Article
Chemistry, Multidisciplinary
Yongkai Wang, Jialin Sun, Zhiduo Li, Qingyan Han, Wei Gao, Lipeng Zhu, Jun Dong, Zhongyue Zhang
Summary: This study introduces a disruption layer and molybdenum disulfide into an L-shaped chiral nanohole array to achieve dynamic adjustment of narrow-band CD signals. The CD signals can be generated and adjusted by changing the structural parameters and the environmental temperature. Furthermore, the structure exhibits a high-quality factor, aiding in the design of chiral devices and improving the sensitivity of chiral molecule detection.
Article
Chemistry, Multidisciplinary
Antonio Elia Forte, David Melancon, Mohamed Zanati, Marta De Giorgi, Katia Bertoldi
Summary: Flexible metamaterials have been used to create functionality through tunable and unconventional response. This research employs chiral unit cells based on Archimedean spirals to transform linear displacement into twisting. It investigates the effect of geometry on the extension-twisting coupling and demonstrates the creation of mechanical pixels capable of modulating light transmission through deformation. Through experiments and analysis, 2D arrays of pixels are arranged to realize black and white and color displays, showcasing a methodology for designing flexible devices that can convert nonlinear elastic deformation to tunable optical transmittance.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Ankit Srivastava
Summary: This review extensively examines the role of causality and passivity principles in various areas of physics and engineering, including metamaterials. The aim is to review major results and contributions, provide a unified framework for understanding developments in different fields, and apply dispersion analysis to distributional and tensorial transfer functions.
MECHANICS OF MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xianye Li, Liang Xu, Pei Lin, Xiaodan Yang, Huamei Wang, Huaifang Qin, Zhong Lin Wang
Summary: Clusters of tightly coupled machinery units can exhibit collective behavior and behave like metamaterials to address environmental disturbances. This is particularly important for harnessing water wave energy, a promising clean energy source with huge reserves but a formidable challenge for traditional generators. In this study, a novel three-dimensional chiral network of triboelectric nanogenerators (TENGs) is designed to effectively harvest water wave energy. The network, unlike bulky and rigid machines, features a distributed architecture with chiral connections between unbalanced units, providing flexibility, hyper-elasticity, and wave absorption behavior similar to mechanical chiral metamaterials. The network can be configured to harvest wave energy in all directions at different scales and depths. An integrated energy harvesting system, combined with a power management circuit, enhances the stored energy by approximately 319 times. This study demonstrates the great potential of the novel 3D chiral network for blue energy harvesting and self-powered systems based on TENGs, which can adapt better to harsh ocean environments with flexible and distributed characteristics. It also presents a paradigm shift from mechanical metamaterial designs to energy harvesting networks, inspiring innovative energy harvesting systems and strongly coupled machinery systems based on metamaterials.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Maryam Hajji, Michele Cariello, Cameron Gilroy, Martin Kartau, Christopher D. Syme, Affar Karimullah, Nikolaj Gadegaard, Aurelie Malfait, Patrice Woisel, Graeme Cooke, William J. Peveler, Malcolm Kadodwala
Summary: The use of chiral quantum metamaterials in nano-cavities can significantly enhance the detection sensitivity of chiral molecules, with the ability to easily detect six biomolecules per cavity. This phenomenon is attributed to significant local changes in the optical density of states caused by the introduction of biomolecules, which are invisible in classical light-scattering measurements.
Article
Chemistry, Multidisciplinary
Peng Wang, Rui Hu, Xiaotian Huang, Teng Wang, Shulin Hu, Min Hu, Huanhuan Xu, Xiaoyu Li, Keshuai Liu, Shengxiang Wang, Lei Kang, Douglas H. Werner
Summary: This paper demonstrates a chiral metamaterial capable of exhibiting strong chiroptical responses at THz frequencies using a two-step textile manufacturing approach, which is of great significance for the control of THz radiation.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Cheng Xu, Zhihao Ren, Hong Zhou, Jingkai Zhou, Dongxiao Li, Chengkuo Lee
Summary: This study investigates the impact of near-field coupling on the chirality response of chiral metamaterials. It is observed that strong near-field coupling induces less chiral response, providing evidence for the assumption. The study also demonstrates the use of enhanced near-field coupling for glucose enantiomer sensing and explores the potential of using arrayed metamaterials for broadband signal detection.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Optics
Somaye Kaviani Dezaki, Amir Nader Askarpour, Abdolali Abdipour
Summary: The study introduces a waveguide-based method to measure chirality and distinguish enantiomers of molecules by exploiting modal degeneracy lifting in bi-isotropic core. The proposed sensor can determine the chirality parameter of the material under test and can be used for various materials with nonzero chirality parameter in different frequency bands. This approach improves circular dichroism response and surpasses conventional CD spectroscopy methods.
