Article
Chemistry, Multidisciplinary
Zhaogang Dong, Sergey Gorelik, Ramon Paniagua-Dominguez, Johnathan Yik, Jinfa Ho, Febiana Tjiptoharsono, Emmanuel Lassalle, Soroosh Daqiqeh Rezaei, Darren C. J. Neo, Ping Bai, Arseniy Kuznetsov, Joel K. W. Yang
Summary: The paper presents a method to achieve optical antenna effects using Si mixed antenna arrays, demonstrating significant enhancements in absorption, emission rates, and directionality, applicable to biological and chemical fields.
Article
Nanoscience & Nanotechnology
Ilka Vincon, Fedja J. Wendisch, Daniele De Gregorio, Stefanie D. Pritzl, Quinten A. Akkerman, Haoran Ren, Leonardo de S. Menezes, Stefan A. Maier, Jochen Feldmann
Summary: In this study, we developed a hybrid system consisting of a dielectric chiral nanoantenna array coated with perovskite nanocrystals. By tuning the thickness of the nanocrystal film and utilizing the properties of the chiral surface, we successfully enhanced the photoluminescence emission of the nanocrystals.
Article
Chemistry, Multidisciplinary
Dengchao Huang, Shilin Liu, Kang Yang
Summary: In this study, a hybrid nanoantenna composed of a dimer of core-dual shell nanoparticles called the metal-dielectric-metal (MDM) structure is proposed. The hybrid dimer shows unidirectional forward scattering and possesses high radiation directivity and low-loss features, which results in a significant improvement in radiation efficiency compared to pure dielectric or metallic dimers.
Article
Optics
Guillermo Serrera, Javier Gonzalez-Colsa, Vincenzo Giannini, Jose M. Saiz, Pablo Albella
Summary: This work presents a numerical proof of concept for a novel approach to chiral sensing using the directional emission of Surface Plasmon Polaritons (SPPs) on a metasurface. By measuring the polarization-dependent SPP differential emission, the chiroptical properties of molecules can be detected. The proposed method shows potential for faster, real-time measurements.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2022)
Article
Chemistry, Physical
Saeed Fakhte, Ladislau Matekovits
Summary: A technique is introduced to significantly decrease the resonant frequency of higher order modes in a uniaxial anisotropic rectangular dielectric resonator nanoantenna without affecting the resonant frequency of the fundamental mode. This method allows for adjusting the frequency distance between high-order and fundamental modes, and its performance is numerically validated for different dielectric tensor contrast values.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Zhenghe Zhang, Chaojie Xu, Chen Liu, Man Lang, Yuehao Zhang, Minghao Li, Wanli Lu, Zefeng Chen, Chinhua Wang, Shaojun Wang, Xiaofeng Li
Summary: In this study, we enhance the emission of quasi-bound states in the continuum (quasi-BIC) from a resonant monocrystalline silicon (c-Si) metasurface through lattice and multipolar engineering. We identify dual-BICs originating from electric quadrupoles (EQ) and out-of-plane magnetic dipoles, with EQ quasi-BICs exhibiting concentrated near-fields near the c-Si nanodisks. The enhanced radiative local density of states of EQ quasi-BICs overlaps spatially with the emitters, promoting efficient out-coupling.
Article
Chemistry, Multidisciplinary
Marko M. Petric, Malte Kremser, Matteo Barbone, Anna Nolinder, Anna Lyamkina, Andreas Stier, Michael Kaniber, Kai Mueller, Jonathan J. Finley
Summary: The combination of nanoplasmonic systems and optically active two-dimensional materials allows for the exploration and control of light-matter interactions at extreme subwavelength length scales. This study investigates the characteristics of a MoSe2 monolayer on individual gold dipole nanoantennas at room and cryogenic temperatures. The results reveal tuning of the dipolar resonance relative to the exciton and a coupling constant between exciton and plasmon, demonstrating active control of the coupling by varying the excitation light polarization.
