Results 121 to 130 of about 219,893 (351)

Optical absorption and photoluminescence spectroscopy of the growth of silver nanoparticles

, 2005
Results obtained from the optical absorption and photoluminescence (PL) spectroscopy experiments have shown the formation of excitons in the silver-exchanged glass samples. These findings are reported here for the first time.
A. L. Stepanov, B. K. Panigrahi, D. Briggs, F. Gonella, G. Schon, K. G. M. Nair, K. Luo, M. A. Villegas, P. Gangopadhyay, P. Magudapathy, P. W. Wang, R. Kesavamoorthy, S. V. Narasimhan, Santanu Bera   +13 more
core   +1 more source

Structural changes in chemically deposited CdS: effect of thermal annealing

Moldavian Journal of the Physical Sciences, 2010
The dynamics of changes in the structural and optical properties of chemical bath- deposited (CBD) CdS/glass thin films in H2 annealing process in a pre-heated furnace between 200–450°C was studied systematically. Annealing imparts structural stability
Maticiuc, Natalia, Potlog, Tamara, Hiie, J., Mikli, V., Poldme, Nils, Raadik, T., Valdna, V., Mere, Arvo, Gavrilov, A., Quinci, F., Lughi, V., Sergo, V.   +11 more
doaj  

Ultrahigh-Temperature Regeneration of Long Period Gratings (LPGs) in Boron-Codoped Germanosilicate Optical Fibre

Sensors, 2015
The regeneration of UV-written long period gratings (LPG) in boron-codoped germanosilicate “W” fibre is demonstrated and studied. They survive temperatures over 1000 °C.
Wen Liu, Kevin Cook, John Canning
doaj   +1 more source

Narrowband Detection via Charge Collection Narrowing Organic Photodetector Enabled by Low Bandgap Random Terpolymer for Biometric Sensing

Advanced Functional Materials, EarlyView.
A novel low‐bandgap random terpolymer is designed for narrow band detection in charge collection narrowing (CCN) based organic photodetectors. With a relative thin active layer (<1 µm), the CCN‐based devices achieved a narrowband response of 68 nm full‐width‐at‐half‐maximum at 916 nm, together with Responsivity values of 0.13 A W−1 and dark current of ...
Matilde Brunetta, Zhuoran Qiao, Adibah Zamhuri, Francesco Furlan, Martina Rimmele, Peter A. Gilhooly‐Finn, Lewis M. Cowen, Filip Aniés, Patipan Sukpoonprom, Stanley Cazaly, Julianna Panidi, Flurin Eisner, Martin Heeney, Bob C. Schroeder, Nicola Gasparini   +14 more
wiley   +1 more source

Search of the ground state(s) of spin glasses and quantum annealing [PDF]

Special issue of Science & Culture, 2019, 2019
We review our earlier studies on the order parameter distribution of the quantum Sherrington-Kirkpatrick (SK) model. Through Monte Carlo technique, we investigate the behavior of the order parameter distribution at finite temperatures. The zero temperature study of the spin glass order parameter distribution is made by the exact diagonalization method.
arxiv  

Stratum Corneum‐Inspired Zwitterionic Hydrogels with Intrinsic Water Retention and Anti‐Freezing Properties for Intelligent Flexible Sensors

Advanced Functional Materials, EarlyView.
A novel stratum corneum‐inspired zwitterionic hydrogel is developed for intelligent, flexible sensors, featuring intrinsic water retention and anti‐freezing properties. The quasi‐gel, composed of hygroscopic polymers and bound water, maintains its softness across a wide range of humidity.
Meng Wu, Chenyu Qiao, Peng‐Fei Sui, Jing‐Li Luo, Zuoli Li, Yi Cao, Renjun Pei, Xuwen Peng, Hongbo Zeng   +8 more
wiley   +1 more source

Distinctive Doping Behavior of Conjugated Polymers With Pendant‐Side Conjugation for Enhanced Thermoelectric Properties

Advanced Functional Materials, EarlyView.
Novel conjugated polymers with side‐chain π‐conjugation are developed to enhance organic thermoelectric properties. Remarkably, the pendant doping in the conjugated polymers preserved strong intermolecular ordering in the film states even at high FeCl3 dopant concentrations (16 – 32 mM), achieving a promising power factor > 10 µW m−1 K−2 across a wide ...
Hyeokjun Kim, Sang Beom Kim, Seungok Pyo, Jaeyoung Jang, In Hwan Jung   +4 more
wiley   +1 more source

Effect of physical aging on the low-frequency vibrational density of states of a glassy polymer

, 2003
The effects of the physical aging on the vibrational density of states (VDOS) of a polymeric glass is studied. The VDOS of a poly(methyl methacrylate) glass at low-energy (
Ahmad N., Angell C. A., Bandrup J., Duval E., E Duval, Etienne S., J. F Jal, Jäckle J., Kanaya T., L David, L Saviot, Mermet A., S Etienne, Struik L. C. E., Suck J. B., Surovtsev N. V., Wittmer J. P.   +16 more
core   +2 more sources

Evolution of Magnetic Glass on Partial Crystallization of a Bulk Metallic Glass: Tb36Sm20Al24Co20 [PDF]

arXiv, 2012
A comparative study on as cast and annealed rare earth bulk metallic glass (BMG) with composition Tb36Sm20Al24Co20 has been carried out by magnetization measurements. The as cast amorphous sample shows non-ergodic magnetization but does not show the behavior expected from magnetic glass.
arxiv  

Near‐Infrared Circularly Polarized Electroluminescence with Switchable Handedness in Organic LEDs

Advanced Functional Materials, EarlyView.
The first fully‐organic circularly polarized near‐infrared OLED, using a co‐assembled active layer of ITIC and a chiral inducer, exhibits dissymmetry values up to 0.074 and 1.65 Wsr−1m−2 radiance. The circular polarization sign can be switched by manipulating the position of the recombination zone, resulting in enhanced device performance and stability.
Francesco Zinna, Chiara Botta, Silvia Luzzati, Lorenzo Di Bari, Umberto Giovanella   +4 more
wiley   +1 more source