Results 91 to 100 of about 370,378 (203)

Revisiting Dopant Deactivation In Silicon Nanostructures

Advanced Physics Research, EarlyView.
Dopant activation is essential for the operation of semiconductor devices. On the nanoscale, however, quantum confinement and dielectric mismatch impede dopant activation. Here, we study the ionization of phosphorous in ultrathin silicon films embedded in different dielectric environments.
J. Knoch, D. König, M. Frentzen, Y.‐C. Chang, D. Hiller   +4 more
wiley   +1 more source

Compositionally Engineered Carboxymethyl Cellulose‐Based Optical Fibers With Exceptionally Low Optical Loss and Quantitative Humidity Sensing

Advanced Physics Research, EarlyView.
Carboxymethyl cellulose‐based biopolymer optical fibers are fabricated using aqueous wet spinning. The fibers exhibit record‐low optical attenuation in polysaccharide‐based waveguides while maintaining efficient transmission across the visible‐to‐near‐infrared region of the electromagnetic spectrum.
Jani Patrakka, Alizee Sanouillet, Ville Hynninen, Nonappa   +3 more
wiley   +1 more source

Triptycene‐Based Tripodal Molecular Platforms: A Comparative Study of Photoswitchable Langmuir–Blodgett Films on Metallic and Nonmetallic Surfaces

Chemistry – A European Journal, EarlyView.
A modular triptycene‐based platform enables the preparation of Langmuir–Blodgett monolayers of structurally diverse molecular photoswitches on quartz and gold. Surface‐sensitive characterization and optical spectroscopy demonstrate that the intrinsic switching behavior is retained after surface immobilization. ABSTRACT Photoswitchable molecular systems
Eva Kaletová, Katarina Majerová Varga, Carina Santos Hurtado, Guillaume Bastien, Milan Mašát, Zdeněk Bastl, Jiří Kaleta   +6 more
wiley   +1 more source

Transition Metal Compounds as Thermochromic Materials: Classification, Properties, Limitations, and Applications

EcoEnergy, EarlyView.
This review systematically examines how different transition metal compounds—such as binary and multinary metal oxides, halides, sulfides, and salts—exhibit thermochromism based on the d‐electron configurations of their transition metal cations. It focuses on three main mechanisms of thermochromism: phase transition, charge transfer, and bandgap change.
Jie Wang, Shan Wang, Long Yuan, Ling Zuo, Hui Qi, Changmin Hou   +5 more
wiley   +1 more source

Atomic layer deposition for hafnium oxide-based meta-optics in the ultraviolet spectral range

Journal of the European Optical Society-Rapid Publications
Hafnium oxide (HfO2) is a high-index dielectric material of growing importance for optical coatings and meta-optical components operating from the ultraviolet (UV) to the visible spectral range.
Siefke Thomas, Gerold Kristin, Shestaeva Svetlana, Paul Pallabi, Alam Shawon, Franta Daniel, Szeghalmi Adriana, Schröder Sven, Kroker Stefanie   +8 more
doaj   +1 more source

The Serendipitous Discovery of Rollover Cyclometalation: From Unrecognized Observation to Transformative Chemistry

European Journal of Inorganic Chemistry, EarlyView.
Rollover cyclometalation is a distinctive variant of classical cyclometalation where a chelated heterocyclic ligand undergoes internal rotation, releasing one donor atom from coordination and subsequently activating a remote C─H bond with high regioselectivity.
Antonio Zucca, Maria I. Pilo
wiley   +1 more source

Artificial Intelligence in Ellipsometry: Methods, Challenges, and Opportunities

Crystals
Spectroscopic ellipsometry (SE) is a non-destructive optical technique widely used to extract film thickness, optical constants, surface roughness, and compositional information.
Grazia Giuseppina Politano
doaj   +1 more source

Engineering Interfacial Conduction in ALD‐Al2Ox/STO Bilayer Dielectrics Toward Reliable Gate Dielectric Applications

Electron, EarlyView.
Bilayer Al2Ox/STO dielectrics combine strong leakage blocking with high dielectric response, but direct ALD growth can induce interfacial conduction. This work shows that the interface‐formation route controls conduction, with mechanical assembly suppressing the conductive interface.
Jie Wei, Junjie Shi, Zhewei Liu, Yang Liu, Xi Lin, Bo Qu, Ji Zhang, Sean Li   +7 more
wiley   +1 more source

In Situ Monitoring of Aptamer-Protein Binding on a ZnO Surface Using Spectroscopic Ellipsometry. [PDF]

Sensors (Basel), 2023
Alshammari A, van Zalinge H, Sandall I.
europepmc   +1 more source

Nanoscale Rear‐Interface Architecture Enables 36.2 mA cm−2 Photocurrent in Ultrathin and Bifacial ACIGS Solar Cells Through Light Management

Laser &Photonics Reviews, EarlyView.
An array of SiOx nanopillars is developed on ITO transparent rear contacts through nanoimprint lithography to promote light scattering in 500–600 nm bifacial ACIGS solar cells. This architecture increases the short‐circuit current density by 7.8 and 7.6 mA cm−2 under front (up to 36.2 mA cm−2) and rear illumination, respectively, offering a scalable ...
Enzo J. Ribeiro, André F. Violas, António J. N. Oliveira, Elizaveta Yakovleva, Bárbara L. Sieira, Xavier L. Pinheiro, Saeed Bayat, Paulo A. Fernandes, Susanne Siebentritt, Marika Edoff, Pedro M. P. Salomé, Jennifer P. Teixeira   +11 more
wiley   +1 more source