Article
Physics, Applied
Fei Xie, Mengxin Ren, Wei Wu, Wei Cai, Jingjun Xu
Summary: By using the 90 degrees-crossing point of the optical rotation spectral curve as the sensing signal, the figure of merit (FoM) can be greatly improved, enabling convenient and high-precision tracking of spectral shifts from raw data. This approach provides a way for constructing metasurface refractive index sensors.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Anton Dyshlyuk, Alexey Proskurin, Andrey A. Bogdanov, Oleg B. Vitrik
Summary: This study investigated the expression for the amplitude of surface plasmon polaritons (SPPs) excited by an arbitrary 3D current distribution placed near a metal interface. The developed method simplifies the SPP excitation problem to the summation of emitters based on a technique commonly used in waveguide theory, with analytical calculations in good agreement with full-wave numerical simulations.
Article
Chemistry, Physical
Mohammadhasan Dinpajooh, Dmitry V. Matyushov
Summary: The interface dielectric constant is used to measure the polar response of water near a spherical solute. It is fundamentally different from the bulk dielectric constant and is affected by the interfacial structure within two hydration layers. Molecular dynamics simulations are employed to calculate the interface dielectric constant by correlating the dipole moment of the interfacial layer with the electrostatics of the medium. Various protocols are used to calculate the dielectric constants, all of which yield values significantly lower than the bulk constant when water interfaces with a nonpolar solute. Corrections imposed on the fluctuation relations by protocols using periodic boundary conditions and Ewald sums are found to be negligible in typical simulation protocols. (c) 2023 Elsevier B.V. All rights reserved.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Optics
Hongze Gao, Zicheng Wang, Guochen Wang, Wei Gao, She Li, Zhuo Wang, Bo Cheng, Kaidi Tian
Summary: The study of chiral fibers for optical fiber communication and sensing is important due to the lack of cross coupling effects in circularly polarized light. However, the fabrication requirements for chiral fibers result in higher costs. In this research, the authors successfully demonstrated the fabrication method of dielectric chiral fiber and showcased its low-cost and high-performance characteristics.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Chemistry, Multidisciplinary
Maxim Rakhlin, Sergey Sorokin, Dmitrii Kazanov, Irina Sedova, Tatiana Shubina, Sergey Ivanov, Vladimir Mikhailovskii, Alexey Toropov
Summary: This study introduces single photon emitters for the green-yellow spectral range, utilizing a CdSe/ZnSe quantum dot inside a semiconductor tapered nanocolumn acting as a nanoantenna. Despite the presence of multiple optical modes, the nanoantenna efficiently collects and outputs the quantum dot radiation. Arrays of such emitters, fabricated using focused ion beam etching from a II-VI/III-V heterostructure grown via molecular beam epitaxy, demonstrate promising potential for secure free space optical communication lines with an average count rate exceeding 5 MHz and a low second-order correlation function at 220 K.
Article
Optics
Ofer Neufeld, Omri Wengrowicz, Or Peleg, Angel Rubio, Oren Cohen
Summary: Characterizing chiral is crucial in the pharmaceutical industry and the study of dynamic chemical and biological systems. However, the increasing complexity and size of molecular structures have posed challenges to this task. In this study, the sensitivity of high harmonic generation (HHG) to the chirality of molecules with varying numbers of active chiral centers is explored theoretically. It is found that HHG driven by hi-chromatic non-collinear lasers can serve as a sensitive probe for the stereo-configuration of chiral molecules. Through calculations and reconstruction algorithms based on classical and deep learning, the composition of unknown mixtures of stereoisomers can be accurately determined by a single-shot HHG measurement. This work demonstrates the potential of combining nonlinear optics and machine learning for ultra-sensitive sensing in chiral systems.
Article
Chemistry, Multidisciplinary
Taeko Matsukata, F. Javier Garcia de Abajo, Takumi Sannomiya
Summary: Research on exciting nanospheres to generate circularly polarized light emission along arbitrary directions further demonstrates the feasibility of using free-electron-induced light emission in applications such as quantum communication and encryption.
