Results 131 to 140 of about 132,674 (264)

All-UV written integrated glass devices including planar Bragg gratings and lasers

, 2004
Direct UV writing provides an attractive route towards low-cost integrated optical components in photosensitive glasses. The technique may be applied to a wide range of different geometries including silica-on-silicon wafers, compound oxide glasses ...
Smith, P.G.R., Gawith, C.B.E., Sparrow, I.J.G., Watts, S.P., Guilhot, D.A., Adikan, M.F.R., Williams, R.B., Emmerson, G.D.   +7 more
core   +1 more source

Iron and Nickel Substituted Perovskite Cobaltites for Sustainable Oxygen Evolving Anodes in Alkaline Environment

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
Perovskite oxide catalysts with reduced Co content, substituted by Fe and Ni, are synthesized and studied for their activity in the oxygen evolution reaction in alkaline media. An increase in the intrinsic catalytic activity (obtained by the (RctCdl)−1 product) of the base material (Ba0.5Gd0.8La0.7Co2O6‐δ) is seen for an as high as 70 % substitution of
Henrik Petlund, Alaa Faid, Junjie Zhu, Anuj Pokle, Truls Norby, Svein Sunde, Athanasios Chatzitakis   +6 more
wiley   +1 more source

Fluorene‐based blue emitters: On the path to electrically pumped organic lasers

FlexMat, EarlyView.
Electrically pumped efficient operation remains unrealized, a major challenge in optoelectronics. Fluorene‐based blue‐emitting semiconductors are promising gain media, thanks to their structural tunability and favorable emission properties. This review summarizes recent advances, highlights their reliability and versatility in lasing, and outlines key ...
Yong Yan, Hao Li, Mengna Yu, Huiyin Wang, Jiangqiang He, Menghan Wu, Quanyou Feng, Linghai Xie   +7 more
wiley   +1 more source

Liquid crystal based tunable WDM planar Bragg grating devices based on precision sawn groove substrates

, 2009
Current optical telecommunication systems employ dense Wavelength Division Multiplexing (WDM) techniques to increase the data carrying capacity of fiber networks.
Adikan, F.R.M., Gates, J.C., P. G. R. Smith, Smith, P. G. R., F. R. M. Adikan, B. D. Snow, H. E. Major, D. O. Kundys, J. C. Gates, Snow, B. D., Dyadyusha, A., C. B. E. Gawith, Kundys, D.O., A. Dyadyusha, Gates, J. C., Kaczmarek, M., Gawith, C.B.E., M. Kaczmarek, Major, H.E., Kundys, D. O., Smith, P.G.R., Adikan, F. R. M., Snow, B.D., Major, H. E., Gawith, C. B. E.   +24 more
core   +1 more source

Conformal fiber bioelectronics: Bridging flexible electronics and precision medicine

FlexMat, EarlyView.
Conformal fiber bioelectronics for sensing, biomedical applications, and clinical devices toward precision medicine. Abstract Fiber‐based bioelectronic devices have emerged as a compelling platform for wearable and implantable health technologies, owing to their one‐dimensional topology, mechanical compliance, textile integrability, and compatibility ...
Yue Zhao, Yuhang Dong, Kehang Li, Lei Xie, Yingying Wei, Ziyi Xu, Xiao Zhao, Gang Song, Hong Liu, Enzhi Jia, Vyacheslav Ryabov, Maria Kercheva, Irina Kologrivova, Ying Jiang, Ting Li, Ting Wang   +15 more
wiley   +1 more source

Flexible direct write inscription of tilted fibre Bragg gratings using a femtosecond laser

, 2018
A flexible, plane-by-plane, direct-write, femtosecond-laser inscription method for tailored, tilted fibre Bragg gratings (TFBGs) is presented. We characterize 10th order gratings in the C-to-O bands and their refractometric sensitivity with grating ...
Caucheteur, Christophe, Ioannou, Andreas, Theodosiou, Antreas, Kalli, Kyriacos   +3 more
core   +1 more source

Controllable growth of two‐dimensional molecular crystals for high‐performance hybrid heterostructure imaging device

InfoMat, EarlyView.
Layer‐controlled two‐dimensional perylene‐derivative molecular crystals grow by van der Waals vapor‐phase epitaxy and show near‐unity photoluminescence quantum yields. In hybrid structures with TMDCs, the carrier relaxation can be tuned from charge transfer to Förster resonance energy transfer.
Huijuan Zhao, Zijie Lai, Xiaoyu Xie, Bihua Xie, Hao Hong, Zemin Tang, Xiangbin Shen, Yi Shi, Kaihui Liu, Daowei He, Wei Huang, Xinran Wang, Li Gao   +12 more
wiley   +1 more source

Direct-write depressed cladding waveguide Bragg-gratings in ZBLAN glass

, 2012
Strong waveguide Bragg-gratings (10 dB reflectivity) were fabricated by the direct-write technique in ZBLAN glass. Based on a depressed cladding, an array of 169 periodic and in phase modifications was placed inside the ...
T. M. Monro, H. Ebendorff-Heidepriem, Lancaster, D.G., Ebendorff Heidepriem, H., S. Gross, Fuerbach, A., D. G. Lancaster, A. Fuerbach, Gross, S., Monro, T.M., Withford, M.J., M. J. Withford   +11 more
core   +1 more source

Plant Availability of Phosphorus From Sewage Sludge Ash‐Based Fertilizers and Its Relationship to Phosphorus Extractability

Journal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Background Sewage sludge ash (SSA) is a potential phosphorus (P) source for fertilizers, but untreated SSA (USSA) often shows low plant availability of P. To increase P availability, sodium additives can be applied before sewage sludge incineration or during thermochemical SSA posttreatment, as this leads to the formation of CaNaPO4.
Kai Leers, Ute Arnold, Hannes Herzel, Christian Adam, Jürgen Burkhardt   +4 more
wiley   +1 more source

1 W Single‐Mode Large‐Area Edge‐Emitting Laser via Non‐Hermitian Spatial Mode Filtering

Laser &Photonics Reviews, EarlyView.
We demonstrate a non‐Hermitian spatial mode filtering approach for achieving high‐power single‐mode operation in large‐area edge‐emitting laser diodes. By symmetrically coupling passive filter arrays to the main lasing waveguide, higher‐order transverse modes are effectively suppressed while preserving the fundamental mode.
Ece Karabey, Babak Olyaeefar, Mohammadmahdi Alizadeh, Ramy El‐Ganainy, Abdullah Demir   +4 more
wiley   +1 more source