Article
Physics, Multidisciplinary
Mengchao Guo, Xiaokun Wang, Haiyan Zhuang, Dongming Tang, Baoshan Zhang, Yi Yang
Summary: In this paper, high-contrast gratings based spoof surface plasmon polaritons (HCG-based SSPPs) are used to enhance the bandwidth of all-dielectric metamaterial absorbers (ADMMAs). A carbon black composite is used to design a broadband ADMMA, which consists of a cylinder array structure. Simulation results show that a broadband absorption from 6.1 GHz to 18 GHz is achieved with three absorption peaks under a total thickness of 3.9 mm. The first peak is attributed to HCG-based SSPPs, while the other two are attributed to diffraction effects. The improved impedance matching characteristic in a wide band also contributes to the enhancement. Experimental results roughly agree with the simulations. Moreover, the designed structure is not a standard HCG, indicating the potential universality of HCG-based SSPPs in ADMMAs. It is believed that this work will stimulate further research on the applications of HCG-based SSPPs in ADMMAs.
Article
Optics
Qiang Zhang, Zhenwei Xie, Peng Shi, Hui Yang, Hairong He, Luping Du, Xiaocong Yuan
Summary: This article investigates the dynamic modulation of optical skyrmions by changing the field symmetry and adding chirality. The study reveals that field symmetry controls the transformation between skyrmions and merons, while material chirality regulates the degree of twist in the fields and spins, and governs the skyrmionic transition. The enantioselective twist of skyrmions and merons arises from the chirality-induced splitting of the hyperboloid in momentum space. The research enriches the portfolio of optical quasiparticles and deepens our understanding of light-matter interaction, paving the way for applications such as chiral sensing, optical tweezing, and topological phase transitions in quantum matter.
PHOTONICS RESEARCH
(2022)
Article
Optics
J. P. Trevino, V. Coello, A. James-Najera, S. Chavez-Cerda, J. E. Gomez-Correa
Summary: This work reports the observation of 2D longitudinal aberrated wavefields by mapping the intensity distributions of surface plasmon polaritons (SPPs) propagating on a metal/air interface. The SPP beam orientation can be adjusted to mimic aberrated beams, showing Seidel terms such as defocus, spherical, coma, and tilt aberrations. This approach provides a visual and rapid examination of the longitudinal evolution of aberrated beams compared to more complicated post-processing reconstructions.
PHOTONICS RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Xiaoyan Shi, Wu Yang, Huaizhong Xing, Xiaoshuang Chen
Summary: Plasmonic power splitters based on hybrid plasmonic waveguides are proposed and analyzed, where the propagation behaviors of Surface Plasmon Polaritons (SPPs) in the waveguides are numerically simulated. The design of different power splitters is achieved by understanding the intensity distributions and multimode interference of SPPs supermodes in the waveguides.
APPLIED SCIENCES-BASEL
(2021)
Article
Optics
Wanqi Zhao, Yu Cheng, Ming Chen, Shijie Deng, Houquan Liu, Chuanxin Teng, Hongyan Yang, Hongchang Deng, Libo Yuan
Summary: This paper proposes an accompanying waveguide coupling structure of micro/nano fibers and studies the excitation and coupling characteristics of surface plasmon polaritons (SPPs) through numerical simulations. The optimal coupling enhancement configuration is obtained, and structures resembling interferometric devices can be designed, providing new insights for high-performance miniaturized devices.
Article
Materials Science, Multidisciplinary
Elise Bailly, Kevin Chevrier, Camilo Perez De La Vega, Jean-Paul Hugonin, Yannick De Wilde, Valentina Krachmalnicoff, Benjamin Vest, Jean-Jacques Greffet
Summary: This article presents a technique to obtain the permittivity of fluorophores, such as dye molecules, from fluorescence measurements. The Brendel-Bormann model is found to accurately fit the emission spectra.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Physics, Multidisciplinary
Jianfei Han, Shu Zhen, Weihua Wang, Kui Han, Haipeng Li, Lei Zhao, Xiaopeng Shen
Summary: This paper introduces a broadband and highly efficient plasmonic circulator, which has been verified through simulations and experiments to have low insertion loss and high isolation in the frequency range. Additionally, an equivalent circuit model has been proposed to explain its operating mechanism.
Article
Optics
Yiyuan Xie, Yuanyuan Yin, Tingting Song, Yunchao Zhu, Junxiong Chai, Bocheng Liu, Yichen Ye
Summary: A novel optical logic device based on the plasmon-induced transparency effect is proposed, which can achieve six logic operations simultaneously by monitoring different wavelengths. The performance of the device is analyzed by theoretical modeling and numerical simulation, and the influence of structural parameters on device performance is discussed.
