Results 171 to 180 of about 35,975 (303)

Supramolecular Chiral Assembly of Open‐Shell Quinoids With Chiral Additives and Their Spin‐Dependent Transport in Magneto Field‐Effect Transistors

Small, EarlyView.
Open‐shell quinoids with intrinsic spins are assembled into chiral supramolecular structures via blending with chiral additives. Thermal annealing induces stable co‐crystallization, leading to a 30‐fold amplification of chirality (gabs = 1.23 × 10−2). Significantly, this study represents the first integration of spin‐possessing chiral assemblies into ...
Younghyo Kim, Jeongwoo Beak, Yunseul Kim, Seungrae Cho, Byungho Park, Kyoungtae Hwang, Kihyeun Kim, David H. Waldeck, Minwoo Lee, Taesun Yun, Chang‐Lyoul Lee, Dong‐Yu Kim   +11 more
wiley   +1 more source

Reproducible Fabrication of a Chamber for Birefringence Imaging: Experimental Test with Temperature-Controlled Liquid-Crystalline DNA Assemblies. [PDF]

ACS Omega
Sugai H, Watanuki K, Toyoda M, Yamazaki A, Yoshida N, Maeda S, Ando H, Hamada S, Kinbara K.   +8 more
europepmc   +1 more source

Birefringence imaging

, 2001
Many transparent materials are optically anisotropic i.e. the refractive index varies with the polarisation orientation of the light. The variation, birefringence, can reveal the underlying anisotropy of the material, whether this anisotropy is caused by
Geday, M.A.
core  

Ladderization: A Powerful Strategy for Controlling Supramolecular Helical Ordering, Amplifying Asymmetry, and Emerging and Enhancing Circularly Polarized Luminescence

Small, EarlyView.
π‐Conjugated chiral ladder polymers with enantiopure side groups exhibit helical ordering‐induced circularly polarized luminescence (CPL) in poor solvents and in the film state. Vapor‐annealed films show a particularly strong CPL with glum values of > 0.1. Blending chiral/achiral ladder polymers markedly amplifies the asymmetry in the film.
Tomoyuki Ikai, Koki Nishino, Nichito Kawabata, Kosuke Oki, Mitsuo Hara, Yukikazu Takeoka, Eiji Yashima   +6 more
wiley   +1 more source

Point-to-volume engineering enables enhanced birefringence and a wide bandgap in hybrid halide ultraviolet nonlinear optical crystals. [PDF]

Chem Sci
Wu J, Li RN, Yao WD, Fu YF, Guo SP.
europepmc   +1 more source

Birefringence characterization of fibres without polarizer

, 1987
Two new simple interferometric methods for birefringence measurements are described applying to either low- or high-birefringence fibres and to any kind of birefringence, the set-up being free of a polarizing ...
Thevenaz, Luc, Pellaux, Jean-Paul, Von Der Weid, Jean-Pierre   +2 more
core  

Liquid Crystal Polymers as Intrinsically Magnetic and Programmable Soft Materials for Microrobotics

Small, EarlyView.
Liquid crystal polymers (LCPs) are proposed as intrinsically magnetic, programmable, soft materials for microrobotics. Magnetic torque‐driven manipulation of LCP microobjects is achieved and characterized in terms of the step‐out frequency, reaching ∼0.6 Hz in a ∼250 mT magnetic field. The orientation of LCP microobjects in the magnetic field and their
Alexandra Gruzdenko, Ignacio Becerra Osorio, Max de Sain, Albert P. H. J. Schenning, Jaap M. J. den Toonder, Michael G. Debije   +5 more
wiley   +1 more source

All-optical polarization control in time-varying low-index films via plasma symmetry breaking. [PDF]

Nat Photonics
Jaffray W, Stengel S, Boltasseva A, Shalaev VM, Vincenti MA, de Ceglia D, Scalora M, Rizza C, Ferrera M.   +8 more
europepmc   +1 more source

A Newly Discovered Tablet‐Making Facility in Nineveh: Insights From Scientific Analysis

Archaeometry, EarlyView.
ABSTRACT This paper addresses the question of tablet technology in the Neo‐Assyrian capital city of Nineveh. Recent excavations in the lower town of Nineveh by the Iraqi–Italian Archaeological Expedition uncovered an exceptional assemblage of more than 200 tablets from an elite residence that appears to have included a scriptorium.
Mathilde Jean, Michela Spataro, Jonathan Taylor, Gianfranco Ulian, Giovanni Valdré, Gabriele Giacosa, Eleonora Mariani, Nicolò Marchetti   +7 more
wiley   +1 more source

A study of the interference colors of the microscopic textures simulated along the lyotropic phase sequence: cholesteric discotic-cholesteric biaxial-unwound cholesteric calamitic. [PDF]

Eur Phys J E Soft Matter
Lüders DD, Akpinar E, Delmanoco GE.
europepmc   +1 more source