We reveal THz nonlinearity of liquid water using intense monocycle THz pulse. Single THz pulse response and THz pump-probe spectroscopy show the breaking and recovering of hydrogen bonding network in water molecules.
ISBN:
(纸本)9781557528896
We reveal THz nonlinearity of liquid water using intense monocycle THz pulse. Single THz pulse response and THz pump-probe spectroscopy show the breaking and recovering of hydrogen bonding network in water molecules.
This paper presents a novel technique for multi-hop localization by using mobility (MLM) in mixed line-of-sight/non-line-of-sight (LOS/NLOS) environments. In MLM, nodes equipped with ultra-wideband (UWB) radio first m...
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This paper presents a novel technique for multi-hop localization by using mobility (MLM) in mixed line-of-sight/non-line-of-sight (LOS/NLOS) environments. In MLM, nodes equipped with ultra-wideband (UWB) radio first move randomly for collecting time-of-arrival (TOA) measurements and then apply a modified biased Kalman filter (MBKF) designed for mitigating NLOS errors. NLOS bias in the measurements is further mitigated by using the shortest path distance (SPD) selection. Node positions are initialized by using multidimensional scaling (MDS) and then estimated by using iterative trilateration accompanied by an error accumulation management. Our simulation results demonstrate that the positioning accuracy of MLM outperforms previous methods in obstructed building environments with a limited anchor heard (AH).
We have investigated the interfacial termination layer dependence of the Schottky barrier height (SBH) for heterojunctions between polar La0.6Sr0.4MnO3 (LSMO) and nonpolar Nb-doped SrTiO3 (Nb:STO). The SBH for LSMO/Ti...
We have investigated the interfacial termination layer dependence of the Schottky barrier height (SBH) for heterojunctions between polar La0.6Sr0.4MnO3 (LSMO) and nonpolar Nb-doped SrTiO3 (Nb:STO). The SBH for LSMO/TiO2-Nb:STO is higher than the SBH predicted from the Schottky-Mott rule by 0.5 eV, indicating the formation of an interface dipole. In contrast, for LSMO/SrO-Nb:STO, the SBH is lower than that predicted from the Schottky-Mott rule by 0.4 eV. These results indicate that a change in the polarity of the polar LSMO overlayers results in inversion of the direction of the interface dipole. The modulation of SBH depending on the interfacial termination layer is reasonably explained by interfacial electronic reconstruction to prevent polar divergence.
We report the development of a novel molecular lithography methtod using our previously developed microreactor array (μRA)-based chip, which consists of uniformly arranged, femtoliter-size μRA molds [1]. In this met...
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We discuss cosmic ray behavior in an interplanetary magnetic flux (rope, especially cosmic ray penetration mechanism. We derive analytical solutions for cosmic ray behavior based on the equation of motion of a cosmic ...
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ISBN:
(纸本)9788392905714
We discuss cosmic ray behavior in an interplanetary magnetic flux (rope, especially cosmic ray penetration mechanism. We derive analytical solutions for cosmic ray behavior based on the equation of motion of a cosmic ray particle to investigate how to penetrate cosmic rays into the magnetic flux rope under an assumption of no scattering by small-scale magnetic field irregularities. The results show that behavior of the particle is determined by only one parameter;a ratio of Larmor radius at the flux rope axis to the flux rope radius. We calculate density and anisotropy distributions inside the magnetic flux rope from the solutions. A comparison between observed and calculated density and anisotropy distributions implies that only gyration process cannot account for observed anisotropy. We must consider diffusion process by small-scale magnetic field irregularities for cosmic ray penetration into the magnetic flux rope. This implies that a primary mechanism for high-rigidity cosmic rays to penetrate the magnetic flux ropes changes from diffusion dominant process near the Sun to gyration dominant process around the Earth as the magnetic flux rope expands and propagates through interplanetary space.
We combined a pump-probe technique with optical sum frequency microscopy, and demonstrated a time-resolved SF intensity image observation of an H Si(111) surface in ultrahigh vacuum (UHV) conditions. After pump-ligh...
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