Novel Method for Controlled Wetting of Materials in the Environmental Scanning Electron Microscope
Artikel i vetenskaplig tidskrift, 2013

Environmental scanning electron microscopy has been extensively used for studying the wetting properties of different materials. For some types of investigation, however, the traditional ways of conducting in situ dynamic wetting experiments do not offer sufficient control over the wetting process. Here, we present a novel method for controlled wetting of materials in the environmental scanning electron microscope (ESEM). It offers improved control of the point of interaction between the water and the specimen and renders it more accessible for imaging. It also enables the study of water transport through a material by direct imaging. The method is based on the use of a piezo-driven nanomanipulator to bring a specimen in contact with a water reservoir in the ESEM chamber. The water reservoir is established by local condensation on a Peltier-cooled surface. A fixture was designed to make the experimental setup compatible with the standard Peltier cooling stage of the microscope. The developed technique was successfully applied to individual cellulose fibers, and the absorption and transport of water by individual cellulose fibers were imaged.

cellulose fiber

water

environmental scanning electron microscopy

water transport

contact-angle

swelling behavior

fibers

in situ

components

manipulator

Författare

Anna Olsson

Chalmers, Teknisk fysik, Eva Olsson Group

SuMo Biomaterials

Alexandra Nafari

Chalmers, Mikroteknologi och nanovetenskap (MC2)

Anke Sanz-Velasco

Chalmers, Teknisk fysik, Elektronikmaterial och system

Krister Svensson

Karlstads universitet

Stefan Gustafsson

SuMo Biomaterials

Chalmers, Teknisk fysik, Eva Olsson Group

Anne-Marie Hermansson

SuMo Biomaterials

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

Eva Olsson

Chalmers, Teknisk fysik, Eva Olsson Group

Microscopy and Microanalysis

1431-9276 (ISSN) 1435-8115 (eISSN)

Vol. 19 1 30-37

Ämneskategorier

Materialteknik

DOI

10.1017/S1431927612013815

Mer information

Senast uppdaterat

2018-05-23