Article
Nanoscience & Nanotechnology
Xiu Yang, Shanshan Huang, Rohit Chikkaraddy, Eric S. A. Goerlitzer, Feiliang Chen, Jinglei Du, Nicolas Vogel, Thomas Weiss, Jeremy J. Baumberg, Yidong Hou
Summary: Low-cost and large-area chiral metamaterials (CMs) are highly desired for practical applications. In this study, a uniform large-area colloidal particle array was fabricated by interface-mediated self-assembly, and the handedness of chiral plasmonic shells (CPSs) was precisely controlled using glancing angle deposition (GLAD). The CPSs showed strong chiroptical signals and excellent sensor performance in detecting chiral molecules due to the formation of uniform superchiral fields.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Astronomy & Astrophysics
P. B. Wiegmann
Summary: In this study, we developed a spacetime-covariant Hamilton principle for the evolution of barotropic flows of a perfect fluid in the presence of an external axial-vector potential. It was found that the axial-current anomaly in quantum field theories with Dirac fermions can be interpreted as a kinematic property of classical hydrodynamics, and interesting effects can occur under the simultaneous actions of the electromagnetic field and the axial-vector potential. By using the Hamilton principle, we obtained the extended Euler equations accounting for the axial potential and derived anomalies in the divergence of the axial and vector currents. Our approach provides a hydrodynamic expression for the vector and axial currents and establishes a platform for studying flows with a chiral imbalance and their associated anomalies.
Article
Physics, Multidisciplinary
Xin Wang, Ya-Fen Lin, Jia-Qi Li, Wen-Xiao Liu, Hong-Rong Li
Summary: Superconducting metamaterials, designed and fabricated with structured fundamental circuit elements, have been used to explore unconventional quantum phenomena in circuit quantum electrodynamics (circuit-QEDs). This study proposes a method to engineer a 1D Josephson metamaterial as a chiral waveguide by programming spatiotemporal modulation on its effective impedance. By utilizing Brillouin-scattering process, it is found that non-trivial spectrum regimes can result in unidirectional propagation of photons, enabling the coupling of superconducting qubits with the metamaterial waveguide and the unidirectional dissipation of photons.
NEW JOURNAL OF PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Kyu-Tae Lee, Byunghoon Kim, Lakshmi Raju, Sean P. Rodrigues, Doo-Hyun Ko, Wenshan Cai
Summary: This article demonstrates a method for effectively discriminating between enantiomers using an upconverting chiral plasmonic metamaterial, which changes the circular dichroism of the chiral metamaterial platform.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jun Guo, Guoqiang Xu, Di Tian, Zhiguo Qu, Cheng-Wei Qiu
Summary: This article reports a method for creating passive ultra-conductive heat transport using natural materials. By regulating the local thermal resistance through vertical thermal transport channels, the experimental results demonstrate high heat conductivity without the need for additional energy input. These findings have significant potential in the field of thermal management.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yaoran Liu, Zilong Wu, Pavana Siddhartha Kollipara, Richard Montellano, Kumar Sharma, Yuebing Zheng
Summary: The study demonstrated label-free detection of chiral molecules with microbubble-induced rapid accumulation on plasmonic chiral sensors, achieving ultra-high sensitivity and low sample consumption. This method has potential for clinical applications in detecting abnormal chirality in biofluids related to diabetes.
Article
Multidisciplinary Sciences
Andrew D. Paterson, Sang-Cheol Seok, Veronica J. Vieland
Summary: Next-generation sequencing has revolutionized genetic discoveries for rare diseases. However, most identified variants are rare and found in small pedigrees, posing challenges for estimating penetrance and providing genetic counseling.
Article
Nanoscience & Nanotechnology
Kirill Voronin, Alexey S. Taradin, Maxim Gorkunov, Denis G. Baranov
Summary: Geometrical chirality is a universal property found in objects of varying length scales. Interaction between chiral matter and chiral light allows for discrimination of enantiomers, expanding tools for studying chiral matter.
