Jonas Erik Warias, Lukas Petersdorf, Svenja Carolin Hövelmann, Rajendra Prasad Giri, Christoph Lemke, Sven Festersen, Matthias Greve, Philippe Mandin, Damien LeBideau, Florian Bertram, Olaf Magnus Magnussen, Bridget Mary Murphy
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引用次数: 0
Abstract
Understanding and controlling the structure and function of liquid interfaces is a constant challenge in biology, nanoscience and nanotechnology, with applications ranging from molecular electronics to controlled drug release. X-ray reflectivity and grazing incidence diffraction provide invaluable probes for studying the atomic scale structure at liquid-air interfaces. The new time-resolved laser system at the LISA liquid diffractometer situated at beamline P08 at the PETRA III synchrotron radiation source in Hamburg provides a laser pump with X-ray probe. The femtosecond laser combined with the LISA diffractometer allows unique opportunities to investigate photo-induced structural changes at liquid interfaces on the pico- and nanosecond time scales with pump-probe techniques. A time resolution of 38 ps has been achieved and verified with Bi. First experiments include laser-induced effects on salt solutions and liquid mercury surfaces with static and varied time scales measurements showing the proof of concept for investigations at liquid surfaces.
了解和控制液体界面的结构和功能是生物学、纳米科学和纳米技术领域的一项长期挑战,其应用范围从分子电子学到控制药物释放。X 射线反射和掠入射衍射为研究液气界面的原子尺度结构提供了宝贵的探针。位于汉堡 PETRA III 同步辐射光源 P08 光束线的 LISA 液体衍射仪上的新型时间分辨激光系统提供了带 X 射线探头的激光泵。飞秒激光与 LISA 衍射仪相结合,为利用泵浦探针技术研究液体界面在皮秒和纳秒时间尺度上的光诱导结构变化提供了独特的机会。已经实现了 38 ps 的时间分辨率,并用 Bi 进行了验证。首次实验包括对盐溶液和液态汞表面的激光诱导效应进行静态和不同时间尺度的测量,证明了在液体表面进行研究的概念。
期刊介绍:
Synchrotron radiation research is rapidly expanding with many new sources of radiation being created globally. Synchrotron radiation plays a leading role in pure science and in emerging technologies. The Journal of Synchrotron Radiation provides comprehensive coverage of the entire field of synchrotron radiation and free-electron laser research including instrumentation, theory, computing and scientific applications in areas such as biology, nanoscience and materials science. Rapid publication ensures an up-to-date information resource for scientists and engineers in the field.