Article
Chemistry, Multidisciplinary
Maxim Rakhlin, Grigorii Klimko, Sergey Sorokin, Marina Kulagina, Yurii Zadiranov, Dmitrii Kazanov, Tatiana Shubina, Sergey Ivanov, Alexey Toropov
Summary: This paper reports on single-photon emitters designed for the telecommunication O-band. These emitters consist of InAs/(In)GaAs quantum dots with asymmetric barriers placed inside semiconductor tapered nanocolumns acting as photonic nanoantennas. The implemented design allows for a shift in the quantum dot radiation wavelength towards the O-band, and the nanoantennas collect and effectively output the radiation. With non-resonant optical pumping, the average count rate of emitted single photons exceeds 10 MHz, with a second-order correlation function g((2))(0) = 0.18 at 8 K.
Article
Chemistry, Multidisciplinary
Jingang Li, Pavana Siddhartha Kollipara, Ya Liu, Kan Yao, Yaoran Liu, Yuebing Zheng
Summary: Motors that can convert different forms of energy into mechanical work play a crucial role in the development of human societies. The miniaturization of motors to the nanoscale is challenging due to the strong Brownian motion in liquid environments. In this study, we develop light-driven optothermocapillary nanomotors that can operate on solid substrates, effectively suppressing the interference of Brownian motion. Our nanomotors demonstrate robust orbital rotation and have the capability to power functional devices at the nanoscale.
Article
Chemistry, Multidisciplinary
Hongru Ding, Zhihan Chen, Carolina Ponce, Yuebing Zheng
Summary: Due to their contactless and fuel-free operation, optical rotation techniques have great potential in various fields such as cellular biology, 3D imaging, and micro/nanorobotics. However, the complexity of optics, high power requirements, and limitations in object applicability hinder their broader use. This Feature Article focuses on a new class of optical rotation techniques called optothermal rotation, which utilizes light-mediated thermal phenomena to enable versatile and simpler rotary control of objects with lower power. The article provides an overview of the fundamental thermal phenomena and concepts involved in optothermal rotation and categorizes the techniques based on their rotation modes and thermal phenomena. The potential applications of optothermal manipulation techniques in areas like single-cell mechanics, 3D bio-imaging, and micro/nanomotors are also discussed, along with insights on operating guidelines, challenges, and future directions.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Pavana Siddhartha Kollipara, Zhihan Chen, Yuebing Zheng
Summary: Optothermal manipulation is a versatile technique that combines optical and thermal forces to control micro-/nanoparticles and biological entities. It overcomes the limitations of traditional optical tweezers and has a wide range of applications in biology, nanotechnology, and robotics. However, there are current challenges in experimental and modeling aspects, which need to be addressed for further advancements in this field.
Article
Chemistry, Multidisciplinary
Hongru Ding, Pavana Siddhartha Kollipara, Kan Yao, Yiran Chang, Daniel J. Dickinson, Yuebing Zheng
Summary: Optical tweezers offer contact-free manipulation of small objects, but require sophisticated imaging and feedback systems for controlled motion. We develop an optothermal platform that enables multimodal manipulation of micro/nanoparticles along various surfaces, including both synthesized particles and biological cells. With this platform, we can achieve localized control of biological functions on rough surfaces of live worms and their embryos. This multimodal optothermal platform will be a powerful tool in life sciences, nanotechnology, and colloidal sciences.
