Results 121 to 130 of about 61,960 (294)

Chirality Evolution of Supramolecular Helices by Electron Transfer Assisted Secondary Nucleation

Advanced Science
Chirality evolution is ubiquitous and important in nature, but achieving it in artificial systems is still challenging. Herein, the chirality evolution of supramolecular helices based on l‐phenylalanine derivative (LPF) and naphthylamide derivate (NDIAPY)
Laiben Gao, Xiaoqiu Dou, Chao Xing, Kaikai Yang, Changli Zhao, Chuanliang Feng   +5 more
doaj   +1 more source

Self‐Oscillating Helix Showing Amplified Winding and Unwinding Motions

Advanced Materials, EarlyView.
The hydrogel helix exhibits autonomous oscillation synchronized with the Ru(bpy)32+/3+ redox cycle in the Belousov–Zhabotinsky reaction. Periodic winding–unwinding accompanies magnified motion along one direction within the gel phase. ABSTRACT Helical architectures in nature amplify motion via winding–unwinding.
Taehun Chung, Jaewon Choi, Hyein Kim, Kanghyun Ki, Takahumi Enomoto, Dahyun Lee, Sungbin Shin, Anna Lee, Takamasa Sakai, Young‐Ki Kim, Ryo Yoshida, Youn Soo Kim   +11 more
wiley   +1 more source

Stoichiometry‐Programmed MXenes via Precursor Engineering for High‐Performance EMI Shielding and Energy Storage

Advanced Materials, EarlyView.
Precursor carbon stoichiometry programs internal strain and oxygen substitution in Ti3AlCxO2‐x, deterministically switching Ti3CxO2‐xTz MXenes between highly aligned 2D nanosheets and spontaneous 1D nanoscrolls. This synthesis‐stage architecture control enables ultrathin X/W‐band EMI shielding with outstanding mass‐normalized performance and bending ...
Jaeeun Park, Ju‐Hyoung Han, Yujin Chae, Mincheal Kim, Juwon Han, Younggeun Jang, Young Ho Jin, Jaewon Wang, Shi‐Hyun Seok, Yeoseon Sim, Zonghoon Lee, EunMi Choi, Soon‐Yong Kwon   +12 more
wiley   +1 more source

Lateral Chirality-sorting Optical Spin Forces in Evanescent Fields [PDF]

, 2014
The transverse component of the spin angular momentum of evanescent waves gives rise to lateral optical forces on chiral particles, which have the unusual property of acting in a direction in which there is neither a field gradient nor wave propagation ...
Capasso, Federico, Hayat, Amaury, Müller, J. P. Balthasar   +2 more
core  

Current Switching of Topological Spin Chirality in the van der Waals Antiferromagnet Co1/3TaS2

Advanced Materials, EarlyView.
Spin chirality plays a central role in quantum magnetism, governing spin winding and generating real‐space Berry phases. We propose the intriguing concept of current‐switching spin chirality and demonstrate it via unconventional intrinsic self‐spin‐orbit‐torque in pristine Co1/3TaS2, purely by electrical current and with high energy efficiency.
Kai‐Xuan Zhang, Seungbok Lee, Woonghee Cho, Je‐Geun Park   +3 more
wiley   +1 more source

Why Is the Mechanism Underlying the Chiral‐Induced Selectivity Effect Still Challenging?

Advanced Materials, EarlyView.
The chiral‐induced spin selectivity (CISS) effect is observed in many experimental configurations and for different materials. However, there are theoretical challenges in attempting to explain those results. A qualitative framework for explaining all the results is presented.
Ron Naaman, Yossi Paltiel
wiley   +1 more source

Chiral amplification in a cyanobiphenyl nematic liquid crystal doped with helicene-like derivatives

Beilstein Journal of Organic Chemistry, 2009
The addition of a chiral non-racemic dopant to a nematic liquid crystal (LC) has the effect of transferring the molecular chirality to the phase organization and a chiral nematic phase is formed.
Alberta Ferrarini, Silvia Pieraccini, Stefano Masiero, Gian Piero Spada   +3 more
doaj   +1 more source

Roadmap to Precision 3D Printing of Cellulose: Rheology‐Guided Formulation, Fidelity Assessment, and Application Horizons

Advanced Materials Technologies, EarlyView.
This critical review presents a comprehensive roadmap for the precision 3D printing of cellulose. Quantitative correlations link ink formulation and rheological properties to print fidelity and final material performance. This framework guides the development of advanced functional materials, from biomedical scaffolds to electromagnetic shielding ...
Majed Amini, Hadi Hosseini, Seyyed Alireza Hashemi, Mohammad Arjmand   +3 more
wiley   +1 more source

Emergent Chirality from Pairing of Achiral Molecules: Homochiral Chains of Paired 1,10‐Phenanthroline on Au(111)

Advanced Materials Interfaces
Understanding how chirality emerges from assemblies of achiral molecules is central to the study of symmetry breaking at surfaces. Here we show that achiral 1,10‐phenanthroline adsorbed on Au(111) generates chirality through a pairing‐driven hierarchical
Erlina Tik Man, Yuya Kaneko, Ryunosuke Kobata, Muhammad Alief Irham, Takaya Shimokawa, Tzu‐Yen Chen, Yukiko Obata, Kazutoshi Shimamura, Kenji Hayashida, Kotaro Takeyasu, Taro Koide, Sasfan Arman Wella, Junji Nakamura, Yasuo Yoshida   +13 more
doaj   +1 more source

Recent Advances on Thermochromic Inks for Security Applications

Advanced Materials Technologies, EarlyView.
Thermochromic security inks have garnered interest in recent years as security elements for authentication, information encryption, and anti‐counterfeiting. This review outlines different types of thermochromic materials, how they have been developed as functional inks, and how advancements in property enhancement, sustainability, and printing ...
Duarte B. Oliveira, Andreia Araújo, Elvira Fortunato, Rodrigo Martins, Marta C. Corvo, Emanuel Carlos   +5 more
wiley   +1 more source