Erratum: Long-Range Hydration Effect of Lipid Membrane Studied by Terahertz Time-Domain Spectroscopy [Phys. Rev. Lett. 106, 158102 (2011)]

Hishida, Mafumi; Tanaka, Kōichiro

doi:10.1103/physrevlett.111.269901

Cited by 10 publications

(20 citation statements)

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“…Recent progress in the field of ultrafast laser technology, allowing spectroscopy in the THz (10 12 Hz) frequency range, offers a solution to this dilemma. 15,16) We previously applied this technique to biomolecular systems, i.e., lipid bilayer membranes, the basic building blocks of biomembranes, 17) and in combination with X-ray scattering to observe the stacking structure, we were able to clarify the precise hydration state of a lipid membrane and revealed that the overall hydration layer has a longer range than the previously observed first hydration shell, extending up to 1 nm from the surface. This result confirmed that THz spectroscopy gives the 2/19 DRAFT information of overall hydration state with including the slightly perturbed hydration water, in addition to the previously observed first hydration shell.…”

Section: Introductionmentioning

confidence: 93%

Cooperativity between Water and Lipids in Lamellar to Inverted-Hexagonal Phase Transition

et al. 2014

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It has been unclear whether the role of water in the self-assembly of soft materials and biomolecules is influential or water is just a background medium. Here we investigate the correlation between hydration state of lipid membrane and structural phase transition of the membrane between lamellar and inverted-hexagonal phases, as an intermediate process of membrane fusion, by using the complementary techniques of X-ray scattering and terahertz (THz) spectroscopy. By comparing two lipid species, our results indicate that the structural changes of the lipid membrane depend on the behavior of the surrounding water, especially in the second hydration layer, in addition to the molecular shape of lipids. The water behaves differently at each membrane surface owing to the different hydrophilicities of the lipid head groups.

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Section: Introductionmentioning

confidence: 93%

Cooperativity between Water and Lipids in Lamellar to Inverted-Hexagonal Phase Transition

et al. 2014

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“…Terahertz (THz) radiation plays increasingly important roles in both scientific research and practical applications, such as material science, biomedicine, wireless communication, security imaging, etc. In all aspects, it is critical to have a wide band, fully controllable THz source with high power.…”

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confidence: 99%

Highly Efficient Spintronic Terahertz Emitter Enabled by Metal–Dielectric Photonic Crystal

Feng¹,

Zhou

et al. 2018

Advanced Optical Materials

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Spintronic terahertz (THz) emitter provides the advantages such as apparently broader spectrum, significantly lower cost, and more flexibility compared with the commercial THz emitters, and thus attracts great interest recently. In past few years, efforts have been made in optimizing the material composition and structure geometry, and the conversion efficiency has been improved close to that of ZnTe crystal. One of the drawbacks of the current designs is the rather limited laser absorption—more than 50% energy is wasted and the conversion efficiency is thus limited. Here, a novel device that fully utilizes the laser intensity and significantly improves the conversion efficiency is theoretically proposed and experimentally demonstrated. The device, which consists of a metal–dielectric photonic crystal structure, utilizes the interference between the multiple scattering waves to simultaneously suppress the reflection and transmission of the laser, and to reshape the laser field distributions. The experimentally detected laser absorption and THz generation show one‐to‐one correspondence with the theoretical calculations. The strongest THz pulse emission that presents a 1.7 times improvement compared to the currently designed spintronic emitter is achieved. This work opens a new pathway to improve the performance of spintronic THz emitter from the perspective of optics.

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“…Most membrane physiological functions involve transport of molecules within the membrane plane or between the membrane and the bulk compartments [2]. In all these situations, the dynamics of the membrane hydration water is believed to be important [3] and has been experimentally studied by radioactive label [4], NMR [5], inelastic neutron scattering [6], fluorescence spectroscopy [7], IR adsorption [8], and THz spectroscopy techniques [9]. Experimentally, the long-time dynamics of molecules in bacterial cells [10] and crowded fluids [11] as well as transmembrane-protein motion [11] have been found to deviate strongly from the ordinary diffusion law, which was suggested to be of physiological relevance in preventing prospective reaction partners to prematurely run away from each other [10].…”

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confidence: 99%

Anomalous Anisotropic Diffusion Dynamics of Hydration Water at Lipid Membranes

2013

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The diffusional water dynamics in the hydration layer of a dipalmitoylphosphatidylcholine bilayer is studied using molecular dynamics simulations. By mapping the perpendicular water motion on the ordinary diffusion equation, we disentangle free energetic and friction effects and show that perpendicular diffusion is strongly reduced. The lateral water motion exhibits anomalous diffusion up to several nanoseconds and is characterized by even further decreased diffusion coefficients, which by comparison with coarse-grained simulations are explained by the transient corrugated effective free energy landscape imposed by the lipids. This is in contrast to homogenous surfaces, where boundary hydrodynamic theory quantitatively predicts the anisotropy of water diffusion.

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Erratum: Long-Range Hydration Effect of Lipid Membrane Studied by Terahertz Time-Domain Spectroscopy [Phys. Rev. Lett. 106, 158102 (2011)]

Cited by 10 publications

References 0 publications

Cooperativity between Water and Lipids in Lamellar to Inverted-Hexagonal Phase Transition

Cooperativity between Water and Lipids in Lamellar to Inverted-Hexagonal Phase Transition

Highly Efficient Spintronic Terahertz Emitter Enabled by Metal–Dielectric Photonic Crystal

Anomalous Anisotropic Diffusion Dynamics of Hydration Water at Lipid Membranes

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