Results 191 to 200 of about 3,807,058 (336)

Nanoscale Optical Inhomogeneities From Compositional Segregation Within Individual GaN‐on‐Si Quantum Wells

Advanced Science, EarlyView.
This work visualizes local variations in luminescence and relates them to nanoscale chemical inhomogeneities in single InxGa1−xN quantum wells. We demonstrate that the elemental segregation is only inherent to quantum wells with high indium content. Density functional theory shows this to be the result of strain‐induced phase stabilization, explaining ...
Jing‐Yang Chung, Tara P. Mishra, Zackaria Mahfoud, Thomas E. Gage, Jianguo Wen, Katherine P. Rice, Isabelle Martin, Li Zhang, Govindo J. Syaranamual, Stephen J. Pennycook, Silvija Gradečak, Pieremanuele Canepa, Michel Bosman   +12 more
wiley   +1 more source

Partial ligand exchange on CsPbI₃ nanocrystals with alkyl phosphonium iodide improves phase stability and emission efficiency in light-emitting diodes. [PDF]

Chem Sci
Zhang S, Pegu M, Goldoni L, Roshan H, Filippi U, El Adel A, De Boni F, Lauciello S, Li Z, Song Y, Infante I, Di Stasio F, Manna L.   +12 more
europepmc   +1 more source

Solvent-Free Synthesis of Ultrabright Carbon Dots With Near-Unity Quantum Yield for High-Performance Light-Emitting Diodes. [PDF]

Adv Sci (Weinh)
A rational, solvent‐free synthesis utilizing 2,6‐diaminonaphthalene produces ultrabright green‐emissive carbon dots. Regulated by a self‐limiting oxidative capping mechanism, excitons undergo ultrafast intra‐particle funneling from the nitrogen‐doped carbon core to emissive surface traps.
Park H, Lee SH, Seo S, Park S, Ji SM, Jo H, Park S, Kim YH, Kwon W.   +8 more
europepmc   +2 more sources

Plaid‐Like Spin Splitting and Chirality of Magnon Bands in Antiferromagnetic MnTe2

Advanced Science, EarlyView.
Helicity‐ and angle‐resolved Raman spectroscopy reveals chiral magnons in the non‐coplanar antiferromagnet MnTe 2. Combined with first‐principles calculations and spin‐wave theory, the results establish its altermagnetic character through circular Raman dichroism, reduced rotational symmetry, and a distinctive plaid‐like momentum‐space magnon spin ...
Dirk Wulferding, Daehyeon An, Jiwon Choi, Dongmin Moon, Youngsu Choi, Sivasakthi Kuppusamy, Sritharan Krishnamoorthi, Raman Sankar, Myung Joon Han, Se Kwon Kim, Kwang‐Yong Choi   +10 more
wiley   +1 more source

Aqueous/Alcohol-Soluble Carbon Dot Light-Emitting Diodes. [PDF]

Adv Mater
Sha S, Hou Q, Yang Z, Zhao B, Lv Q, Liu Z, Qing Y, Ma H, Zhang C, Han B, Yu R, Tan Z.   +11 more
europepmc   +1 more source

Review of Gastrointestinal Capsule Robots: Materials, Actuation, Diagnostics, and Therapeutics

Advanced Science, EarlyView.
This review examines gastrointestinal capsule robots through a systems engineering lens, covering shell materials, actuation and localization strategies, diagnostic modalities, therapeutic interventions, and commercialization status. By mapping the complete technological chain from fabrication to clinical deployment, this work identifies critical gaps ...
Zengsheng Li, Zhongguo Ren, Yiliang Lin, Xianfeng Xia, Tianlong Li, Kai Fung Chan, Philip Wai Yan Chiu, Wei Peng Yong, Mengmeng Sun   +8 more
wiley   +1 more source

Engineering Slow‐Carrier Interfacial Recombination Enables Tailored Spectral Response

Advanced Science, EarlyView.
This work demonstrates that weak‐drift slow carriers are preferentially captured at generic semiconductor surfaces/interfaces and recombine. This process is manipulated to achieve tailored spectral response. A tens of µm‐wide depletion region is created to observe surface collection rates for photocarriers generated at different positions.
Yibo Zhang, Haozhe Wang, Zeke Liu, Yun Zhong, Zheng‐Hong Lu, Nazir P. Kherani   +5 more
wiley   +1 more source

630 nm light-emitting diode irradiation suppresses inflammation and promotes osteoblast differentiation in periodontal cell models - in vitro study. [PDF]

PLoS One
Lee JK, Lee MS, Jeong JH, Ahn SH.
europepmc   +1 more source

Polybromides Attraction‐Repulsion Regulation Promotes High‐Performance Zinc–Bromine Static Battery

Advanced Science, EarlyView.
Br3− attraction‐repulsion regulation enhances the reversibility and reaction kinetics of Zn–Br static batteries. Coin cell shows a high average discharge voltage of 1.73 V and a fast charge/discharge rate up to 32 mA cm−2. Pouch cell with a high areal capacity of 8.3 mAh cm−2 achieves a real capacity of 365 mAh after 100 cycles.
Jiamin Tang, Ling He, Lei Liu, Huanwei Li, Haichuan He, Jie Wang, Zhengxin Zhu   +6 more
wiley   +1 more source

Broad-linewidth sources result in a skin-tone bias in noninvasive optical measurement of oxygen saturation. [PDF]

J Biomed Opt
Blaney G, Fantini S.
europepmc   +1 more source