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Showing 1 to 12 of 82 entries
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Detection of non-classical space-time correlations with a novel type of single-photon camera.

Optics express

Just F, Filipenko M, Cavanna A, Michel T, Gleixner T, Taheri M, Vallerga J, Campbell M, Tick T, Anton G, Chekhova MV, Leuchs G.
PMID: 25090571
Opt Express. 2014 Jul 14;22(14):17561-72. doi: 10.1364/OE.22.017561.

During the last decades, multi-pixel detectors have been developed capable of registering single photons. The newly developed hybrid photon detector camera has a remarkable property that it has not only spatial but also temporal resolution. In this work, we...

Fluorescence lifetime microscopy with a time- and space-resolved single-photon counting detector.

Proceedings of SPIE--the International Society for Optical Engineering

Michalet X, Siegmund OHW, Vallerga JV, Jelinsky P, Pinaud FF, Millaud JE, Weiss S.
PMID: 29449756
Proc SPIE Int Soc Opt Eng. 2006;6372. doi: 10.1117/12.686429. Epub 2006 Oct 25.

We have recently developed a wide-field photon-counting detector (the H33D detector) having high-temporal and high-spatial resolutions and capable of recording up to 500,000 photons per sec. Its temporal performance has been previously characterized using solutions of fluorescent materials with...

Synthesis and insertion reactions of the cyclometalated palladium-alkyl complexes Pd(CH(2)CMe(2)-o-C(6)H(4))L(2). Observation of a pentacoordinated intermediate in the insertion of SO(2).

Inorganic chemistry

Cámpora J, López JA, Palma P, del Rio D, Carmona E, Valerga P, Graiff C, Tiripicchio A.
PMID: 11487313
Inorg Chem. 2001 Aug 13;40(17):4116-26. doi: 10.1021/ic010114r.

Palladacycles of the type 2, have been synthesized by treatment of the corresponding chloroalkylcomplexes Pd(CH(2)CMe(2)C(6)H(5))ClL(2) (L(2) = (PMe(3))(2), 2a, or 1,5-cyclooctadiene (cod), 2b) with suitable bases, or by simple ligand exchange reactions from the cyclooctadiene derivative 2b. The metallacycles...

[Surgery of pain: the electric finger].

Concours medical

DIECKMANN G, VALLETTA J.
PMID: 13585809
Concours Med. 1958 Oct 04;80(40):4183-4 passim.

No abstract available.

Formation of a coordinated 2-aminoethylidene ligand and its rearrangement by deprotonation into a phosphinoallyl ligand containing a pyrrolidin-2-yl ring.

Inorganic chemistry

Puerta MC, Valerga P, Palacios MD.
PMID: 18729354
Inorg Chem. 2008 Oct 06;47(19):8598-600. doi: 10.1021/ic801302z. Epub 2008 Aug 26.

The activation of 1,1-diphenyl-2-propyn-1-ol by the metallic fragment [(eta (5)-C 5Me 5)Ru(dippae)] (+) {dippae = 1,2-bis[(diisopropylphosphanyl)amino]ethane}, followed by dehydration, produces a cationic complex that, by deprotonation and rearrangement, leads to a neutral complex with a phosphinoallyl ligand containing a...

Detectors for single-molecule fluorescence imaging and spectroscopy.

Journal of modern optics

Michalet X, Siegmund OH, Vallerga JV, Jelinsky P, Millaud JE, Weiss S.
PMID: 20157633
J Mod Opt. 2007 Jan 01;54(2):239. doi: 10.1080/09500340600769067.

Single-molecule observation, characterization and manipulation techniques have recently come to the forefront of several research domains spanning chemistry, biology and physics. Due to the exquisite sensitivity, specificity, and unmasking of ensemble averaging, single-molecule fluorescence imaging and spectroscopy have become,...

Photon-Counting H33D Detector for Biological Fluorescence Imaging.

Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment

Michalet X, Siegmund OH, Vallerga JV, Jelinsky P, Millaud JE, Weiss S.
PMID: 20151021
Nucl Instrum Methods Phys Res A. 2006 Nov 01;567(1):133. doi: 10.1016/j.nima.2006.05.155.

We have developed a photon-counting High-temporal and High-spatial resolution, High-throughput 3-Dimensional detector (H33D) for biological imaging of fluorescent samples. The design is based on a 25 mm diameter S20 photocathode followed by a 3-microchannel plate stack, and a cross...

Comet 81P/Wild 2 under a microscope.

Science (New York, N.Y.)

Brownlee D, Tsou P, Aléon J, Alexander CM, Araki T, Bajt S, Baratta GA, Bastien R, Bland P, Bleuet P, Borg J, Bradley JP, Brearley A, Brenker F, Brennan S, Bridges JC, Browning ND, Brucato JR, Bullock E, Burchell MJ, Busemann H, Butterworth A, Chaussidon M, Cheuvront A, Chi M, Cintala MJ, Clark BC, Clemett SJ, Cody G, Colangeli L, Cooper G, Cordier P, Daghlian C, Dai Z, D'Hendecourt L, Djouadi Z, Dominguez G, Duxbury T, Dworkin JP, Ebel DS, Economou TE, Fakra S, Fairey SA, Fallon S, Ferrini G, Ferroir T, Fleckenstein H, Floss C, Flynn G, Franchi IA, Fries M, Gainsforth Z, Gallien JP, Genge M, Gilles MK, Gillet P, Gilmour J, Glavin DP, Gounelle M, Grady MM, Graham GA, Grant PG, Green SF, Grossemy F, Grossman L, Grossman JN, Guan Y, Hagiya K, Harvey R, Heck P, Herzog GF, Hoppe P, Hörz F, Huth J, Hutcheon ID, Ignatyev K, Ishii H, Ito M, Jacob D, Jacobsen C, Jacobsen S, Jones S, Joswiak D, Jurewicz A, Kearsley AT, Keller LP, Khodja H, Kilcoyne AL, Kissel J, Krot A, Langenhorst F, Lanzirotti A, Le L, Leshin LA, Leitner J, Lemelle L, Leroux H, Liu MC, Luening K, Lyon I, Macpherson G, Marcus MA, Marhas K, Marty B, Matrajt G, McKeegan K, Meibom A, Mennella V, Messenger K, Messenger S, Mikouchi T, Mostefaoui S, Nakamura T, Nakano T, Newville M, Nittler LR, Ohnishi I, Ohsumi K, Okudaira K, Papanastassiou DA, Palma R, Palumbo ME, Pepin RO, Perkins D, Perronnet M, Pianetta P, Rao W, Rietmeijer FJ, Robert F, Rost D, Rotundi A, Ryan R, Sandford SA, Schwandt CS, See TH, Schlutter D, Sheffield-Parker J, Simionovici A, Simon S, Sitnitsky I, Snead CJ, Spencer MK, Stadermann FJ, Steele A, Stephan T, Stroud R, Susini J, Sutton SR, Suzuki Y, Taheri M, Taylor S, Teslich N, Tomeoka K, Tomioka N, Toppani A, Trigo-Rodríguez JM, Troadec D, Tsuchiyama A, Tuzzolino AJ, Tyliszczak T, Uesugi K, Velbel M, Vellenga J, Vicenzi E, Vincze L, Warren J, Weber I, Weisberg M, Westphal AJ, Wirick S, Wooden D, Wopenka B, Wozniakiewicz P, Wright I, Yabuta H, Yano H, Young ED, Zare RN, Zega T, Ziegler K, Zimmerman L, Zinner E, Zolensky M.
PMID: 17170289
Science. 2006 Dec 15;314(5806):1711-6. doi: 10.1126/science.1135840.