Article
Optics
Ali Tehranian, Mehdi Ahmadi-Boroujeni, Afshin Abbaszadeh
Summary: In this paper, a novel waveguide structure capable of supporting highly confined spoof surface plasmonic (SSP) mode with lower propagation loss is proposed. By analyzing the 2D and 3D structures of the waveguide, it is found that a subwavelength cross-sectional size waveguiding structure with high field confinement and low propagation loss can be achieved if the gap region is properly designed.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
Huali Zhu, Yong Zhang, Longfang Ye, Zhang Dang, Ruimin Xu, Bo Yan
Summary: This study demonstrates a high-efficiency rectangular waveguide-to-spoof surface plasmon polaritons transmission line transition operating within the terahertz frequency range. The use of a dipole antenna improves transmission performance and shows potential applications in the terahertz range.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Nanoscience & Nanotechnology
Ayanna Shorter, Md Golam Rabbani Chowdhury, Sangeeta Rout, Mikhail A. A. Noginov
Summary: We studied the reflection spectra of dye-doped and undoped polymers on Ag and Au substrates and found anomalous dips in the UV range. The dips observed on Ag substrates were close to singularities in the refractive indexes of SPPs at the Ag-polymer interface. The dips observed on Au substrates were more pronounced, broader, and shifted to shorter wavelengths, and their spectral positions had large standard deviations compared to those on Ag substrates.
Article
Chemistry, Multidisciplinary
Zhaolong Cao, Jianfa Chen, Shaozhi Deng, Huanjun Chen
Summary: Understanding the physical origins of chiroptical responses in artificial optically active media is crucial for developing high-performance circular dichroism spectroscopic techniques. In this study, a biorthogonal approach based on temporal coupled-mode theory is presented to explain the underlying physics of chiral metasurfaces. It is found that the intrinsic chirality of coupled chiral nanocavities arises from the asymmetric coupling between interlayer cross-polarized resonant modes and coherent interference between doubly degenerate states.
Article
Optics
Yulu Qin, Boyu Ji, Xiaowei Song, Jingquan Lin
Summary: The study achieved ultrafast spatiotemporal control of the launch direction of SPP through a plasmonic nano directional coupler; experimental results showed that the extinction ratio of the SPP directional coupler can be optimized by adjusting the amplitude and time delay of the incident light pulses; by adjusting the polarization state of the excitation light, the launch direction of the SPP field can be switched on the femtosecond timescale.
PHOTONICS RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Olga V. Borovkova, Saveliy V. Lutsenko, Mikhail A. Kozhaev, Andrey N. Kalish, Vladimir I. Belotelov
Summary: A method of spectrally selective detection of short spin waves using the transverse magneto-optical intensity effect in a magnetoplasmonic nanostructure is proposed. The method is based on analyzing the modulation of the sample magnetization caused by the spin wave and the related spatial symmetry breaking in the magnetic layer. The study reveals that the magnitude of the magneto-optical effect varies periodically depending on the spatial shift of the spin wave with respect to the plasmonic grating, allowing for the detection of spin waves of a certain wavelength in a nanostructure.
Article
Chemistry, Multidisciplinary
Thanos Ioannidis, Tatjana Gric, Edik Rafailov
Summary: The study investigates the dispersion properties of SPPs propagating at the interfaces of composite media, showing that material conductivity, filling ratio of nanoparticles, and dielectric properties significantly affect the characteristics of the SPPs. The research provides insight into the behavior of SPPs in complex conductivity plane and offers options to engineer the fundamental features of SPPs at the boundaries of composite media.
APPLIED SCIENCES-BASEL
(2021)
Article
Optics
Sai Kanth Dacha, Wenqi Zhu, Amit Agrawal, Kenneth J. Ritter, Thomas E. Murphy
Summary: We experimentally demonstrate a unique power-dependent rotation effect in the vectorial mode superposition of two spin-orbit coupled orbital angular momentum (OAM) modes, which co-propagate in the Kerr nonlinear regime in a hollow ring-core optical fiber. The added spatial dimension produces a visually observable rotation of the spatial pattern emerging from the fiber when imaged through a linear polarizer.
