石墨烯湿池中金纳米粒子的扫描电镜动态成像
Dynamic Imaging of Au-nanoparticles via Scanning Electron Microscopy in a Graphene Wet Cell
摘要：
液体环境中的高分辨率纳米成像对于研究生物和化学系统中的分子相互作用至关重要。特别是，电子显微镜是纳米级成像的黄金标准工具，但其高真空要求使应用于液体样品极具挑战性。在这里，我们提出了一种新的基于石墨烯的湿电池装置，其中可以直接在液体环境内进行高分辨率SEM（扫描电子显微镜）和能量色散X射线（EDX）分析。石墨烯是一种理想的膜材料，因为其高透明度，导电性和机械强度可以支持SEM的高真空和接地要求，同时实现最大的分辨率和信号。特别地，我们获得了在石墨烯湿电池内经历布朗运动的纳米颗粒的高分辨率（< 5 nm）SEM视频图像和在液体环境中的纳米颗粒组合物的EDX分析。我们获得的分辨率超过目前的传统氮化硅器件在更高的电子剂量下在SEM和TEM中成像。
英文摘要：
High resolution nanoscale imaging in liquid environments is crucial for studying molecular interactions in biological and chemical systems. In particular, electron microscopy is the gold-standard tool for nanoscale imaging, but its high-vacuum requirements make application to in-liquid samples extremely challenging. Here we present a new graphene based wet cell device where high resolution SEM (scanning electron microscope) and Energy Dispersive X-rays (EDX) analysis can be performed directly inside a liquid environment. Graphene is an ideal membrane material as its high transparancy, conductivity and mechanical strength can support the high vacuum and grounding requirements of a SEM while enabling maximal resolution and signal. In particular, we obtain high resolution (< 5 nm) SEM video images of nanoparticles undergoing brownian motion inside the graphene wet cell and EDX analysis of nanoparticle composition in the liquid enviornment. Our obtained resolution surpasses current conventional silicon nitride devices imaged in both SEM and TEM under much higher electron doses.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
