovechamiento de subproductos del tiburón (Orden Pleurotremata)

    Lacera Rua, Armando Alfredo

    (Instituto de Nutrición de Centro America y Panama. INCAP T ; 361)

    1982  

    Title translation Advantage of shark subproducts.
    Author's details Armando Alfredo Lacera Rua. --
    Series title Instituto de Nutrición de Centro America y Panama. INCAP T ; 361
    Language Spanish
    Size 115 p., [40] leaves :, ill. ;, 28 cm. --
    Publisher Centro de Estudios Superiores en Nutrición y Ciencias de Alimentos
    Publishing place Guatemala
    Document type Book ; Thesis
    Thesis / German Habilitation thesis Thesis (M.S.)--Universidad de San Carlos de Guatemala, 1982
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

To top