The Stardust spacecraft collected thousands of particles from comet 81P/Wild 2 and returned them to Earth for laboratory study. The preliminary examination of these samples shows that the nonvolatile portion of the comet is an unequilibrated assortment of materials...

Oligomerization of styrenes mediated by cationic allyl nickel complexes containing triphenylstibine or triphenylarsine.

Dalton transactions (Cambridge, England : 2003)

Jiménez-Tenorio M, Carmen Puerta M, Salcedo I, Valerga P, de Los Ríos I, Mereiter K.
PMID: 19240920
Dalton Trans. 2009 Mar 14;(10):1842-52. doi: 10.1039/b818784c. Epub 2009 Jan 27.

The cationic complexes [Ni(eta(3)-CH(2)C(R)CH(2))(SbPh(3))(3)][BAr'(4)] (R = CH(3), H ; Ar' = 3,5-C(6)H(3)(CF(3))(2)), [Ni(eta(3)-CH(2)C(R)CH(2))(AsPh(3))(2)][BAr'(4)] (R = CH(3), H ), [Ni(eta(3)-CH(2)CHCH(2))(PPh(3))(L)][BAr'(4)] (L = SbPh(3), AsPh(3)), and the neutral derivatives [Ni(eta(3)-CH(2)C(R)CH(2))Br(L)] (L = SbPh(3), R = CH(3), H ; L = AsPh(3),...

Centroiding algorithms for high speed crossed strip readout of microchannel plate detectors.

Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment

Vallerga J, Tremsin A, Raffanti R, Siegmund O.
PMID: 21918588
Nucl Instrum Methods Phys Res A. 2011 May;633:S255-S258. doi: 10.1016/j.nima.2010.06.181.

Imaging microchannel plate (MCP) detectors with cross strip (XS) readout anodes require centroiding algorithms to determine the location of the amplified charge cloud from the incident radiation, be it photon or particle. We have developed a massively parallel XS...

New photon-counting detectors for single-molecule fluorescence spectroscopy and imaging.

Proceedings of SPIE--the International Society for Optical Engineering

Michalet X, Colyer RA, Scalia G, Weiss S, Siegmund OH, Tremsin AS, Vallerga JV, Villa F, Guerrieri F, Rech I, Gulinatti A, Tisa S, Zappa F, Ghioni M, Cova S.
PMID: 24729836
Proc SPIE Int Soc Opt Eng. 2011 May 13;8033:803316. doi: 10.1117/12.883708.

Solution-based single-molecule fluorescence spectroscopy is a powerful new experimental approach with applications in all fields of natural sciences. Two typical geometries can be used for these experiments: point-like and widefield excitation and detection. In point-like geometries, the basic concept...

Structural basis for light control of cell development revealed by crystal structures of a myxobacterial phytochrome.

IUCrJ

Woitowich NC, Halavaty AS, Waltz P, Kupitz C, Valera J, Tracy G, Gallagher KD, Claesson E, Nakane T, Pandey S, Nelson G, Tanaka R, Nango E, Mizohata E, Owada S, Tono K, Joti Y, Nugent AC, Patel H, Mapara A, Hopkins J, Duong P, Bizhga D, Kovaleva SE, St Peter R, Hernandez CN, Ozarowski WB, Roy-Chowdhuri S, Yang JH, Edlund P, Takala H, Ihalainen J, Brayshaw J, Norwood T, Poudyal I, Fromme P, Spence JCH, Moffat K, Westenhoff S, Schmidt M, Stojković EA.
PMID: 30224965
IUCrJ. 2018 Aug 29;5:619-634. doi: 10.1107/S2052252518010631. eCollection 2018 Sep 01.

Phytochromes are red-light photoreceptors that were first characterized in plants, with homologs in photosynthetic and non-photosynthetic bacteria known as bacteriophytochromes (BphPs). Upon absorption of light, BphPs interconvert between two states denoted Pr and Pfr with distinct absorption spectra in...

Showing 1 to 12 of 82 entries