排序方式: 共有41条查询结果,搜索用时 229 毫秒
11.
S. Matsuyama M. Shimura H. Mimura M. Fujii H. Yumoto Y. Sano M. Yabashi Y. Nishino K. Tamasaku T. Ishikawa K. Yamauchi 《X射线光谱测定》2009,38(2):89-94
To visualize the distributions of trace elements in biological samples such as tissues and cells at high spatial resolution, we developed a scanning x‐ray fluorescence microscope (SXFM) at SPring‐8, using a Kirkpatrick‐Baez mirror optics that enables achromatic and highly efficient focusing. To evaluate performance regarding its application to biological samples, the SXFM was used at x‐ray energy of 15 keV to observe NIH/3T3 cells in which adenosine triphosphate (ATP) synthase β (specifically localized at the mitochondria) were labeled with gold colloidal particles. Various elemental distributions were visualized at the single‐cell level, including those for P, S, Cl, Ca, Fe, Cu, Zn and Au, and we obtained high‐resolution elemental distribution maps by magnifying the labeled single mitochondrion. Maximum spatial resolution achieved in the experiments was sub‐100 nm. Copyright © 2008 John Wiley & Sons, Ltd. 相似文献
12.
13.
14.
15.
16.
Matsumoto Yutaka Takeo Yoko Egawa Satoru Yamaguchi Gota Yokomae Shunya Takei Masashi Yumoto Hirokatsu Koyama Takahisa Ohashi Haruhiko Tono Kensuke Yabashi Makina Mimura Hidekazu Kimura Takashi 《Optical Review》2022,29(1):7-12
Optical Review - A microfluidic device was developed for coherent diffraction imaging using an X-ray free-electron laser (XFEL-CDI). Liquid samples, which are separately packed in reservoirs of the... 相似文献
17.
18.
19.
Takumi Goto Satoshi Matsuyama Hiroki Nakamori Yasuhisa Sano Yoshiki Kohmura Makina Yabashi 《Synchrotron Radiation News》2016,29(4):32-36
Ultra-bright and high-coherence X-rays are now being used in synchrotron radiation facilities and X-ray free electron laser facilities. X-ray focusing techniques are essential to take full advantage of these excellent X-ray light sources. To meet the strong demand, high-quality X-ray focusing optics have been developed owing to the advancement of ultraprecision machining and measurement. State-of-the-art refractive lenses [1], zone plates [2], and Laue lenses [3] can be used to achieve X-ray focusing to a spot a few tens of nanometers. 相似文献
20.
Yamasaki A Imada S Higashimichi H Fujiwara H Saita T Miyamachi T Sekiyama A Sugawara H Kikuchi D Sato H Higashiya A Yabashi M Tamasaku K Miwa D Ishikawa T Suga S 《Physical review letters》2007,98(15):156402
Sm-based heavy-fermion compound SmOs4Sb12 has been investigated by soft x-ray (hnu=1070-1600 eV) and hard x-ray (HX; hnu=7932 eV) spectroscopy. The HX photoemission spectroscopy clearly demonstrates that the strongly mixed-valence state and the heavy-fermion state coexist in the bulk. It is found that the Sm valence decreases below 100 K, indicating that the Kondo coherence develops with approaching the proposed Kondo temperature. Our theoretical analyses suggest that the origin of the coexistence in SmOs4Sb12 is the coincidence of two conditions, namely, (i) the energy difference between Sm divalent and trivalent states is very small and (ii) the hybridization between Sm 4f and conduction electrons is weak. 相似文献