Article
Chemistry, Inorganic & Nuclear
Eaman T. Karim, Veronika Szalai, Lonnie Cumberland, Alline F. Myers, Shozo Takagi, Stanislav A. Frukhtbeyn, Ileana Pazos, Laurence C. Chow
Summary: In this study, carbonate-containing hydroxyapatite (CHA) was synthesized using a self-hardening calcium phosphate cement (CPC) and its paramagnetic properties following gamma-irradiation were investigated. The results suggest that CHA synthesized via CPC cement is a promising substrate for electron paramagnetic resonance (EPR)-based dosimetry applications.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Babak Nikoobakht, Jonathan Lee, Amit Agrawal, Scott Wight, Michael Shur
Summary: Nanostructured semiconductors have the potential to miniaturize electrically driven semiconductor lasers. This study analyzes lateral ZnO fins as an optical gain medium and an optical resonator, revealing their excellent performance in electron-hole pair collection efficiency and resonance mode formation.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Review
Instruments & Instrumentation
Nandita Abhyankar, Amit Agrawal, Jason Campbell, Thorsten Maly, Pragya Shrestha, Veronika Szalai
Summary: This article introduces the application and challenges of microresonators in EPR spectroscopy, and provides insights into resonator sensitivity analysis, design and fabrication of microresonators, as well as the requirements and challenges of incorporating microresonators into EPR spectrometer systems.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2022)
Article
Chemistry, Multidisciplinary
Ruixuan Yu, Pengcheng Huo, Mingze Liu, Wenqi Zhu, Amit Agrawal, Yan-qing Lu, Ting Xu
Summary: The electron vortex beam (EVB) carrying quantized orbital angular momentum (OAM) is important in fundamental research, but its wide applications in electron microscopy have been hindered by the dependence of the transverse intensity profile radius on the topological charge of the OAM. Inspired by perfect vortex in optics, a perfect electron vortex beam (PEVB) is demonstrated, which eliminates the constraint between beam size and OAM. Nanoscale holograms are designed to generate PEVBs with different OAM quanta but similar beam sizes, and the beam size can be easily controlled by modifying hologram design parameters. The generation of PEVB with customizable beam size independent of OAM enables various in situ applications of free electrons OAM in electron microscopy.
Article
Multidisciplinary Sciences
Verna Van, Janae B. Brown, Corin R. O'Shea, Hannah Rosenbach, Ijaz Mohamed, Nna-Emeka Ejimogu, Toan S. Bui, Veronika A. Szalai, Kelly N. Chacon, Ingrid Span, Fangliang Zhang, Aaron T. Smith
Summary: ATE1 is an enzyme that catalyzes post-translational modification in eukaryotes, regulating protein stability and half-life. This study reveals the presence of an [Fe-S] cluster in ATE1, which is linked to its enzymatic activity and yeast stress response. This finding provides new insights into the regulatory mechanism of ATE1.
NATURE COMMUNICATIONS
(2023)
Article
Optics
L. Chen, P. Huo, J. Song, Z. Wang, T. Xu, W. Zhu, A. Agrawal
Summary: Research has found that the polarization state of light is crucial in revealing intrinsic chiral or anisotropic optical response in various material systems, and is important for applications requiring complex polarization encoding. By leveraging the nanoscale multidimensional control of light offered by metasurfaces, we can engineer the temporal evolution of the instantaneous polarization state of a femtosecond pulse through parallel manipulation of its constituent spectral components across an ultrawide bandwidth. We expect this control over the synthesis of complex vectorially shaped pulses to further elucidate ultrafast chiral light-matter interactions.
Article
Chemistry, Multidisciplinary
Yuming Zhao, Chuan Xiao, Elieser Mejia, Aditya Garg, Junyeob Song, Amit Agrawal, Wei Zhou
Summary: Metallic nanostructures can enhance luminescence processes and be used for various applications. However, the dependence of nanoplasmonic metal luminescence on voltage modulation has not been thoroughly studied. In this research, we investigate dynamic voltage-modulated nanoplasmonic metal luminescence using nanolaminate nanooptoelectrode arrays. Our experiments show that the luminescence exhibits negative voltage modulation slope in physiological solutions. We also develop a model to understand the relationship between voltage polarization, ionic strength, and luminescence modulation. This work has implications for optical voltage biosensing, signal transduction, and electrochemical monitoring.
Article
Chemistry, Multidisciplinary
Jyoti Sardana, Shital Devinder, Wenqi Zhu, Amit Agrawal, Joby Joseph
Summary: This study proposes an ultracompact, highly stable interferometer based on a single-layer dielectric metasurface for common path off-axis digital holography, enabling quantitative phase imaging. The system captures image plane holograms in a single shot and provides quantitative phase information on the test samples for extraction of their physical properties. With advantages of stability and cost-effectiveness, this metasurface-based method establishes a miniaturized QPI system for reliable and economic point-of-care devices, live cell imaging, and more.
