Results 41 to 50 of about 919,436 (348)

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

A High-resolution Non-detection of Escaping Helium in the Ultrahot Neptune LTT 9779b: Evidence for Weakened Evaporation

The Astrophysical Journal Letters
The recent discovery of “ultrahot” ( P < 1 day) Neptunes has come as a surprise: some of these planets have managed to retain gaseous envelopes despite being close enough to their host stars to trigger strong photoevaporation and/or Roche lobe overflow ...
Shreyas Vissapragada, Patrick McCreery, Leonardo A. Dos Santos, Néstor Espinoza, Andrew McWilliam, Noriyuki Matsunaga, Jéa Adams Redai, Patrick Behr, Kevin France, Satoshi Hamano, Charlie Hull, Yuji Ikeda, Haruki Katoh, Hideyo Kawakita, Mercedes López-Morales, Kevin N. Ortiz Ceballos, Shogo Otsubo, Yuki Sarugaku, Tomomi Takeuchi   +18 more
doaj   +1 more source

Synchrotron Infrared Spectroscopy of Microporous Materials

Makara Journal of Science, 2016
This review describes the ways in which synchrotron infrared radiation can be used to perform infrared spectroscopy on catalyst materials.
Russell F Howe
doaj   +1 more source

Original plant traceability of Dendrobium species using multi-spectroscopy fusion and mathematical models [PDF]

Royal Society Open Science, 2019
Dendrobium is the largest genus of orchids most of which have excellent medicinal properties. Fresh stems of some species have been consumed in daily life by Asians for thousands of years.
Ye Wang, Zhi-Tian Zuo, Heng-Yu Huang, Yuan-Zhong Wang   +3 more
doaj   +1 more source

Determination of molecular spectroscopic parameters and energy-transfer rates by double-resonance spectroscopy [PDF]

, 1990
The spectroscopy of small to medium-size polyatomic molecules can be extremely complex, especially in higher-lying overtone and combination vibrational levels. The high density of levels also complicates the understanding of inelastic collision processes,
Coy, S., Flannery, C., Foy, B., Hetzler, J., Klaassen, J., Mizugai, Y., Steinfeld, J. I.   +6 more
core   +1 more source

Near-infrared integral-field spectroscopy of HD209458b [PDF]

, 2006
We present first results of an exploratory study to use integral field spectroscopy to observe extrasolar planets. We focus on transiting "Hot Jupiters" and emphasize the importance of observing strategy and exact timing.
Angerhausen, Daniel, Iserlohe, Christof, Krabbe, Alfred   +2 more
core   +2 more sources

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

Near-Infrared Spectroscopy in Bio-Applications

Molecules, 2020
Near-infrared (NIR) spectroscopy occupies a specific spot across the field of bioscience and related disciplines. Its characteristics and application potential differs from infrared (IR) or Raman spectroscopy.
Krzysztof B. Beć, Justyna Grabska, Christian W. Huck   +2 more
doaj   +1 more source

Model for quantitative tip-enhanced spectroscopy and the extraction of nanoscale-resolved optical constants

, 2014
Near-field infrared spectroscopy by elastic scattering of light from a probe tip resolves optical contrasts in materials at dramatically sub-wavelength scales across a broad energy range, with the demonstrated capacity for chemical identification at the ...
Basov, D. N., Dominguez, Gerardo, Fogler, Michael M., Gainsforth, Zack, Goldflam, M. D., Kelly, Priscilla, McLeod, Alexander S., Thiemens, Mark, Westphal, Andrew J.   +8 more
core   +1 more source

Two-Dimensional Spectroscopy of Extended Molecular Systems: Applications to Energy Transport and Relaxation in an α-Helix [PDF]

, 2010
A simulation study of the coupled dynamics of amide I and amide II vibrations in an α-helix dissolved in water shows that two-dimensional (2D) infrared spectroscopy may be used to disentangle the energy transport along the helix through each of these ...
Backus E. H. G., Bloem R., Botan V., Brixner T., Cheng Y. C., Cho M., Davydov A. S., DeFlores L. P., DeFlores L. P., Didraga C., Dijkstra A. G., Fecko C. J., Fujisaki H., Gorbunov R. D., Ham S., Ham S., Hamm P., Hamm P., Hayashi T., Jansen T. l. C., Jansen T. l. C., Jansen T. l. C., Jansen T. l. C., Kurochkin D. V., Miyazawa T., Mukamel S., Nemeth A., Paarmann A., Schmidt J. R., Sundström V., Torii H., Woutersen S., Xu X. C., Zanni M. T., Zhang Y., Zigmantas D.   +35 more
core   +3 more sources