Graphene microcapsule arrays for combinatorial electron microscopy and spectroscopy in liquids

Published

April 27, 2017

Author(s)

Alexander Yulaev, Hongxuan Guo, Evgheni Strelcov, Lei Chen, Ivan Vlasssiouk, Andrei Kolmakov

Abstract

An atomic-scale thickness, molecular impermeability, low atomic number, and mechanical strength make graphene an ideal electron transparent membrane for scanning electron microscopy and spectroscopy in liquids. Here, we present a novel sample platform made of an array of thousands of identical isolated graphene-capped micro-channels with high aspect ratio. A combination of the global wide field of view with local imaging of a microchannel array allows for high throughput screening of liquid samples. We demonstrate the capabilities of this platform studying a pure water, a model electrochemical plating process and a beam induced crystal growth in liquid electrolyte solutions. The spectroscopic capabilities such as Auger and X-ray fluorescence analysis of liquids and immersed objects through the graphene membrane have been demonstrated

Citation

ACS Applied Materials and Interfaces

Volume

9

Issue

31

Pub Type

Journals

Download Paper

https://doi.org/10.1021/acsami.7b02824

Local Download

Keywords

graphene, ambient pressure electron microscopy, liquid cell, electrochemistry

Citation

Yulaev, A. , Guo, H. , Strelcov, E. , Chen, L. , Vlasssiouk, I. and Kolmakov, A. (2017), Graphene microcapsule arrays for combinatorial electron microscopy and spectroscopy in liquids, ACS Applied Materials and Interfaces, [online], https://doi.org/10.1021/acsami.7b02824, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=922377 (Accessed November 23, 2024)