Article
Optics
Okan Koksal, Junyeob Song, Zi Wang, Lu Chen, Wenqi Zhu, Amit Agrawal
Summary: This study introduces a method to fabricate anti-reflective metasurfaces using a single nanolithography step after deposition of multiple dielectrics onto a substrate. Compared to conventional equivalents, anti-reflective metasurfaces offer better transmission efficiencies and reduce spurious diffraction and higher-order scattering. The results show improved focusing efficiencies for both low and high numerical apertures.
LASER & PHOTONICS REVIEWS
(2023)
Article
Quantum Science & Technology
T-W Hsu, W. Zhu, T. Thiele, M. O. Brown, S. B. Papp, A. Agrawal, C. A. Regal
Summary: In this study, we demonstrate the use of efficient dielectric metasurface lens for trapping and imaging single neutral atoms. We compare the performance of the metasurface lens with numerical computations and predict its potential for future applications in atom trapping and quantum information experiments.
Article
Chemistry, Physical
Sergey Yu. Ketkov, Sheng-Yuan Tzeng, Elena A. Rychagova, Anton N. Lukoyanov, Wen-Bih Tzeng
Summary: Metallocenes, including methylcobaltocene, play important roles in various fields of chemistry. The ionization energy and vibrational structure of (Cp ')(Cp)Co can be influenced by introducing methyl substituents. The mass-analyzed threshold ionization spectrum and DFT calculations provide accurate information about the properties and transformations of (Cp ')(Cp)Co.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Review
Chemistry, Physical
Qifeng Mu, Jian Hu
Summary: Polymer mechanochemistry has experienced a renaissance due to the rapid development of mechanophores and principles governing mechanochemical transduction or material strengthening. It has not only provided fundamental guidelines for converting mechanical energy into chemical output, but also found applications in engineering and smart devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Da Hye Yang, Francesco Ricci, Fredrik L. Nordstrom, Na Li
Summary: Through systematic evaluation of the oiling-out behavior of procaine, we identified both stable and metastable liquid-liquid phase separation, and established phase diagrams to assist in rational selection of crystallization strategies.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Vikki Anand Varma, Simmie Jaglan, Mohd Yasir Khan, Sujin B. Babu
Summary: Designing engineering structures like nanocages, shells, and containers through self-assembly of colloids is a challenging problem. This work proposes a simple model for the subunit, which leads to the formation of monodispersed spherical cages or containers. The model with only one control parameter can be used to design cages with the desired radius.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Hainan Jiang, Yaolong He, Xiaolin Li, Zhiyao Jin, Huijie Yu, Dawei Li
Summary: The cycling lifespan and coulombic efficiency of lithium-ion batteries are crucial for high C-rate applications. The Li-ion concentration plays a crucial role in determining the mechanical integrity and structural stability of electrodes. This study focuses on graphite as the working electrode and establishes an experimental system to investigate the mechanical properties of composite graphite electrode at different C-rates. Considering the effect of Li-ion concentration in stress analysis is found to be significant.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Zhiye Wang, Yunchuan Li, Mingjun Sun
Summary: This study investigates the influence of intramolecular pi-pi interactions on the electronic transport capabilities of molecules. By designing and analyzing three pi-conjugated molecules, the researchers observe that different pi-conjugated structures have varying effects on electron transport. The findings provide a theoretical foundation for designing single-molecule electronic devices with multiple electron channels based on intramolecular pi-pi interactions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Yuandong Xu, Haoyang Feng, Chaoyang Dong, Yuqing Yang, Meng Zhou, Yajun Wei, Hui Guo, Yaqing Wei, Jishan Su, Yingying Ben, Xia Zhang
Summary: Hollow MoS2 cubes and spheres were successfully synthesized using a one-step hydrothermal method with the hard template method. The hollow MoS2 cubes exhibited higher specific capacitance and energy density compared to the hollow MoS2 spheres. The symmetrical supercapacitors assembled with these hollow structures showed good performance and high capacity retention after multiple cycles. These findings suggest that controlling the pore structure and surface characteristics of MoS2 is crucial for enhancing its electrochemical properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Ainhoa Oliden-Sanchez, Rebeca Sola-Llano, Joaquin Perez-Pariente, Luis Gomez-Hortiguela, Virginia Martinez-Martinez
