Comb-calibrated solar spectroscopy through a multiplexed single-mode fiber channel

Autor: R A Probst, L Wang, H-P Doerr, T Steinmetz, T J Kentischer, G Zhao, T W Hänsch, Th Udem, R Holzwarth, W Schmidt

Publikováno v: New Journal of Physics, Vol 17, Iss 2, p 023048 (2015)

We investigate a new scheme for astronomical spectrograph calibration using the laser frequency comb at the Solar Vacuum Tower Telescope on Tenerife. Our concept is based upon a single-mode fiber channel, that simultaneously feeds the spectrograph wi

Externí odkaz: https://doaj.org/article/c3bc1da1884d4ef7934f8c139bab0c95

Direct energy transfer from photosystem II to photosystem I confers winter sustainability in Scots Pine

Autor: Pushan Bag, Volha Chukhutsina, Zishan Zhang, Suman Paul, Alexander G. Ivanov, Tatyana Shutova, Roberta Croce, Alfred R. Holzwarth, Stefan Jansson

Publikováno v: Nature Communications, Vol 11, Iss 1, Pp 1-13 (2020)

Evergreen conifers rely on ‘sustained quenching’ to protect their photosynthetic machinery during long, cold winters. Here, Bag et al. show that direct energy transfer (spillover) from photosystem II to photosystem I triggered by loss of grana st

Externí odkaz: https://doaj.org/article/73011e9e341f46158cf52d05f983bab8

Thylakoid membrane reorganizations revealed by small-angle neutron scattering of Monstera deliciosa leaves associated with non-photochemical quenching

Autor: Renáta Ünnep, Suman Paul, Ottó Zsiros, László Kovács, Noémi K. Székely, Gábor Steinbach, Marie-Sousai Appavou, Lionel Porcar, Alfred R. Holzwarth, Győző Garab, Gergely Nagy

Publikováno v: Open Biology, Vol 10, Iss 9 (2020)

Non-photochemical quenching (NPQ) is an important photoprotective mechanism in plants and algae. Although the process is extensively studied, little is known about its relationship with ultrastructural changes of the thylakoid membranes. In order to

Externí odkaz: https://doaj.org/article/bd9b3516d0b54e9fb2ee41a99db2b199

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Manifestation of Hydrogen Bonding and Exciton Delocalization on the Absorption and Two-Dimensional Electronic Spectra of Chlorosomes

Autor: Vesna Erić, Xinmeng Li, Lolita Dsouza, Sean K. Frehan, Annemarie Huijser, Alfred R. Holzwarth, Francesco Buda, G. J. Agur Sevink, Huub J. M. de Groot, Thomas L. C. Jansen

Publikováno v: Journal of Physical Chemistry B, 127(5), 1097-1109. AMER CHEMICAL SOC
Journal of physical chemistry B, 127(5), 1097-1109. American Chemical Society
Journal of Physical Chemistry B, 127(5), 1097-1109

Chlorosomes are supramolecular aggregates that contain thousands of bacteriochlorophyll molecules. They perform the most efficient ultrafast excitation energy transfer of all natural light-harvesting complexes. Their broad absorption band optimizes l

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef6ad0bd6b5cda5ac21bc395253ea1c2
http://hdl.handle.net/10852/101460