Article
Materials Science, Multidisciplinary
Takayuki Ishitobi, Kazumasa Hattori
Summary: By proposing novel triple-q multipole orders, the study sheds light on the two distinct low-temperature symmetry broken phases in PrV2Al20. Analysis under [111] magnetic fields reveals the origin of ferro octupole moments and their interactions. The anisotropies of quadrupole moments and the formation of triple-q orders play a crucial role in understanding the phase transitions in the system.
Article
Optics
Zhiwei Hu, Ximin Cui, Yang Li, Xiaobo Han, Huatian Hu
Summary: This study numerically demonstrates a simple plasmonic nanocube-hexagonal-nanoplate heterodimer that exhibits a strong, tunable self-induced transparency window. It also observes multiple exciton-induced transparency windows. These findings are important for understanding and manipulating light-matter interactions.
Article
Physics, Applied
Kengo Motokura, Minoru Fujii, Dmitry Nesterenko, Zouheir Sekkat, Shinji Hayashi
Summary: This study developed a simple technique to experimentally study the average behavior of local electric fields inside interacting planar waveguide layers. The observed changes in the local electric fields were well reproduced by simple analytical calculations, providing physical insights that cannot be obtained through electromagnetic calculations.
PHYSICAL REVIEW APPLIED
(2021)
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
Astronomy & Astrophysics
Hanlun Lei, Xiumin Huang
Summary: This study investigates the dynamical structures of the quadrupole-order resonance and the octupole-order resonance in non-restricted hierarchical planetary systems using perturbative treatments. The distribution of libration and circulation regions as well as flipping regions are explored analytically in the parameter space. The resonant Hamiltonian for octupole-order resonances is formulated, and phase portraits are generated to analyze the dynamical structures.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Physics, Nuclear
R. Budaca, P. Buganu, A. I. Budaca
Summary: The collective states of Ra-222 are analyzed using a phenomenological model based on an axial quadrupole-octupole Bohr Hamiltonian to determine their shape and the nature of the excited band. The excited band is explained by two competing excitation mechanisms, each with distinguishable spectral signatures. The study reveals that the ground state of Ra-222 exhibits a well stabilized equilibrium quadrupole-octupole deformation, which is correlated with a molecular state encountered along the predicted disintegration path within a microscopic-macroscopic model.
EUROPEAN PHYSICAL JOURNAL A
(2023)
Article
Materials Science, Multidisciplinary
Siyuan Shen, Zhaohui Ruan, Suning Li, Yuan Yuan, Heping Tan
Summary: This article explores the impact of periodicity on the optical performance, electromagnetic response, and coupling in all-dielectric metasurfaces, highlighting the role of electromagnetic coupling between array nanoparticles. The study provides insights for potential applications in lasers, reflectors, absorbers, detectors, and other fields, offering a theoretical basis for designing specific performance devices by adjusting the metasurface size related to periodicity.
RESULTS IN PHYSICS
(2021)
Article
Astronomy & Astrophysics
L. Morrison, K. Hadynska-Klek, Zs. Podolyak, L. P. Gaffney, M. Zieli, B. A. Brown, H. Grawe, P. D. Stevenson, T. Berry, A. Boukhari, M. Brunet, R. Canavan, R. Catherall, J. Cederkaell, S. J. Colosimo, J. G. Cubiss, H. De Witte, D. T. Doherty, Ch. Fransen, G. Georgiev, E. Giannopoulos, M. Gorska, H. Hess, L. Kaya, T. Kroell, N. Lalovic, B. Marsh, Y. Martinez Palenzuela, G. O'Neill, J. Pakarinen, J. P. Ramos, P. Reiter, J. A. Rodriguez, D. Rosiak, S. Rothe, M. Rudigier, M. Siciliano, E. C. Simpson, J. Snall, P. Spagnoletti, S. Thiel, N. Warr, F. Wenander, R. Zidarova
Summary: The first low-energy Coulomb-excitation measurement of 206Hg, a radioactive semi-magic nucleus, was conducted at CERN's HIE-ISOLDE facility. The experiment observed two gamma rays from the depopulation of low-lying states in 206Hg. The results provide crucial information for understanding quadrupole and octupole collectivity near the heaviest double-magic nucleus 208Pb and can be used to test theoretical calculations relevant to astrophysical processes.