Summary: The combination of photoactive molecules and inorganic structures is important for the development of advanced materials in optics. In this study, bulky dyes were successfully encapsulated in a zeolitic framework, resulting in emission throughout the visible spectrum.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Miaomiao Zhang, Cunyuan Pei, Qiqi Xiang, Lintao Liu, Zhongxu Dai, Huijuan Ma, Shibing Ni
Summary: The design of a solid electrolyte interphase (SEI) plays a crucial role in improving the electrochemical performance of anode materials. In this study, lithium difluoro(oxalate)borate (LiDFOB) is used as an electrolyte additive to form a protective SEI film on Li3VO4 (LVO) anodes. The addition of LiDFOB results in a dense, uniform, stable, and LiF-richer SEI, which enhances the Li-ion storage kinetics. The generated SEI also prevents further decomposition of the electrolyte and maintains the morphology of LVO anodes during charge/discharge processes. This work demonstrates the effectiveness of LiDFOB as a multi-functional additive for LiPF6 electrolytes and provides insights into SEI construction for high-performance LVO anodes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
B. V. Andryushechkin, T. V. Pavlova, V. M. Shevlyuga
Summary: The atomic structure of the Ag(111)-p(4 x 4)-O phase was reexamined and two phases with the same periodicity were discovered. It was demonstrated that the accepted Ag6 model is incompatible with high-resolution oxygen-sensitive STM images.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
S. L. Romo-Avila, D. Marquez-Ruiz, R. A. Guirado-Lopez
Summary: In this study, we used density functional theory (DFT) calculations to investigate the interaction between model graphene oxide (GO) nanostructures and chlorine monoxide ClO. We aimed to understand the role of this highly oxidizing species in breaking C-C bonds and forming significant holes on GO sheets. Our results showed that C-C bonds in a single graphene oxide sheet can be broken through a simple mechanism involving the dissociation of two chemically attached ClO molecules. The formation of carbonyl groups and holes on the GO surface was also observed. This study provides important insights into the degradation of carbon nanotubes and the stability of GO during the myeloperoxidase (MPO) catalytic cycle.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Alberto Garcia-Fernandez, Birgit Kammlander, Stefania Riva, Hakan Rensmo, Ute B. Cappel
Summary: In this study, the X-ray stability of five different lead halide perovskite compositions (MAPbI3, MAPbCl3, MAPbBr3, FAPbBr3, CsPbBr3) was investigated using photoelectron spectroscopy. Different degradation mechanisms and resistance to X-ray were observed depending on the crystal composition. Overall, perovskite compositions based on the MA+ cation were found to be less stable than those based on FA+ or Cs+. Metallic lead formation was most easily observed in the chloride perovskite, followed by bromide, and very little in MAPbI3. Multiple degradation processes were identified for the bromide compositions, including ion migration, formation of volatile and solid products, as well as metallic lead. CsBr was formed as a solid degradation product on the surface of CsPbBr3.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Timofei Rostilov, Vadim Ziborov, Alexander Dolgoborodov, Mikhail Kuskov
Summary: The shock-loading behavior of nanomaterials is investigated in this study. It is found that shock compaction waves exhibit a distinct two-step structure, with the formation of faster precursor waves that travel ahead of the main compaction waves. The complexity of the shock Hugoniot curve of the tested nanomaterial is described, and the effect of initial porosity on the compressed states is demonstrated.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Sergey S. Nikitin, Alexander D. Koryakov, Elizaveta A. Antipinskaya, Alexey A. Markov, Mikhail V. Patrakeev
Summary: The stability of La1/3Sr2/3Fe1-xMnxO3-delta, a perovskite-type oxide, under reducing conditions is dependent on the manganese content. Increasing the manganese content leads to a decrease in stability. The behavior of iron and manganese in the oxide shows distinct differences, which can be attributed to the difference in the enthalpy of oxidation reactions. Additionally, the change in the La/Sr ratio affects the concentration of iron and manganese ions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Mosayeb Naseri, Shirin Amirian, Mehrdad Faraji, Mohammad Abdur Rashid, Maicon Pierre Lourenco, Venkataraman Thangadurai, D. R. Salahub
Summary: Inspired by the successful transfer of freestanding ultrathin films of SrTiO3 and BiFeO3, this study assessed the structural stability and investigated the electronic, optical, and thermoelectric properties of a group of two-dimensional perovskite-type materials called perovskenes. The findings revealed that these materials are wide bandgap semiconductors with potential application in UV shielding. Moreover, they exhibit better electrical and thermal conductivity at high temperatures, enabling efficient power generation in thermoelectric devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)