Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Marek Osinski"'
Autor:
Nathan J. Withers, Marek Osinski, Dale L. Huber, Gema J. Alas, Landon A. Schmucker, DeYannah J. Walker, Sergei A. Ivanov, Adreanna G. Rael, Alexander Neumann, Arjun Senthil, Shruti I. Gharde, Gennady A. Smolyakov, Rafael A. Castro, John Watt, Mark V. Reymatias
Publikováno v:
2021 IEEE Research and Applications of Photonics in Defense Conference (RAPID).
We have developed a novel method of pump-probe luminescence thermometry based on the detection of photoluminescence signal phase change versus power of the pumping laser, and applied it to studies of optical cooling from colloidal quantum dots embedd
Autor:
Arjun Senthil, Nathan J. Withers, Marek Osinski, Adreanna G. Rael, John Watt, Sergei A. Ivanov, Shruti I. Gharde, Dale L. Huber, DeYannah J. Walker, Dominic Bosomtwi, Nhi Nguyen, Mark V. Reymatias, Gema J. Alas
Publikováno v:
Colloidal Nanoparticles for Biomedical Applications XV.
CdSexS1-x/ZnS quantum dots (QDs) can cover a broader spectral range than the commonly used CdSe/ZnS QDs and are potentially useful as biomarkers for tagging cell lines such as HeLa, A549, and MCF-7 due to their high photoluminescence intensity and st
Autor:
Dominic Bosomtwi, Adreanna G. Rael, Nathan J. Withers, Yuliya Kuznetsova, Gema J. Alas, Alexander Neumann, Hosuk Lee, DeYannah J. Walker, Gennady A. Smolyakov, Sergei A. Ivanov, Shruti I. Gharde, Troy A. Hutchins-Delgado, Sami A. Nazib, Marek Osinski, Dale L. Huber, Arjun Senthil, Mark V. Reymatias
Publikováno v:
Photonic Heat Engines: Science and Applications II.
Anti-Stokes photoluminescence from colloidal CdSeS/ZnS quantum dots (QDs) is observed. The QDs were inserted into the core of wider-bandgap SiO2/Si3N4/SiO2 structure by thin film deposition and confirmed as promising nanoemitters for laser cooling du
Autor:
Arjun Senthil, Marek Osinski, Sergei A. Ivanov, Nathan J. Withers, Gavin P. Gonzales, Gema J. Alas, Dale L. Huber
Publikováno v:
Colloidal Nanoparticles for Biomedical Applications XIV.
Colloidal quantum dots (QDs) emitting in the visible spectrum are of interest for many biomedical applications, including bioimaging, biosensing, drug delivery, and photodynamic therapy. However, a significant limitation is that QDs typically contain
Autor:
Milan Pophristic, D. I. Florescu, Jinhyun Lee, Shiping Guo, Dong-Seung Lee, Marek Osinski, Petr G. Eliseev
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 9:1239-1245
Nitride-based ultraviolet (UV) heterostructures with InGaN quantum wells and AlInGaN barrier layers have been grown by metal-organic chemical vapor deposition on sapphire substrates. The emission band was at 3.307 eV (375 nm) at room temperature (RT)
Publikováno v:
Journal of Electronic Materials. 29:332-341
A band-tail model of inhomogeneously broadened radiative recombination is presented and applied to interpret experimental data on photoluminescence of various bulk and quantum-well epitaxial InGaN/GaN structures grown by MOCVD. The temperature depend
Publikováno v:
Journal of Crystal Growth. :803-807
Results of our comprehensive studies of Nichia blue and green SQW LEDs are presented. These include measurements of the emission spectra over a wide range of currents, temperatures, and pressures. The observed anomalous blue shift with temperature an
Autor:
Piotr Perlin, Tadeusz Suski, N. E. Christensen, P. Wisniewski, Marek Osinski, Valentin Iota, Petr G. Eliseev, I. Gorczyca, B. A. Weinstein
Publikováno v:
Solid State Communications. 106:567-571
We propose a new approach to explain the unusually low pressure coefficients of the luminescence peaks observed in single-quantum-well InGaN-based light emitting diodes manufactured by Nichia Chemical Industries. In view of the most recent first prin
Autor:
Marek Osinski, Sergei A. Ivanov, Samantha M. Stephens, Gennady A. Smolyakov, Brian A. Akins, John B. Plumley, Nathaniel C. Cook
Publikováno v:
2013 Conference on Lasers and Electro-Optics Pacific Rim (CLEOPR).
We have synthesized ZnSe:Mn/ZnS doped core/shell quantum dots with high temperature stability and 91.0% quantum efficiency at the 597 nm emission with 412 nm excitation, very attractive as nanophosphors for white LEDs.
Autor:
Jacqueline M. Sugar, Nathan J. Withers, Antonio C. Rivera, Yekaterina I. Brandt, Nathaniel C. Cook, Natasha N. Glazener, Brian A. Akins, John B. Plumley, Gennady A. Smolyakov, Leisha M. Armijo, Rana Chan, Marek Osinski, P Heintz
Publikováno v:
Colloidal Nanocrystals for Biomedical Applications VIII.
Lanthanide fluoride colloidal nanocrystals offer a way to improve the diagnosis and treatment of cancer through the enhanced absorption of ionizing radiation, in addition to providing visible luminescence. In order to explore this possibility, tests