Article
Multidisciplinary Sciences
Mikko Partanen, Jukka Tulkki
Summary: This study shows that the momentum and radiation pressure of light in negative-index metamaterials can be positive or negative depending on their subwavelength structure, with the material's negative momentum resulting from the optical force density causing negative radiation pressure.
SCIENTIFIC REPORTS
(2022)
Article
Materials Science, Multidisciplinary
G. L. Klimchitskaya, V. M. Mostepanenko, O. Yu. Tsybin
Summary: In this study, the nonequilibrium Casimir-Polder force between a nanoparticle and a graphene sheet kept at different temperatures was examined using the formalism of the polarization tensor in the framework of a Dirac model. The results demonstrate that the magnitude of the force increases with the temperature of the graphene sheet. The impact of nonequilibrium conditions on the force becomes smaller at larger separations. Our findings reveal that for a graphene sheet with a lower temperature than the environment, the attractive Casimir-Polder force vanishes at a specific separation distance and becomes repulsive at larger distances. This effect has potential applications in fundamental graphene research and force control in bioelectronic microdevices.
Article
Optics
Th K. Mavrogordatos
Summary: This article investigates the collapse of quantum multimodality in the strong-coupling limit of the weakly driven Jaynes-Cummings (JC) model during saturation of a multiphoton transition. Utilizing perturbative methods, the study highlights the significant role of quantum fluctuations and examines the presence of two quantum beats in the intensity correlation function of the forwards scattered photons during two- and three-photon resonance operations.
Article
Optics
Liang Yang, Aso Rahimzadegan, Vincent Hahn, Eva Blasco, Carsten Rockstuhl, Martin Wegener
Summary: Compared to 3D laser nanoprinting of polymers, the mechanisms in laser nanoprinting of metals are poorly understood. For platinum, the printing process begins with the formation of metal nanoparticles by photo-reduction of metal salts in aqueous solution. The in situ investigation of the printing process reveals that the formed metal nanoparticles are quickly ejected from the focus and adhere to the substrate surface to build up structures.
LASER & PHOTONICS REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Xiaoni Qi, Weichun Li, Bingbing Shi, Youming Zhang, Hong Yao, Qi Lin, Taibao Wei
Summary: By designing a light-activated platform based on internal-driven forces of a macrocyclic host, it is possible to achieve quenching and regeneration of fluorescent molecules, showing great potential for practical applications.
CHINESE CHEMICAL LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Ramon Torres-Cavanillas, Marc Morant-Giner, Garin Escorcia-Ariza, Julien Dugay, Josep Canet-Ferrer, Sergio Tatay, Salvador Cardona-Serra, Monica Gimenez-Marques, Marta Galbiati, Alicia Forment-Aliaga, Eugenio Coronado
Summary: This research presents a reversible 'self-strainable' system where strain is generated at the molecular level by introducing spin-crossover nanoparticles onto MoS2 layers, resulting in significant and reversible changes in the electrical and optical properties of the heterostructure.
Article
Chemistry, Physical
Ya Liu, Saisai Hou, Weixuan Zhang, Xiangdong Zhang
Summary: In this study, a method based on photonic crystal slabs is proposed to achieve the separation and purification of enantiomers in controllable all-optical platforms by changing the relative phase of incident light. Calculations and simulations demonstrate the feasibility and efficiency of this design, providing a possible route toward enantiopure syntheses.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Optics
Huan Tang, Renxian Li, Shuhong Gong, Liu Yang, Lixia Yang, Bing Wei, Zitong Zhu, F. G. Mitri
Summary: By investigating the interaction between a dielectric circular cylinder rotating at a stable angular velocity and a plane wave, the curved photonic nanojet (CPNJ) phenomenon is studied. The optical Magnus effect of the dielectric circular cylinder is verified, and the analytical expressions for the internal and external electric fields are derived. The numerical results analyze the influence of size parameter, relative refractive index, and rotating dimensionless parameter on the CPNJ. The curved effect of the photonic nanojet is emphasized, which can be used for off-axis photonic nanojet (PNJ) generation by adjusting the angular velocity of the dielectric cylinder.
Article
Multidisciplinary Sciences
Frank Y. Gao, Zhuquan Zhang, Zhiyuan Sun, Linda Ye, Yu-Hsiang Cheng, Zi-Jie Liu, Joseph G. Checkelsky, Edoardo Baldini, Keith A. Nelson
Summary: Studying nonequilibrium hidden states is important for understanding the strong coupling between microscopic degrees of freedom in quantum materials and for the development of optoelectronic devices. Using single-shot spectroscopy techniques, the researchers were able to directly visualize the ultrafast formation of a long-lived hidden phase in the electronic crystal 1T-TaS2. They also proposed a theory of fluctuation-dominated process to explain the nature of the metastable state.
