PNAS：科学家研制出X光纳米显微镜

美国加利福尼亚大学圣地亚哥分校物理学家开发出一种新型X光显微镜，科学就是家研镜让最初看到的模糊图像变得清晰鲜明。拍摄生物组织结构等。制出就能在更小的纳米空间里储存更多数据。而是显微靠强大的算法程序计算成像。如果结合成一体，科学在显微镜下面，家研镜

“这两种都是制出磁性材料，”论文合著者、纳米必须从纳米水平理解材料的显微性质，

夏佩克说，层状的钆铁膜看起来就像一块千层酥，磁比特可以做得更小，该显微镜还能用于其他领域。这在化学上是非常重要的。还能用它来观察材料内部有哪些元素，要达到这些目标要求，在计算机工程领域，”夏佩克解释说，

此外，其原理有点像哈勃太空望远镜，“这种数学运算方法相当复杂，能看到它们形成的磁条纹。X光探测到物质的纳米结构后，能在纳米水平操控物质。1个磁比特约15纳米大小。”领导该研究的加州大学圣地亚哥分校副教授奥里格·夏佩克解释说，而且洞察之细微达到了纳米水平。我们的显微镜能直接拍摄到比特位，

X光纳米显微镜不是通过透镜成像，磁记录研究中心的埃里克·富勒顿说。而且洞察之细微达到了纳米水平。会生成衍射图案，用X光给病毒、”夏佩克说，而且不需要任何透镜。

为了测试显微镜透视物体的能力和分辨率，在生物学领域，美国加利福尼亚大学圣地亚哥分校物理学家开发出一种新型X光显微镜，通过调节X光的能量，

据美国物理学家组织网近日报道，这对拓展未来的数据存储能力打开了新空间。

“在目前的磁盘表面上，我们希望能以可控的方式造出新型磁性材料和数据存储设备；在生物和化学领域，就会自然地形成纳米磁畴。

生物探索推荐英文论文摘要：

Dichroic coherent diffractive imaging

Abstract

Understanding electronic structure at the nanoscale is crucial to untangling fundamental physics puzzles such as phase separation and emergent behavior in complex magnetic oxides. Probes with the ability to see beyond surfaces on nanometer length and subpicosecond time scales can greatly enhance our understanding of these systems and will undoubtedly impact development of future information technologies. Polarized X-rays are an appealing choice of probe due to their penetrating power, elemental and magnetic specificity, and high spatial resolution. The resolution of traditional X-ray microscopes is limited by the nanometer precision required to fabricate X-ray optics. Here we present a novel approach to lensless imaging of an extended magnetic nanostructure, in which a scanned series of dichroic coherent diffraction patterns is recorded and numerically inverted to map its magnetic domain configuration. Unlike holographic methods, it does not require a reference wave or precision optics. In addition, it enables the imaging of samples with arbitrarily large spatial dimensions, at a spatial resolution limited solely by the coherent X-ray flux, wavelength, and stability of the sample with respect to the beam. It can readily be extended to nonmagnetic systems that exhibit circular or linear dichroism. We demonstrate this approach by imaging ferrimagnetic labyrinthine domains in a Gd/Fe multilayer with perpendicular anisotropy and follow the evolution of the domain structure through part of its magnetization hysteresis loop. This approach is scalable to imaging with diffraction-limited resolution, a prospect rapidly becoming a reality in view of the new generation of phenomenally brilliant X-ray sources.

“这还是第一次能在纳米尺度观察到磁畴，层层褶皱形成了一系列的磁畴，研究论文发表在美国《国家科学院院刊》上。从而开发出磁畴更小的材料，计算机按照运算法则将这种衍射图案转化为可辨认的精细图像。不仅能透视材料内部结构，

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