Article
Nanoscience & Nanotechnology
Maxim Gorkunov, Alena Mamonova, Irina Kasyanova, Alexander A. Ezhov, Vladimir V. Artemov, Ivan Simdyankin, Artur R. Geivandov
Summary: This study demonstrates the spatial modulation of transmitted light wavefronts by self-assembled liquid crystals on nanopatterned alignment layers. By using a double-sided metasurface design, the spectral range is expanded and additional functionality is acquired. The results show efficient and reversible light refraction within the visible wavelength range, as well as remarkable mechanical reconfigurability.
Article
Chemistry, Medicinal
Igor D. Zlotnikov, Alexander A. Ezhov, Rostislav A. Petrov, Maksim A. Vigovskiy, Olga A. Grigorieva, Natalya G. Belogurova, Elena Kudryashova
Summary: This study proposes two key approaches for solving bacterial infections and resistant strains, including the use of a three-component polymer system to deliver drugs to macrophages and the use of adjuvants as synergists for antibiotics. Experimental results show that these methods can enhance the effectiveness and penetration of drugs, and have potential value in overcoming multidrug resistance.
Article
Chemistry, Multidisciplinary
Alexandra I. Zvyagina, Alexey E. Alexandrov, Alexey A. Averin, Ivan N. Senchikhin, Maxim R. Sokolov, Alexander A. Ezhov, Alexey R. Tameev, Maria A. Kalinina
Summary: A one-step protocol for interfacial self-assembly of graphene oxide (GO), glutamine-substituted perylene diimide (PDI-glu), 10,12-pentacosadiynoic acid (PCDA), and zinc acetate into three- and four-component hybrid nanofilms was developed. The assembled hybrids showed light-induced energy transfer and high stability, making them suitable for organic electronics. The method can be extended to other organic chromophores and surfactants to create multicomponent functional GO-based nanohybrids.
Article
Chemistry, Multidisciplinary
A. V. Mamonova, I. V. Simdyankin, I. V. Kasyanova, V. V. Artemov, A. R. Geivandov, S. P. Palto, A. A. Ezhov, M. V. Gorkunov
Summary: In this study, we report on the design, fabrication, and characterization of liquid crystal metasurfaces. These metasurfaces can distribute light in different ways and can switch between diffraction and transparent states by low voltage. We analyze the achievements and discuss the potential application prospects of liquid crystal metasurfaces.
Article
Polymer Science
Alexey S. Merekalov, Yaroslav I. Derikov, Alexander A. Ezhov, Yury A. Kriksin, Igor Ya. Erukhimovich, Yaroslav Kudryavtsev
Summary: The rearrangement of lamellar and hexagonal patterns in thin films of copolymers is studied under the influence of an AC electric field and chloroform vapor. It is shown that a strong AC field can effectively orient microphase-separated domains along the field direction. The risk of breakdown is reduced and effects related to ionic transport are eliminated. The role of exposure time, field strength, and frequency is investigated. The observed morphological rearrangements can be important for practical applications.
Article
Biochemistry & Molecular Biology
Igor D. D. Zlotnikov, Natalia V. V. Dobryakova, Alexander A. A. Ezhov, Elena V. V. Kudryashova
Summary: A strategy is proposed to enhance the efficacy and selectivity of cytotoxic agents against cancer cells by utilizing the differences in morphology and microenvironment between tumor and healthy cells. The developed enhanced formulations of cytotoxic agents, including efflux inhibitors and ion channel inhibitors, demonstrate increased permeability in A549 cells and a protective effect on healthy HEK293T cells.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Nanoscience & Nanotechnology
Denis G. Baranov, Christian Schafer, Maxim V. Gorkunov
Summary: Coupling between light and material excitations generates a variety of optical phenomena. Polaritons, as eigenstates of a coupled system, exhibit properties of both photons and electrons, and offer new ways for controlling electronic transport and chemical kinetics. In chiral quantum emitters, which have nonzero electric and magnetic dipole moments, there is potential for novel effects in strong light-matter coupling. This emerging field at the intersection of nanophotonics, quantum optics, and chemistry is still in its early stages, but holds great promise for future research.