Article
Engineering, Chemical
Min Li, Ji-Xin Xie, Peng Tan, Jun Liu, Chen Gu, Xiao-Qin Liu, Lin -Bing Sun
Summary: By utilizing surface plasmon resonance effect, Ag nanoparticles are used as nanoheaters targeted at active sites to elevate the temperature of CO2 adsorbents. Under visible-light irradiation, Ag nanoparticles convert light energy to heat and transfer heat to nearby active sites rapidly, achieving efficient desorption of CO2. This strategy also applies in fixed beds and provides a new avenue for advanced desorption systems.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Optics
Diego R. Abujetas, Manuel Marques, Jose A. Sanchez-Gil
Summary: Recent studies have shown the existence of optical forces and torques in sub-wavelength evanescent fields. Analytically, it was demonstrated that guided modes with transverse spin density induce optical torques. Hybrid modes supported by cylindrical waveguides exhibit intrinsic helicity leading to a rich distribution of longitudinal optical torques.
Article
Nanoscience & Nanotechnology
Xiaofei Wu, Raphael Ehehalt, Gary Razinskas, Thorsten Feichtner, Jin Qin, Bert Hecht
Summary: Researchers have successfully demonstrated the remote control of microscopic robots in two dimensions in all three degrees of freedom using unfocused light and plasmonic nanoantennas. This breakthrough has potential applications in transport, manipulation, and sensing of nano and mesoscale objects.
NATURE NANOTECHNOLOGY
(2022)
Article
Chemistry, Physical
Chi Xu, Subhajyoti Chaudhuri, Julian Held, Himashi P. Andaraarachchi, George C. Schatz, Uwe R. Kortshagen
Summary: Low-temperature plasmas in and in contact with liquids have been found to be a catalyst-free method for the selective, electrode-free, and green synthesis of novel materials. Short-lived solvated electrons are considered as the critical reducing species in the synthesis of nanomaterials, while the role of ultraviolet (UV) photons from plasma is less explored. In this study, it is demonstrated that UV radiation contributes approximately 70% of the integral plasma effect in synthesizing silver (Ag) nanoparticles within a glycerol solution. The UV radiation causes C-H bond cleavage of the glycerol molecules, resulting in the reduction of Ag+ ions to Ag neutrals and the formation of nanoparticle in the liquid phase.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Zeqiang Wang, Boyuan Cai, Zhengfen Wan, Yunyue Zhang, Xiaoguang Ma, Min Gu, Qiming Zhang
Summary: In this study, a novel optical bistable device structure is proposed, which achieves low-threshold and tunable optical bistability using graphene oxide integrated in the metal-dielectric-metal asymmetric nanocavity.
Article
Nanoscience & Nanotechnology
Jorge Luis-Hita, Juan Jose Saenz, Manuel Marques
Summary: This article explores how a dimer made up of two nanoparticles can obtain energy from a random electromagnetic field and achieve direct motion through asymmetries in the particles. The study finds that the force is non-zero only when at least one of the particles is absorbent. Additionally, it demonstrates that the nonreciprocity of the force leads to nonconservative interaction dynamics.
Article
Engineering, Electrical & Electronic
A. V. Nemykin, S. V. Perminov, L. L. Frumin, D. A. Shapiro
QUANTUM ELECTRONICS
(2015)
Article
Physics, Multidisciplinary
O. V. Belai, L. L. Frumin, S. V. Perminov, D. A. Shapiro
Article
Optics
L. L. Frumin, S. V. Perminov, D. A. Shapiro
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2013)
Article
Optics
S. V. Perminov, V. P. Drachev
OPTICS AND SPECTROSCOPY
(2009)
Article
Optics
Oleg V. Belai, Leonid L. Frumin, Sergey V. Perminov, David A. Shapiro
Article
Optics
L. L. Frumin, A. V. Nemykin, S. V. Perminov, D. A. Shapiro
Article
Optics
Sergey Perminov, Leonid L. Frumin, David A. Shapiro
Article
Physics, Multidisciplinary
S. V. Perminov, D. A. Shapiro
Summary: Discrete Dipole Approximation (DDA) is an effective method for light scattering calculation. This paper extends it to solve a 2-dimensional problem in two different semi-spaces and considers the influence of boundary conditions on electromagnetic fields. Through numerical calculations and comparisons, the correlation between the scattering angle function and previous results, as well as the red shift phenomenon of the plasmon resonance, are demonstrated.
Article
Physics, Multidisciplinary
A. S. Bereza, L. L. Frumin, A. Nemykin, S. Perminov, D. A. Shapiro
Article
Optics
A. S. Bereza, A. V. Nemykin, S. V. Perminov, L. L. Frumin, D. A. Shapiro
Article
Optics
Sergey V. Perminov, Vladimir P. Drachev, Sergey G. Rautian
Article
Optics
SV Perminov, SG Rautian, VP Safonov
OPTICS AND SPECTROSCOPY
(2003)
Article
Optics
VP Drachev, SV Perminov
APPLIED PHYSICS B-LASERS AND OPTICS
(2000)
Article
Physics, Multidisciplinary
SV Perminov, SG Rautian, VP Safonov
JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS
(2004)
