Roger D. van Zee

Publications

A reference high-pressure CO2 adsorption isotherm for ammonium ZSM-5 zeolite: results of an interlaboratory study

July 26, 2018

Author(s):

Huong Giang T. Nguyen, Laura Espinal, Roger D. van Zee, Matthias Thommes, Blaza Toman, Sterlin Hudson, Enzo Mangano, Stefano Brandani, Katie Cychosz, Pieter Bertier, Feng Yang, Bernhard Krooss, Rebecca Siegelman, Jeffrey Long, Yoko Nakada, Kazu Nakai, Armin Ebner, James Ritter, Aaron Moran, Orhan Talu, Yi Huang, Krista Walton, Pierre Billemont, Guy de Weireld

This paper reports the results of an international interlaboratory study led by the National Institute of Standards and Technology (NIST) on the measurement of...

Experimental Aspects of Buoyancy Correction in Measuring Reliable High-Pressure Excess Adsorption Isotherms using the Gravimetric Method

November 21, 2017

Author(s):

Huong Giang T. Nguyen, Jarod C. Horn, Matthias Thommes, Roger D. van Zee, Laura Espinal

Photoacoustic Spectrometer for Accurate, Continuous Measurements of Atmospheric Carbon Dioxide Concentration

June 19, 2014

Author(s):

Joseph T. Hodges, Zachary D. Reed, Brent A. Sperling, Roger D. van Zee, James R. Whetstone, Keith A. Gillis

We have developed a portable photoacoustic spectrometer that offers routine, precise and accurate measurements of atmospheric carbon dioxide mixing ratios. The...

Rapid scan absorption spectroscopy using a waveform-driven electro-optic phase modulator in the 1.6- 1.65 υm region

September 25, 2013

Author(s):

Kevin O. Douglass, Stephen E. Maxwell, Gar W. Truong, Roger D. van Zee, Joseph T. Hodges, David A. Long, David F. Plusquellic

A method is reported for performing fast optical frequency scans over a bandwidth of 36.9 GHz and at a sweep rate of 40 kHz using a single second-order...

Frequency-agile, rapid scanning spectroscopy: absorption sensitivity of 2×10-12 cm-1 Hz-1/2 with an external-cavity diode laser

August 03, 2013

Author(s):

David A. Long, Gar Wing Truong, Roger D. van Zee, David F. Plusquellic, Joseph T. Hodges

We present ultra-sensitive measurements of molecular absorption using frequency-agile rapid scanning, cavity-ring down spectroscopy with an external-cavity...