Article
Pharmacology & Pharmacy
Igor D. Zlotnikov, Dmitriy A. Streltsov, Alexander A. Ezhov, Elena V. Kudryashova
Summary: The low effectiveness of chemotherapy is due to low target bioavailability of drugs and the efflux process. To overcome this, polymeric micellar systems based on chitosan grafted with fatty acids (different types) were developed to increase the solubility and bioavailability of drugs and enhance interaction with tumor cells. Adjuvants, such as eugenol, were also used to enhance the accumulation and retention of drugs in tumor cells. pH- and temperature-sensitive micelles showed high entrapment efficiency and prolonged drug release. The combined micellar drugs significantly increased the penetration of cytostatics into cancer cells and inhibited efflux.
Article
Pharmacology & Pharmacy
Igor D. Zlotnikov, Alexander A. Ezhov, Artem S. Ferberg, Sergey S. Krylov, Marina N. Semenova, Victor V. Semenov, Elena V. Kudryashova
Summary: This study successfully delivered a potential antitumor drug, combretastatin derivatives, and related organic compounds to tumor cells using polymeric micelles based on chitosan and fatty acids as carriers, significantly reducing penetration into normal cells. The selectivity of cytostatics against tumors was greatly improved by the micelles, as demonstrated by various experimental methods. Additionally, the study proposed a powerful approach using flow cytometry to observe and quantify the absorption/adsorption of cytostatic fluorophores by cells, allowing for differentiation between specific and non-specific binding.
Article
Medicine, General & Internal
Igor D. D. Zlotnikov, Alexander A. A. Ezhov, Maksim A. A. Vigovskiy, Olga A. A. Grigorieva, Uliana D. D. Dyachkova, Natalia G. G. Belogurova, Elena V. V. Kudryashova
Summary: Visualization of drug-cell interactions enhances drug bioavailability, selectivity, and effectiveness. CLSM and FTIR spectroscopy were used to study antibacterial drug interactions with latent bacterial cells, offering potential solutions to multidrug resistance and severe cases. The mechanism of rifampicin penetration into E. coli cells was explored by monitoring changes in cell wall components and intracellular proteins. Efflux inhibition and drug delivery systems for macrophages were also investigated using FTIR and CLSM techniques.
Article
Optics
Lucca Kuehner, Fedja J. Wendisch, Alexander A. Antonov, Johannes Buerger, Ludwig Huettenhofer, Leonardo de S. Menezes, Stefan A. Maier, Maxim V. Gorkunov, Yuri Kivshar, Andreas Tittl
Summary: This research introduces a novel nanofabrication approach to effectively control resonance features and nanophotonic functionalities in all-dielectric metasurfaces by unlocking the height of individual resonators. Using this approach, an optical all-dielectric metasurface with maximum intrinsic chirality is demonstrated, which selectively responds to light of a particular circular polarization depending on the structural handedness.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Multidisciplinary Sciences
Seongheon Kim, Soo-Chan An, Younggon Kim, Yun Seop Shin, Alexander A. Antonov, In Cheol Seo, Byung Hoon Woo, Yeonsoo Lim, Maxim V. Gorkunov, Yuri S. Kivshar, Jin Young Kim, Young Chul Jun
Summary: Chiral light sources in ultracompact device platforms have great potential for various applications. This study presents a chiral light source concept based on thin-film perovskite materials and demonstrates chiral electroluminescence with a peak degree of circular polarization (DCP) of 0.38. The proposed chiral light sources utilize a metacavity made of metal and dielectric metasurface to achieve a high DCP, and are particularly advantageous for applications requiring both helicities of chiral light beams.
Article
Chemistry, Inorganic & Nuclear
Irina O. Dzhun, Andrey V. Gerasimenko, Alexander A. Ezhov, Stanislav I. Bezzubov, Valeria V. Rodionova, Christina A. Gritsenko, Nikolai G. Chechenin
Summary: Thin film ferromagnet/antiferromagnet (F/AF) exchange biased structures, which are widely used in GMR spin valves, show promising potential for antiferromagnetic spintronic and spin-orbitronic devices. In this study, the temperature dependence of magnetization dynamics in Co/IrMn and Co/FeMn F/AF structures was investigated using ferromagnetic resonance (FMR). The results showed that the resonance field in Co/IrMn decreased significantly with temperature, attributed to the increase in rotatable anisotropy, while the contribution of rotatable anisotropy in Co/FeMn was much weaker. Additionally, the FMR linewidth for the free Co layer increased with decreasing temperature, accompanied by a slow relaxation process, whereas the additional linewidth contribution in Co/IrMn and Co/FeMn structures was correlated with the change in exchange anisotropy.