Article
Chemistry, Multidisciplinary
Zhiyu Wang, Ya-Lun Ho, Tun Cao, Takashi Yatsui, Jean-Jacques Delaunay
Summary: The study presents a one-dimensional nanostructure with rich Fano resonances induced by interference between a lossy background provided by a metal thin film and a discrete optical Tamm state. A drastic change in the Fano line shape can be achieved by controlling the metal thin film, leading from a narrowband perfect absorber to a narrowband perfect reflector.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Optics
Zhengkun Wang, Haiyang Sha, Ke Yang, Yong Zhu, Jie Zhang
Summary: In this study, the plasmonic response of self-assembled monolayer silver nanoparticles was comprehensively investigated using various computational and experimental techniques. The Fano resonance and SERS application were studied, and it was found that the higher-energy antibonding mode is not only from the antibonding dipole-dipole mode, but also from the antibonding quadrupole-quadrupole mode and hybridized magnetic mode. The effects of dimer gap and size were discussed in detail, and a two coupled oscillators model was used to illustrate the mechanism of the Fano resonance.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Physics, Multidisciplinary
Chunjian Zhang, Jiangyong Jia
Summary: In the hydrodynamic model description of heavy-ion collisions, the elliptic flow and triangular flow are found to be sensitive to the deformation of the colliding nuclei. Recent experiments confirmed the relation between flow and deformation in collisions involving Ru-96 and Zr-96 nuclei. It was discovered that measurements of flow in high-energy, heavy-ion collisions can provide valuable information about nuclear structure physics.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Applied
Lei Kang, Joshua A. Robinson, Douglas H. Werner
Summary: This study demonstrates the highly sensitive refractive index sensing of nano-engineered ultrathin 2D-metal films supporting infrared plasmons. The plasmonic resonances observed on nano-ribbons and nanoribbons exhibit strong refractive index sensitivity, which is of great significance for the development of nanoscale optical sensors.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Optics
Jian Chen, Guangwei Hu, Guangtao Cao, Yan Deng, Lei-ming Zhou, Zhengji Wen, Hui Yang, Guanhai Li, Xiaoshuang Chen
Summary: This study investigates the mode-mode interaction mechanism in photonic molecules composed of degenerate-mode cavity and single-mode cavity, revealing that direct coupling can lift mode degeneracy and lead to mode splitting. The introduction of direct coupling results in single Fano resonance and dual EIT-like effects in the double-cavity photonic molecule structure, with improved filtering bandwidth and peak transmission.
Article
Chemistry, Multidisciplinary
Yukuan Ma, Yulei Huang, Yuehong Zhu, Hao Zhou, Congliao Yan, Shutong Wang, Guoliang Deng, Shouhuan Zhou
Summary: We propose a heat-reconfigurable metasurface composed of the silicon-based gold grating. By regulating the Fano resonance using a bias voltage applied to laser-induced graphene (LIG), we can effectively shift the resonant dip of one mode while the other mode remains unchanged, thus controlling the coupling between the two resonant modes. This study presents a simple and efficient method for regulating Fano-like interference in the near-infrared band.
