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Title: Chemical Imaging with Cluster Ion Beams and Lasers

Abstract

The objective of this Department of Energy project has been to create a novel nanoscale three-dimensional molecule-specific imaging capability for characterization of a wide range of materials. Specific accomplishments are (1) demonstrated the generality of strong field ionization using femtosecond IR pulsed lasers to post-ionize sputtered molecules with the least amount of induced fragmentation, (2) constructed a novel multi-pass optic to more effectively sample the ablation plume created by the cluster ion beam, (3) utilized the chemistry of gas cluster ion beams containing 1000 – 10000 species to improve desorption ionization efficiency and probe the mechanism of this phenomenon using SFI, (4) for the first time, allowed images to be acquired quantitatively by separating the desorption step from the ionization step and characterizing complex multicomponent and multilayer structures. A critical part of this research has been to (1) demonstrate the unique capabilities of our technology by unraveling the architecture of complex aerosol particles with heterogeneous in-depth compositions and (2) to reveal the distribution of hydrocarbons and long chain fatty acids in b. braunii algal colonies at the single cell level, and elucidate the mechanism of hydrocarbon excretion. In general this major jump in 3-dimensional imaging capability is leading to applicationsmore » in many areas of energy-related research that have heretofore remained insoluble.« less

Authors:
 [1]
  1. Pennsylvania State Univ., University Park, PA (United States)
Publication Date:
Research Org.:
Pennsylvania State Univ., University Park, PA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1482797
Report Number(s):
DOE/ER/-15803-1
DOE Contract Number:  
FG02-06ER15803
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
molecule-specific imaging; 3-dimensional chemical imaging; mass spectrometry; cluster ion beams; molecular depth profiling; strong field ionization; aerosols

Citation Formats

Winograd, Nicholas. Chemical Imaging with Cluster Ion Beams and Lasers. United States: N. p., 2018. Web. doi:10.2172/1482797.
Winograd, Nicholas. Chemical Imaging with Cluster Ion Beams and Lasers. United States. doi:10.2172/1482797.
Winograd, Nicholas. Tue . "Chemical Imaging with Cluster Ion Beams and Lasers". United States. doi:10.2172/1482797. https://www.osti.gov/servlets/purl/1482797.
@article{osti_1482797,
title = {Chemical Imaging with Cluster Ion Beams and Lasers},
author = {Winograd, Nicholas},
abstractNote = {The objective of this Department of Energy project has been to create a novel nanoscale three-dimensional molecule-specific imaging capability for characterization of a wide range of materials. Specific accomplishments are (1) demonstrated the generality of strong field ionization using femtosecond IR pulsed lasers to post-ionize sputtered molecules with the least amount of induced fragmentation, (2) constructed a novel multi-pass optic to more effectively sample the ablation plume created by the cluster ion beam, (3) utilized the chemistry of gas cluster ion beams containing 1000 – 10000 species to improve desorption ionization efficiency and probe the mechanism of this phenomenon using SFI, (4) for the first time, allowed images to be acquired quantitatively by separating the desorption step from the ionization step and characterizing complex multicomponent and multilayer structures. A critical part of this research has been to (1) demonstrate the unique capabilities of our technology by unraveling the architecture of complex aerosol particles with heterogeneous in-depth compositions and (2) to reveal the distribution of hydrocarbons and long chain fatty acids in b. braunii algal colonies at the single cell level, and elucidate the mechanism of hydrocarbon excretion. In general this major jump in 3-dimensional imaging capability is leading to applications in many areas of energy-related research that have heretofore remained insoluble.},
doi = {10.2172/1482797},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {11}
}