Results 71 to 80 of about 232,054 (254)

Nanoporous Scaffold‐Assisted Ligand‐Free CsPbBr3 Quantum Dots for Bright and Ultrapure Green Light‐Emitting Diodes

Advanced Optical Materials, EarlyView.
Networks of confined CsPbBr3 perovskite quantum dots, synthesised within nanoporous silica scaffolds using precursors containing different combinations of butylammonium bromide and crown ether additives, enable electroluminescent devices with 400‐fold enhanced charge injection and transport with respect to control devices, yielding ultrapure green ...
Carlos Romero‐Pérez, Zhongcheng Yuan, Mauricio E. Calvo, Henry J. Snaith, Hernán Míguez   +4 more
wiley   +1 more source

Two‐Dimensional Isotropic Spatial Differentiation Through Complete Polarization Control

Advanced Optical Materials, EarlyView.
This work enables two‐dimensional isotropic spatial differentiation at planar interfaces over a wide range of incident angles by extending the output polarization from linear to elliptical. The choice of incident angle can be used to balance broader spectral response at low angles and higher edge‐detection efficiency at larger angles.
Doyoon Lee, Minkyung Kim
wiley   +1 more source

Rotating Fluorescent Nanodiamond Assemblies With Focused Laguerre–Gaussian Beams

Advanced Optical Materials, EarlyView.
Self‐assembled fluorescent nanodiamond clusters are optically trapped and driven into controlled two‐dimensional rotation with Laguerre–Gaussian beams. With localized optical excitation, optically detected magnetic resonance spectra are collected at defined points along the orbit in a uniform external magnetic field.
Adam Stewart, Anthony J. El‐Helou, Ying Zhu, David McGloin, David A. Simpson, Peter J. Reece   +5 more
wiley   +1 more source

Deterministic Integration of Quantum Emitters and Optical Cavities in a Van Der Waals Crystal

Advanced Optical Materials, EarlyView.
The work demonstrates fabrication of Circular Bragg Grating (CBG) cavities with embedded emitters in hBN. The cavities are fabricated around a pre‐characterised quantum emitter. The integrated platform enables light matter interaction and access to brighter emitters and spins in hBN.
James Liddle‐Wesolowski, Otto Cranwell Schaeper, Nathan Coste, Benjamin Whitefield, Evan Williams, Helen Zhi Jie Zeng, Mehran Kianinia, Anastasiia Zalogina, Igor Aharonovich   +8 more
wiley   +1 more source

Bis‐Naphthyl Dipicolinic Dicarboxamide‐Based Self‐Assembled Aqueous Nano Dispersion as an Efficient Light Harvesting Medium and Cucurbit[7]Uril Host Complexation Effect Study

Advanced Optical Materials, EarlyView.
Bis‐naphthyl‐4‐hydroxy‐dipicolinic‐dicarboxamide, a small molecule, forms nanodispersion as an efficient light‐harvesting medium in aqueous solution. Further cucurbit[7]uril addition was found to inhibit the FRET co‐assembly by host‐guest complexation. ABSTRACT Development of artificial light harvesting systems in a minimalistic self‐assembly model is ...
Tumpa Gorai, Abinash Dalai, Thorfinnur Gunnlaugsson   +2 more
wiley   +1 more source

Engineering Exciton g‐Factors With Light in Type‐II Heterostructures

Advanced Optical Materials, EarlyView.
All‐optical approaches have emerged as cutting‐edge alternatives for ultrafast, energy‐efficient, and spatially localized tuning and switching of material properties. In our work, we demonstrate how light intensity alone can be leveraged to engineer g‐factors from a single‐type of carrier in type‐II heterostructures through Coulomb‐induced wavefunction
G. M. Jacobsen, V. A. Oliveira, B. L. Liang, A. Pelais, M. E. Ware, G. J. Salamo, G. E. Marques, Yu. I. Mazur, V. Lopez‐Richard, M. D. Teodoro   +9 more
wiley   +1 more source

Synthesis of Robust Control for a Class of Nonlinear Systems With Parametric Uncertainties Through Modified Input-Output Linearization via Feedback With Linear-Nonlinear Decomposition

Journal of Control Science and Engineering
The article describes an alteration of the traditional method of input-output feedback linearization by applying a linear-nonlinear decomposition of a system. The modified method makes it possible to obtain an equivalent linear model of the system in the
G. I. Mihalev, H. S. Stoycheva, S. Y. Yordanov, K. H. Ormandzhiev, S. I. Ivanov, K. K. Angelov, S. M. Sadinov   +6 more
doaj   +1 more source

SRM: A Source-Reprojection Module for Cross-Day sEMG Gesture Recognition

Sensors
Surface electromyography (sEMG) gesture recognition degrades across recording days under domain shift, increasing calibration burden for myoelectric interfaces. Many cross-day adaptation pipelines retrain the deployed recognizer or require labeled target-
Dian Li, Peiji Chen, Shunta Togo, Hiroshi Yokoi, Yinlai Jiang   +4 more
doaj   +1 more source

Phonon Polariton Confinement in Isotopically Pure MOVPE‐Grown BN Triangles

Advanced Optical Materials, EarlyView.
Phonon polaritons are confined in MOVPE‐grown isotopically pure 10BN$^{10}{\rm BN}$ triangles. The resonator modes are excited and mapped by near‐field spectroscopy. Through scanning a wide infrared frequency range and modeling, the polariton dispersion relation is retrieved.
Maximilian Scharpey, Oskar Schröer, Daniel Wigger, Lena Miler, Jakub Iwański, Andrzej Wysmołek, Johannes Binder, Iris Niehues   +7 more
wiley   +1 more source

Performance Optimization for Mobile Wireless Sensor Networks Routing Protocol Using Adaptive Boosting With Sensitivity Analysis

IEEE Access
Mobile Wireless Sensor Networks (MWSNs) are employed in diverse applications, including remote patient monitoring systems (RPMS). In RPMS, biomedical sensors collect physiological data from patients outside clinical settings, and the data is transmitted ...
Kegomoditswe Boikanyo, Adamu Murtala Zungeru, Abid Yahya, Caspar K. Lebekwe   +3 more
doaj   +1 more source