Results 101 to 110 of about 149 (149)

Decoding Directional Control in Metal‐Assisted Chemical Etching via Catalyst Architecture

Advanced Materials, EarlyView.
Metal‐assisted chemical etching (MaCE) enables silicon nanostructure fabrication but suffers from isotropic undercutting. This study highlights the critical role of catalyst morphology in etching directionality. High‐aspect‐ratio catalysts induce lateral etching, while thermal treatment at 450 °C stabilizes catalyst geometry, promoting vertical etching.
Yejin Han, Jihwan Jeong, Hyein Cho, Yebin Ahn, Soohyeok Park, HyeonSeok Kim, Jae Yeong Shin, Min‐Joon Park, Taehyo Kim, Han‐Don Um   +9 more
wiley   +1 more source

Emergent Locomotion in Self‐Sustained, Mechanically Connected Soft Matter Rings

Advanced Materials, EarlyView.
Thermally fueled, self‐moving twisted rings made from liquid crystal elastomers are investigated. By studying single rings and linked knots, it is shown how autonomous locomotion emerges through coupling between the rings. The movement is programmable via handedness control at connection points, offering insights into collective behavior and ...
Hongshuang Guo, Kai Li, Arri Priimagi, Hao Zeng   +3 more
wiley   +1 more source

Photonic crystal fibers. [PDF]

Nanophotonics, 2008
openaire   +3 more sources

Conjugation Pathway of Benzobisoxazoles in Polymer Donors Mediates the Charge Management and Enables Organic Solar Cells with Record Certified Efficiency

Advanced Materials, EarlyView.
Herein, the conjugation pathway isomerism of the benzobisoxazole (BBO) building block is systematically compared, by which a certified efficiency of 19.1% is obtained in corresponding all‐polymer solar cells. Abstract Charge management plays a pivotal role in achieving high‐performance bulk heterojunction (BHJ) organic solar cells (OSCs). In this study,
Miao Liu, Lunbi Wu, Yulong Hai, Yongmin Luo, Yao Li, Rouren Chen, Yue Ma, Tao Jia, Qingduan Li, Sha Liu, Ruijie Ma, Yue‐Peng Cai, Jiaying Wu, Gang Li, Shengjian Liu   +14 more
wiley   +1 more source

Materials and Device Engineering Perspective: Recent Advances in Organic Photovoltaics

Advanced Materials, EarlyView.
This review article provides a comprehensive overview of recent advances in organic photovoltaics (OPVs), covering key aspects such as material development, morphology control, stability challenges, and emerging applications—including semitransparent OPVs.
Ying Zhang, Hao Xia, Jiangsheng Yu, Yang Yang, Gang Li   +4 more
wiley   +1 more source

Halogen‐Bonded Liquid Crystal Elastomers as Initiator‐Free Photochemical Actuators

Advanced Materials, EarlyView.
The combination of dynamic disulfide bonds and halogen bonds in chain‐extended liquid crystal elastomers enables the fabrication of photochemical actuators without the need for a photoinitiator, advancing the design of multimodal soft actuators that can be reprogrammed and reprocessed through supramolecular functionalization.
Hongshuang Guo, Roshan Nasare, Chen Liang, Kim Kuntze, Eugene M. Terentjev, Arri Priimagi   +5 more
wiley   +1 more source

Synthetic Chromatophores for Color and Pattern Morphing Skins

Advanced Materials, EarlyView.
Cephalopods use chromatophore organs (muscle‐actuated pigment sacs) to alter their skin color and pattern. Synthetic chromatophores, which closely mimic the mechano‐optical process found in cephalopods using stimuli‐responsive microscale hydrogel actuators, are reported.
Brennan P. Watts, Matthew R. Jamison, John M. Kapitan, Nengjian Huang, Delroy Taylor, Stephen A. Morin   +5 more
wiley   +1 more source

Enhanced Deformability Through Distributed Buckling in Stiff Quasicrystalline Architected Materials

Advanced Materials, EarlyView.
Quasi‐periodic metamaterials combine stiffness and large‐strain deformability, overcoming limitations of traditional stretching‐dominated periodic designs that are prone to global buckling instabilities and catastrophic layer collapses. By leveraging non‐uniform force chains, they achieve high isotropic stiffness, stable deformation, and remarkable ...
Matheus I. N. Rosa, Konstantinos Karapiperis, Kaoutar Radi, Elias Pescialli, Dennis M. Kochmann   +4 more
wiley   +1 more source

Investigating Dopant Effects in ZnO as an Electron Transport Layer for Enhanced Efficiency in Organic Photovoltaics

Advanced Materials Interfaces, EarlyView.
By doping the elements with different numbers of valence electrons (Al3+ and Sn4+ ions) into the ZnO matrix, device conversion efficiencies of 8.69% and 9.21%, respectively, are achieved. The ultrafast time‐resolved studies show that the elevated carrier concentration in Sn‐doped ZnO, in comparison with Al‐doped ZnO and un‐doped ZnO, plays a ...
Anusha Puliparambil Thilakan, Pei‐Lun Hung, Jin‐Bin Yang, Ding‐Lun Lin, Shien‐Der Tzeng, Yu‐Kuei Hsu, Chih‐Hung Tsai, Yi‐Hao Pai, Atshushi Yabushita, Chih‐Wei Luo, Mei‐Hsin Chen   +10 more
wiley   +1 more source

Amplification of Chiral Raman Scattering: A Review of Resonance Raman Optical Activity and Surface Enhanced Raman Optical Activity

Advanced Materials Interfaces, EarlyView.
Raman Optical Activity (ROA) uniquely probes chiral and stereochemical properties of molecules, revealing critical insights into fields like biology and material science. This review explores ROA's historical development, principles, limitations, and advancements, including resonance and surface‐enhanced methods to amplify signals.
Guojie Li, Ying Wang, Haipeng Lu, Zhifeng Huang   +3 more
wiley   +1 more source