Results 131 to 140 of about 2,144,094 (388)

Engineering Porous Hollow Metal‐Poly(Heptazine Imide) Spheres: An Optimized Synthetic Strategy for Controlling Surface, Morphology, and Properties

open access: yesAdvanced Functional Materials, EarlyView.
Hollow poly(heptazine imide) spheres are prepared through a novel approach that integrates hard templating with ionothermal synthesis. This method enables precise control over surface area, pore volume, hydrophilicity, light absorption, band position, and metal composition. These tunable properties facilitate the customized design of semiconductors for
Lingli Ni   +10 more
wiley   +1 more source

Probing the Variation of the Intervalley Tunnel Coupling in a Silicon Triple Quantum Dot [PDF]

open access: gold, 2021
Felix Borjans   +7 more
openalex   +1 more source

Pentagonal 2D Altermagnets: Material Screening and Altermagnetic Tunneling Junction Device Application

open access: yesAdvanced Functional Materials, EarlyView.
From a database of 170 pentagonal 2D materials, 4 candidates exhibiting altermagnetic ordering are screened. Furthermore, the spin‐splitting and unconventional boundary states in the pentagonal 2D altermagnetic monolayer MnS2 are investigated. A MnS2‐based altermagnetic tunneling junction is designed and, through ab initio quantum transport simulations,
Jianhua Wang   +8 more
wiley   +1 more source

GaAs/GaP quantum dots: Ensemble of direct and indirect heterostructures with room temperature optical emission

open access: yes, 2015
We describe the optical emission and the carrier dynamics of an ensemble of self-assembled GaAs quantum dots embedded in GaP(001). The QD formation is driven by the 3.6 % lattice mismatch between GaAs and GaP in Stranski-Krastanow mode after deposition ...
Boeck, T.   +9 more
core   +1 more source

Infrared Quantum Dots: Progress, Challenges, and Opportunities.

open access: yesACS Nano, 2019
Infrared technologies provide tremendous value to our modern-day society. The need for easy-to-fabricate, solution-processable, tunable infrared active optoelectronic materials has driven the development of infrared colloidal quantum dots, whose band ...
Haipeng Lu   +3 more
semanticscholar   +1 more source

Non Thermal‐Driven Photocatalytic Ammonia Decomposition at Near‐Room Temperature on a Plasmonic Nanocone Array

open access: yesAdvanced Functional Materials, EarlyView.
Plasmonic photocatalytic ammonia decomposition occurs at near‐room temperature on a plasmonic Au nanocone array under visible light illumination. The nanostructure efficiently harnesses plasmonic modes, leading to increased reaction rates upon plasmon decay.
Thanh‐Lam Bui   +17 more
wiley   +1 more source

The effect of a hybrid coating of porous silicon and WS2 and MoS2 quantum dots on the electrical characteristics of photosensitive structures

open access: yesФизика волновых процессов и радиотехнические системы
Background. This paper examines the effect of the hybrid coating of quantum dots and porous silicon on the volt-ampere characteristic of photosensitive structures.
Natalia A. Poluektova   +2 more
doaj   +1 more source

Optical spectra of quantum dots: effects of non-adiabaticity

open access: yes, 2003
It is shown that in many cases an adequate description of optical spectra of semiconductor quantum dots requires a treatment beyond the commonly used adiabatic approximation.
Devreese, J. T.   +4 more
core   +1 more source

Carbon Dots and Graphene Quantum Dots in Electrochemical Biosensing

open access: yesNanomaterials, 2019
Graphene quantum dots (GQDs) and carbon dots (CDs) are among the latest research frontiers in carbon-based nanomaterials. They provide interesting attributes to current electrochemical biosensing due to their intrinsic low toxicity, high solubility in ...
S. Campuzano   +2 more
semanticscholar   +1 more source

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