Chiral optics
WebThe realization of flexible tuning and enhanced chiral responses is vital for many applications in nanophotonics. This study proposes to manipulate the collective optical responses with heterostructures consisting of chiral dielectric metasurfaces and achiral J-aggregates. Owing to the resonance coupling between the chiral quasi-bound states in … WebMay 4, 2024 · Cellulose nanocrystal (CNC)-based chiral nematic films are important optical materials due to their ability to selectively reflect circularly polarized light but are often limited in application by their instability in water. Improving the mechanical performance and stability of photonic CNC-based materials in water is therefore of great importance for advancing …
Chiral optics
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WebFeb 16, 2024 · In quantum optics, it is common to assume that atoms are pointlike objects compared to the wavelength of the electromagnetic field they interact with. However, this dipole approximation is not always valid, e.g., if atoms couple to the field at multiple discrete points. Previous work has shown that superconducting qubits coupled to a one … WebSep 2, 2024 · This framework within the dipole approximation has also been used to model chiral molecules to study plasmon-enhanced circular dichroism 23, helical dichroism 67 …
WebMay 12, 2024 · Topological physics has introduced a modern design principle in optics, providing build-in protection to specific types of disorder. This work demonstrates how … WebMar 17, 2024 · We also characterize their chiral-optical forces with high spatial and force resolution using combined optical and atomic force microscopy. These optical tweezers exhibit an enantioselective optical force contrast exceeding 10 pN, enabling selective attraction or repulsion of enantiomers based on the illumination polarization.
WebApr 1, 2024 · Light and electron microscopy, and reflectance spectra of a CNC film. (a) Dry chiral nematic CNC films in a petri dish formed from a 1.1 w/w % CNC suspension in … WebJul 1, 2011 · Fig. 1 Topological defect lines tie links and knots in chiral nematic colloids. (A) A twisted defect ring is topologically equivalent to the unknot and appears spontaneously around a single microsphere.The molecular orientation on the top and bottom of the cell coincides with the orientation of the crossed polarizers. (B to E) Defect loops of colloidal …
WebChiral metamaterials in the mid-infrared wavelength range have tremendous potential for studying thermal emission manipulation and molecular vibration sensing. Here, we present one type of chiral plasmonic metasurface absorber with high circular dichroism (CD) in absorption of more than 0.56 across the mid-infrared wavelength range of 5–5.5 µm. The …
WebApr 1, 2024 · Light and electron microscopy, and reflectance spectra of a CNC film. (a) Dry chiral nematic CNC films in a petri dish formed from a 1.1 w/w % CNC suspension in water (see Materials & Methods). how to screenshot on z bookWebElectromagnetic fields with strong optical chirality interact strongly with chiral molecules and, therefore, can be used for enhancing the sensitivity of chiroptical spectroscopy techniques. Besides a short review of the latest results in the field of plasmonically enhanced enantiomer discrimination, this book introduces the concept of chiral ... how to screenshot on zbookWebFeb 16, 2024 · In quantum optics, it is common to assume that atoms are pointlike objects compared to the wavelength of the electromagnetic field they interact with. However, this … how to screenshot on your laptop hpWebApr 3, 2024 · Herein, a chiral charge transfer crystal that exhibits reversible phase transition between chiral space groups has been fabricated. When the phase switches from left-handed to right-handed chiral space group, more pronounced orbital angular momentum effects will be generated, where magneto-responsive optics are the opposite for chiral … how to screenshot on your mac computerWebApr 14, 2024 · Chiral enantiomer recognition has important research significance in the field of analytical chemistry research. At present, most prepared chiral sensors are used for recognizing amino acids, while they are rarely used in the identification of drug intermediates. This work found that combining CS and reduced graphene oxide can … how to screenshot on zephyrus laptopWebMar 27, 2024 · A theoretical and computational study of the effects of the real and imaginary parts of the complex chirality parameter on the characteristics of light propagation in planar waveguides is presented. Symmetric and asymmetric structures using complex chiral media in the cladding region are analyzed. The guided modes are hybrid modes due to coupling … how to screenshot on zephyrus g14WebReflectance anisotropy spectroscopy (RAS) is a surface-sensitive optical technique with significant peculiarities: it strongly reduces or avoids the contamination or even damage of the sample (when electrons or charged particles are used as probes in other experimental techniques), is utilizable in vacuum, in atmosphere or in transparent media (also in … how to screenshot on z flip 4