Gas Flow

The World Leader in Environmental TEM

Technical Specs

TEM Sample Holder - Gas Flow - FEI Model
1300 Series – Single Channel 1300 Series – Multi-Channel
Pressure Range at Sample 1 atm up to 1.5 atm 10-6  mbar up to 1.5 atm
Experimental Gas Inlets 1 2–8*
Purge Capability Yes Yes
Gas Analysis Capability No Yes
Tubing System
All Metal All Metal
Biasing Contacts
3 or 4 contact (depending on model) 3 or 4 contact (depending on model)
Heating Temperature
Up to 1001°C Up to 1001°C
Holder Cleaning Bakeable to 160° C Bakeable to 160° C
EELS / EDS Compatible Yes Yes
TEM Compatibility TFS/FEI, JEOL, Hitachi, Zeiss TFS/FEI, JEOL, Hitachi, Zeiss

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Featured Research

Atomic dynamics of Ag/AgCl nanocatalyst

Atomistic interaction of gas-solid phase is important to understand the working mechanism of various catalyst materials. This is specially for heterostructures with different structures. Researchers at Argonne National Laboratory used Hummingbird Scientific’s Gas TEM system and observed atomic interaction of Ag/AgCl heterostructures during the redox process using the beam. In the experiment, Ag/AgCl nanocatalyst was first reduced to Ag, and then Ag was oxidized to different phases of silver oxide under different O2 partial pressures. Ag2O formed at low O2 partial pressure, whereas AgO formed at atmospheric pressure.

Reference: Yuzi Liu et al. Visualizing Redox Dynamics of a Single Ag/ AgCl Heterogeneous Nanocatalyst at Atomic Resolution. ACS Nano (2016). Abstract

Copyright © 2016 American Chemical Society


Reduction dynamics of Ag/AgCl under electron beam. Image copyright © 2016 American Chemical Society

Video Spotlight

Kirkendahl effect in Co nanoparticles

These experiments show the changes in nanoparticle morphology during oxidation of Co nanoparticles, which are crucial for making sense of the fundamental relationships involved in catalytic activity.

Left: Movie of the formation of hollow core oxide shells when Co nanoparticles are heated from 150°C to 250°C in 1 bar of flowing oxygen.

Reference: H.L. Xin, K. Niu, D.H. Alsem and H. Zheng.  “In-Situ TEM Study of Catalytic Nanoparticle Reactions in Atmospheric Pressure Gas Environment,” Microscopy & Microanalysis 19 (2013) pp. 1558. Abstract

Copyright © Microscopy Society of America, 2013

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Selected Publications

Karalee Jarvis, Chih-Chieh Wang, María Varela, Raymond R. Unocic, Arumugam Manthiram, and Paulo J. Ferreira. “Surface Reconstruction in Li-rich Layered Oxides of Li-ion Batteries,” Chemsitry of Materials (2017) Abstract
Jeffery A. Aguiar, Nooraldeen R. Alkurd, Sarah Wozny, Maulik K. Patel, Mengjin Yang, Weilie Zhou, Mowafak Al-Jassim, Terry G. Holesinger, Kai Zhu and Joseph J. Berry. “In situ investigation of halide incorporation into perovskite solar cells,” MRS Communications (2017) Abstract
Jeffery A. Aguiar, Sarah Wozny, Terry G. Holesinger, Toshihiro Aoki,d Maulik K. Patel, Mengjin Yang, Joseph J. Berry, Mowafak Al-Jassim, Weilie Zhou and Kai Zhu. “In situ investigation of the formation and metastability of formamidinium lead tri-iodide perovskite solar cells,” Energy Environ. Sci. (2016) Abstract
Yimin A. Wu, Liang Li, Zheng Li, Alper Kinaci, Maria K. Y. Chan, Yugang Sun, Jeffrey R. Guest, Ian McNulty, Tijana Rajh, and Yuzi Liu. “Visualizing Redox Dynamics of a Single Ag/AgCl Heterogeneous Nanocatalyst at Atomic Resolution,” ACS Nano (2016) Abstract
T.G. Holesinger, S. Dey, J.A. Aguiar, P.A. Papin, J.A. Valdez, Y. Wang, B.P. Uberuaga, R.H. Castro. “Correlative and dtnamic in-situ S/TEM characterization of heavily irradiated pyrochlores and fluorites,” Microscopy and Microanalysis Meeting (2015)
E.A. Stach, Y. Li, S. Zhao, A. Gamalski, K. Chen-Weigart, R. Tappero, J. Chen. “Characterizing working catalysts with correlated electron and photon probes,” Microscopy and Microanalysis Meeting (2015)
J. Murphy, N.J. Salmon, D.H. Alsem. “Imaging Nano-Structures at High Temperature and Pressure Using a Windowed TEM Gas Cell Speciment Holder,” Microscopy and Microanalysis Meeting (2015)
J. Murphy, N.J. Salmon, D.H. Alsem. “Imaging of Nano-Structures at High Temperatures and Pressures above One Atmosphere Using a Windowed TEM Gas Cell Specimen Holder,” Microscopy and Microanalysis Meeting (2015)
Y. Li, D. Zakharov, S. Zhao, R. Tappero, U. Jung, A. Elsen, Ph. Baumann, R.G. Nuzzo, E.A. Stach & A.I. Frenkel, Complex structural dynamics of nanocatalysts revealed in Operando conditions by correlated imaging and spectroscopy probes”. Nature Communications 6 (  Abstract
R. Colby, D.H. Alsem, A. Liyu, B. Kabius. “A method for measuring the local gas pressure within a gas-flow stage in situ in the transmission electron microscope ” Ultramicroscopy, Vol. 153 (2015) pp.55-60. Abstract
D.H. Alsem, N.J. Salmon, R.R. Unocic, G.M. Veith, and K.L. More. “In-situ liquid and gas transmission electron microscopy of nano-scale materials,” Microscopy and Microanalysis 18:S2 (2012) pp. 1158-1159. Abstract
H.L. Xin, K. Niu, D.H. Alsem, and H. Zheng. “In-Situ TEM Study of Catalytic Nanoparticle Reactions in Atmospheric Pressure Gas Environment,” Microscopy and Microanalysis 19:6 (2013) pp. 1558‒1568. Abstract
B. Colby, D.H. Alsem, and B. Kabius. “Estimating the Local Gas Pressure in a Gas Flow Cell Stage In-Situ using Electron Energy Loss Spectroscopy,” Microscopy and Microanalysis 19:S2 (2013) pp. 474 Abstract
D.H. Alsem, R. Colby, S.W. Chee, B. Kabius and N.J. Salmon, “In-situ Characterization of Catalytic Reactions Using Environmental Cell TEM,” Materials Research Society fall meeting, Boston, MA, December 2013. Abstract
D.H. Alsem, R.R. Unocic, G.M. Veith, K.L. More and N.J. Salmon. “Transmission Electron Microscopy of Nano-Scale Materials in Liquid and Gas Environments,” 12th European Microscopy Conference, Manchester, England, September 2012. Abstract


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