Article
Chemistry, Physical
Jie Fang, Suichu Huang, Kan Yao, Tianyi Zhang, Mauricio Terrones, Wentao Huang, Yunlu Pan, Yuebing Zheng
Summary: Tunable exciton-photon couplings have been demonstrated in monolayer TMDs, showing strong bright-exciton-photon couplings and revealing the novel interactions between bright and dark exciton-photon hybrids in a single optical cavity. The waveguide mode can be tuned in wavelengths by controlling the spacer thickness, and the relative contribution from the antenna mode coupled with dark excitons can be dynamically enlarged by increasing the excitation angle. This study opens new possibilities in tunable QED and provides insights into the coexistence of bright and dark exciton-photon couplings.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Yaoran Liu, Rohit Unni, Xin Lou, Mingcheng Yang, Yuebing Zheng
Summary: This article introduces a high-resolution 3D imaging and classification technique based on optical microscopy coupled with optothermal rotation. It is applicable to any suspended organism in clinical samples, enabling contact-free and biocompatible 3D imaging.
Article
Nanoscience & Nanotechnology
Anand Swain, Zhihan Chen, Yaoran Liu, Zilong Wu, Yuebing Zheng
Summary: Thermal-tape-transfer printing enables the fabrication of large-scale and homogeneous moire chiral metamaterials (MCMs) with arbitrary twist angles and tunable optical chirality. This opens doors to various biological, photonic, and optoelectronic applications.
Review
Chemistry, Multidisciplinary
Yaoran Liu, Zilong Wu, Daniel W. Armstrong, Herman Wolosker, Yuebing Zheng
Summary: The chirality of small metabolic molecules plays an important role in physiological processes and health assessment. Abnormal ratios of enantiomers in biofluids and tissues are associated with various diseases. Chiral small molecules show great potential as biomarkers for disease diagnosis, prognosis, drug-effect monitoring, pharmacodynamics, and personalized medicine. However, analyzing small chiral molecules in clinical settings remains challenging due to their diversity and low concentration levels.
NATURE REVIEWS CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Zhihan Chen, Hongru Ding, Pavana Siddhartha Kollipara, Jingang Li, Yuebing Zheng
Summary: Researchers propose a novel optical feedback control system that can mimic collective motion observed in living objects. This system allows for experimental investigation of velocity alignment in a perturbed environment, and spontaneous formation of different moving states and dynamic transitions were observed.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jie Fang, Kan Yao, Mingsong Wang, Zhuohang Yu, Tianyi Zhang, Taizhi Jiang, Suichu Huang, Brian A. Korgel, Mauricio Terrones, Andrea Alu, Yuebing Zheng
Summary: In this study, we achieved on-demand exciton-polariton emission from a wide range of TMDs at room temperature by hybridizing excitons with broadband Mie resonances. The system demonstrated stable polaritonic photoluminescence and multiple Rabi splittings.
Article
Multidisciplinary Sciences
Pavana Siddhartha Kollipara, Xiuying Li, Jingang Li, Zhihan Chen, Hongru Ding, Youngsun Kim, Suichu Huang, Zhenpeng Qin, Yuebing Zheng
Summary: This article introduces the low-temperature opto-thermophoretic tweezers (HOTTs) technology, which achieves low-power trapping of diverse colloids and biological cells at sub-ambient temperatures through an environmental cooling strategy. At the same time, HOTTs can also suppress thermal damage. With their noninvasiveness and versatile capabilities, HOTTs have great potential for research and applications in materials science and biotechnology.
NATURE COMMUNICATIONS
(2023)
Editorial Material
Optics
Youngsun Kim, Yuebing Zheng
Summary: By decoupling temperature and flow fields, ISO-FLUCS enables precise control over fluid manipulation while minimizing thermal damage through symmetry-correlated laser scan sequences. Quasi-isothermal optofluidic streaming is achieved.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Marcel Herber, Ana Jimenez Amaya, Nicklas Giese, Bharath Bangalore Rajeeva, Yuebing Zheng, Eric H. Hill
Summary: The printing of layered silicate nanoclays using a laser-directed microbubble was established, and the influence of surface chemistry on the resulting assembly was studied. This work also demonstrated the potential of this method in fabricating ultrasensitive molecular sensors.
ACS APPLIED MATERIALS & INTERFACES
(2023)
