Results 121 to 130 of about 815,665 (302)

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

RE:Growth—A toolkit for analyzing secondary forest aboveground carbon dynamics in the Brazilian Amazon

open access: yesFrontiers in Forests and Global Change, 2023
Viola H. A. Heinrich   +9 more
doaj   +1 more source

Plasticidade anatômica das folhas de Xylopia brasiliensis Sprengel (Annonaceae) Leaf anatomical plasticity of Xylopia brasiliensis Sprengel (Annonaceae)

open access: yesActa Botânica Brasílica, 2005
A anatomia foliar do gênero Xylopia ainda é pouco explorada. A espécie Xylopia brasiliensis Sprengel, vulgarmente conhecida como pindaíba, ocorre tanto em mata primária como em vegetação modificada num amplo espectro de condições ambientais.
Cristina Filomena Justo   +3 more
doaj   +1 more source

Intelligent Acousto‐Electrical Metamaterials (IAM) for Sound Source Detection

open access: yesAdvanced Materials, EarlyView.
Our proposed metamaterial concept enables sound source detection using a single material, in contrast to conventional arrays that require dozens or even hundreds of transducers. We show that the coupled acoustic–vibrational–electrical responses in piezoelectric metamaterials give rise to topology‐governed charge transport, producing distinct voltage ...
Victor Couëdel   +7 more
wiley   +1 more source

Porosity Engineering of MXene Architectures: Toward High‐Performance Aqueous Electrochemical Energy Storage

open access: yesAdvanced Materials, EarlyView.
This review systematically summarizes recent advances in porosity engineering of MXenes, with a focused discussion on their structure‐governed energy storage properties. A critical analysis of structure–property relationships is presented across alkali‐ion batteries, multivalent‐ion batteries, and supercapacitors.
Shude Liu   +8 more
wiley   +1 more source

Estimating above ground net biomass change in tropical and subtropical forests: refinement of IPCC default values using forest plot data [PDF]

open access: yes, 2019
As countries advance in greenhouse gas (GHG) accounting for climate change mitigation, consistent estimates of above ground biomass (AGB) net change are needed for the tropics and subtropics.
Anderson-Teixeira, Kristina   +33 more
core  

Ultrafast Vertical Organic Electrochemical Transistors With Ion‐Permeable Conductive Polymer Top Electrodes

open access: yesAdvanced Materials, EarlyView.
Vertical organic electrochemical transistors (vOECTs) are limited in speed by ion‐impermeable metal electrodes that slow ion injection. Using ion‐permeable PBFDO top electrodes allows direct vertical ion injection into BBL channels, achieving high current densities (>400 A cm−2), large on/off ratios (>106), and ultrafast switching in 28 µs. This sets a
Han‐Yan Wu   +14 more
wiley   +1 more source

Decadal Changes in Population Structures of Rare Oak Species Quercus chungii

open access: yesEcology and Evolution
Quercus chungii, a rare and endangered endemic tree species, is found exclusively in subtropical regions of China. Understanding the population structure and temporal dynamics of Q.
Xueer Zhong   +7 more
doaj   +1 more source

Spatial Distribution Patterns of Dominant Tree Species and Their Associations with Soil Factors in Subalpine Secondary Forests of Western Sichuan

open access: yesPlants
Spatial pattern analysis is essential for understanding forest structure and successional dynamics. Focusing on natural secondary forests in the subalpine region of western Sichuan, China, we established two 1-hectare permanent plots to investigate the ...
Jingdong Zhao   +6 more
doaj   +1 more source

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