Article
Physics, Applied
Mengke Ren, Ran Li, Junqiao Wang, Chunzhen Fan, Pei Ding, Yan Li, Jinna He
Summary: This paper theoretically investigates the optical properties of a T-shaped dimer (TD) nanostructure and a TD with nanowire loads (TD/NL) nanostructure. By depositing the NLs around the TD, the optical property of the TD is significantly modified, resulting in a stronger electric field enhancement and Fano resonance. The Fano resonance in TD/NL nanostructure reveals a narrow spectral linewidth and high quality factor, which is advantageous for optical refractive index sensors with high sensitivity.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Linsen Zhou, Ryan Johnson, Terefe Habteyes, Hua Guo
JOURNAL OF CHEMICAL PHYSICS
(2017)
Article
Chemistry, Physical
Tefera E. Tesema, Christopher Annesley, Terefe G. Habteyes
JOURNAL OF PHYSICAL CHEMISTRY C
(2018)
Article
Nanoscience & Nanotechnology
Bijesh Kafle, Paul Gieri, Hamed Kookhaee, Tefera E. Tesema, Sharmin Haq, Alejandro Manjavacas, Terefe G. Habteyes
Article
Chemistry, Physical
Tefera E. Tesema, Bijesh Kafle, Terefe G. Habteyes
JOURNAL OF PHYSICAL CHEMISTRY C
(2019)
Article
Chemistry, Multidisciplinary
Chih-Feng Wang, Terefe G. Habteyes, Ting Shan Luk, John F. Klem, Igal Brener, Hou-Tong Chen, Oleg Mitrofanov
Article
Nanoscience & Nanotechnology
Sharmin Haq, Tefera E. Tesema, Bisweswar Patra, Eric Gomez, Terefe G. Habteyes
Article
Chemistry, Physical
Tefera E. Tesema, Hamed Kookhaee, Terefe G. Habteyes
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2020)
Article
Chemistry, Physical
Chih-Feng Wang, Bijesh Kafle, Tefera E. Tesema, Hamed Kookhaee, Terefe G. Habteyes
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Chemistry, Physical
Hamed Kookhaee, Tefera E. Tesema, Terefe G. Habteyes
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Chemistry, Physical
Tefera E. Tesema, Ross McFarland-Porter, Epherem Zerai, John Grey, Terefe G. Habteyes
Summary: This study reveals the self-assembly phenomena in polymer thin films, including the formation of polymer nanoparticles and their assembly patterns in a matrix. It also demonstrates that the structure and scale of polymer self-assembly can be controlled by adjusting the composition of the solution and the speed of spin-coating.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Bing Gao, Epherem A. Zerai, John K. Grey, Terefe G. Habteyes
Summary: We studied the physicochemical behavior of molecular photon emitters in plasmonic hot spots by comparing the scattering signal of three chromophores, MB, AzA, and TBO, in a vacuum and air. The adsorbates are found to be stable in a vacuum, but undergo N-demethylation when excited in ambient conditions. This photochemical transformation is preceded by fluorescence quenching and involves intersystem crossing, energy transfer, and singlet oxygen generation. These findings are important for understanding molecular polaritons in plasmonic nanocavities.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Bisweswar Patra, Bijesh Kafle, Terefe. G. G. Habteyes
Summary: The interaction between nanocavity plasmons and molecular vibrations can be tailored for sensing and photocatalytic applications. In this study, laser-plasmon detuning dependent plasmon resonance linewidth broadening is observed, indicating energy transfer from the plasmon field to vibrational modes. The experimental results suggest that molecular optomechanics coupling can create hybrid properties based on interactions between molecular oscillators and nanocavity electromagnetic optical modes.
Article
Chemistry, Multidisciplinary
Terefe G. Habteyes, Eric R. Westphal, Kenneth M. Plackowski, Paul G. Kotula, Melissa L. Meyerson, Stephanie L. White, W. Cody Corbin, Koushik Ghosh, John K. Grey
Summary: Carbon dots prepared from citric acid and urea can self-assemble into nanowire structures. The self-assembly process and the interplay between different chemical constituents at the nanoscale were revealed using scattering-type scanning near-field optical microscopy. Residual citrate was found to promote the tautomerization of melamine molecules, forming long-range and highly directional hydrogen-bonding networks in the nanowires. This self-assembly mechanism can be utilized to fabricate functional structures on arbitrary surfaces.
Article
Chemistry, Physical
Terefe G. Habteyes
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Engineering, Electrical & Electronic
Chih-Feng Wang, Sadhvikas Addamane, Bisweswar Patra, Claudia Rivera Lebron, Sharmin Haq, Ganesh Balakrishnan, Kevin J. Malloy, Terefe G. Habteyes
ACS APPLIED ELECTRONIC MATERIALS
(2019)
