Development of a dynamic environmental transmission electron microscope for the study of light-induced dynamics in nanoscale materials

In this dissertation we present the development and characterization of a unique dynamic environmental transmission electron microscope (DETEM) which combines ultrafast laser spectroscopy with high-resolution electron microscopy. The novel instrument is capable of capturing snapshots of evolving nanostructures, such as individual nanoparticles, and soft materials undergoing temperature-, gas-, voltage-, or light-induced chemical transformations on time scales ranging from femtoseconds-milliseconds. We demonstrate the successful use of the new instrument by a comprehensive study of the picosecond-resolved dynamics of a three dimensional electron gas in vacuum subject to a static magnetic field, as well as preliminary single-nanoparticle studies of metal-oxide and metal-organic framework materials that undergo photoinduced phase transitions between structures with different electrical and magnetic properties.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Chemistry

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2022

Author dc:creator

• Sykes, Allan Eugene

Contributors dc:contributor

• van der Veen, Renske M
• Zuo, Jian-Min
• Jain, Prashant
• Vura-Weis, Josh

• Chemistry

Statement dc:rights

• Copyright 2021 Allan Sykes

Language dc:language

en, eng

Handle dc:identifier

http://hdl.handle.net/2142/113844

OAI record oai:identifier

https://www.ideals.illinois.edu/oai-pmh?verb=GetRecord&metadataPrefix=etdms&identifier=oai%3Awww.ideals.illinois.edu%3A2142%2F113844