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Showing 1 to 12 of 63 entries
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Classical to quantum transfer of optical vortices.

Optics express

Vicuña-Hernández V, Cruz-Ramírez H, Ramírez-Alarcón R, U'Ren AB.
PMID: 25321213
Opt Express. 2014 Aug 25;22(17):20027-37. doi: 10.1364/OE.22.020027.

We show that an optical vortex beam, implemented classically, can be transferred to the transverse amplitude of a heralded single photon. For this purpose we have relied on the process of spontaneous parametric downconversion (SPDC) for the generation of...

Fabrication of ultra-thin polyrotaxane-based films via solid-state continuous assembly of polymers.

Chemical communications (Cambridge, England)

Tan S, Nam E, Cui J, Xu C, Fu Q, Ren JM, Wong EH, Ladewig K, Caruso F, Blencowe A, Qiao GG.
PMID: 25487812
Chem Commun (Camb). 2015 Feb 07;51(11):2025-8. doi: 10.1039/c4cc08759c.

Surface-confined ultra-thin polyrotaxane (PRX)-based films with tunable composition, surface topology and swelling characteristics were prepared by solid-state continuous assembly of polymers (ssCAP). The PRX-based films supported cell attachment, and their degradation in biological media could be tuned. This study...

Observation of ultrabroadband, beamlike parametric downconversion.

Optics letters

O'Donnell KA, U'Ren AB.
PMID: 17339947
Opt Lett. 2007 Apr 01;32(7):817-9. doi: 10.1364/ol.32.000817.

We report spontaneous parametric downconversion having an unusually wide spectral bandwidth. A collinear type 1 phase-matching configuration is employed with degeneracy near the zero group-velocity dispersion frequency. With a spectral width of 1080 nm and degenerate wavelength of 1885...

The future of emergency medicine: an evolutionary perspective.

Academic medicine : journal of the Association of American Medical Colleges

Sklar DP, Handel DA, Hoekstra J, Baren JM, Zink B, Hedges JR.
PMID: 20182124
Acad Med. 2010 Mar;85(3):490-5. doi: 10.1097/ACM.0b013e3181ccb628.

Emergency medicine (EM) has grown rapidly over the past 50 years, evolving from a specialty defined by its locational identity--a hospital receiving room--to the specialty picked fourth-most-frequently by graduating U.S. medical students and to being the focal point of...

Experimental proposal for the generation of entangled photon triplets by third-order spontaneous parametric downconversion in optical fibers.

Optics letters

Corona M, Garay-Palmett K, U'Ren AB.
PMID: 21263496
Opt Lett. 2011 Jan 15;36(2):190-2. doi: 10.1364/OL.36.000190.

We present an experimental proposal for the generation of photon triplets based on third-order spontaneous parametric downconversion in thin optical fibers. Our analysis includes expressions for the quantum state, which describes the photon triplets and for the generation rate...

Dissipative tunneling in two-state systems at the Si/SiO2 interface.

Physical review letters

Cobden DH, Pepper M, Uren MJ.
PMID: 10055189
Phys Rev Lett. 1993 Dec 20;71(25):4230-4233. doi: 10.1103/PhysRevLett.71.4230.

No abstract available.

Temperature-Controlled Entangled-Photon Absorption Spectroscopy.

Physical review letters

León-Montiel RJ, Svozilík J, Torres JP, U'Ren AB.
PMID: 31386532
Phys Rev Lett. 2019 Jul 12;123(2):023601. doi: 10.1103/PhysRevLett.123.023601.

Entangled two-photon absorption spectroscopy (TPA) has been widely recognized as a powerful tool for revealing relevant information about the structure of complex molecular systems. However, to date, the experimental implementation of this technique has remained elusive, mainly because of...

Molecular mapping of poly(methyl methacrylate) super-helix stereocomplexes.

Chemical science

Christofferson AJ, Yiapanis G, Ren JM, Qiao GG, Satoh K, Kamigaito M, Yarovsky I.
PMID: 29560224
Chem Sci. 2015 Feb 01;6(2):1370-1378. doi: 10.1039/c4sc02971b. Epub 2014 Dec 01.

In this study, by using X-ray powder diffraction profiles as blueprints, we successfully mapped the most probable molecular-level structural arrangement of the PMMA super-helix stereocomplexes through molecular dynamic simulations. Molecular-level resolution of the PMMA triple-helix supramolecule was not previously...

Control of Amphiphile Self-Assembly via Bioinspired Metal Ion Coordination.

Journal of the American Chemical Society

Knight AS, Larsson J, Ren JM, Bou Zerdan R, Seguin S, Vrahas R, Liu J, Ren G, Hawker CJ.
PMID: 29338205
J Am Chem Soc. 2018 Jan 31;140(4):1409-1414. doi: 10.1021/jacs.7b11005. Epub 2018 Jan 17.

Inspired by marine siderophores that exhibit a morphological shift upon metal coordination, hybrid peptide-polymer conjugates that assemble into different morphologies based on the nature of the metal ion coordination have been designed. Coupling of a peptide chelator, hexahistidine, with...

Strobiloscyphones A-F, 6-Isopentylsphaeropsidones and Other Metabolites from .

Journal of natural products

Qu W, Kithsiri Wijeratne EM, Bashyal BP, Xu J, Xu YM, Liu MX, Inácio MC, Arnold AE, U'Ren JM, Leslie Gunatilaka AA.
PMID: 34495663
J Nat Prod. 2021 Sep 24;84(9):2575-2586. doi: 10.1021/acs.jnatprod.1c00662. Epub 2021 Sep 08.

Six new 6-isopentylsphaeropsidones, strobiloscyphones A-F (

Shed Light in the DaRk LineagES of the Fungal Tree of Life-STRES.

Life (Basel, Switzerland)

Selbmann L, Benkő Z, Coleine C, de Hoog S, Donati C, Druzhinina I, Emri T, Ettinger CL, Gladfelter AS, Gorbushina AA, Grigoriev IV, Grube M, Gunde-Cimerman N, Karányi ZÁ, Kocsis B, Kubressoian T, Miklós I, Miskei M, Muggia L, Northen T, Novak-Babič M, Pennacchio C, Pfliegler WP, Pòcsi I, Prigione V, Riquelme M, Segata N, Schumacher J, Shelest E, Sterflinger K, Tesei D, U'Ren JM, Varese GC, Vázquez-Campos X, Vicente VA, Souza EM, Zalar P, Walker AK, Stajich JE.
PMID: 33352712
Life (Basel). 2020 Dec 19;10(12). doi: 10.3390/life10120362.

The polyphyletic group of black fungi within the Ascomycota (Arthoniomycetes, Dothideomycetes, and Eurotiomycetes) is ubiquitous in natural and anthropogenic habitats. Partly because of their dark, melanin-based pigmentation, black fungi are resistant to stresses including UV- and ionizing-radiation, heat and...

The adverse association between stimulant use for attention deficit hyperactivity disorder (ADHD) and semen parameters.

Andrologia

Pham MN, Hudnall MT, Fantus RJ, Lai JD, Ambulkar SS, Wren JM, Bennett NE, Auffenberg GB, Chu DI, Brannigan RE, Halpern JA.
PMID: 34816465
Andrologia. 2021 Nov 23;e14315. doi: 10.1111/and.14315. Epub 2021 Nov 23.

This study examined the relationship between stimulant medications used for the treatment of attention deficit hyperactivity disorder and semen parameters. We performed a retrospective cohort study at a large, academic institution between 2002 and 2020. We included men with...

Showing 1 to 12 of 63 entries