Article
Multidisciplinary Sciences
B. Ciraulo, J. Garcia-Guirado, I. de Miguel, J. Ortega Arroyo, R. Quidant
Summary: The study combines digital holographic microscopy with thermoplasmonics to identify different contributions of thermally driven fluid dynamic phenomena, achieving all-optical control of microfluidic devices. The researchers demonstrate that local thermal perturbation leads to long-range changes in the dynamics of the system.
NATURE COMMUNICATIONS
(2021)
Article
Optics
Shun Li, Zheng-Jun Li, Hai-Ying Li, Tan Qu, Xiao-Jing Yang
Summary: A theoretical approach based on the generalized Lorenz-Mie theory is introduced to study the radiation force exerted on a uniaxial anisotropic sphere illuminated by dual zero-order Bessel beams. Analytical expressions of the radiation forces are derived using the Maxwell's stress tensor, and the accuracy of the theory is verified by comparing the results with simplified cases. The effects of beam parameters, particle size parameters, and anisotropy parameters on the radiation forces are discussed, and the optical force properties of a uniaxial anisotropic sphere in different traps are compared.
OPTICS COMMUNICATIONS
(2023)
Article
Optics
Shun Li, Zheng-Jun Li, Hai-Ying Li, Tan Qu, Xiao-Jing Yang
Summary: A theoretical approach based on the generalized Lorenz-Mie theory is introduced to study the radiation force on an anisotropic sphere illuminated by dual zero-order Bessel beams. The accuracy of the theory is verified by comparing results with simplified cases and discussing the effects of various parameters on radiation forces. The study also compares optical force properties in different trapping scenarios, providing a basis for optical micromanipulation of complex particles.
OPTICS COMMUNICATIONS
(2022)
Article
Optics
Jing Bai, Cheng-Xian Ge, Zhen-Sen Wu
Summary: In this paper, an analytical method is presented to study the radiation force (RF) of chiral spheres generated by dual laser beams using the generalized Lorenz-Mie theory (GLMT). The method involves representing the incident laser beam using vector spherical harmonic functions (VSHFs) in the sphere system. The lateral and axial RF on the chiral sphere is derived based on the momentum conservation theory. The study of the RF of dual laser beams on chiral particles is important for improving optical tweezers technology and achieving high accuracy operation of chiral particles.
Article
Chemistry, Analytical
Zhi Li, Dongyang Li, Mengda Zhang, Yingxia Jin, Qingbo Xu, Haiyan Yang, Yuze Sun, Xiaoyun Pu, Liang Li, Yuanxian Zhang
Summary: This study reports a fiber optofluidic laser using an RhB-doped ionic liquid as the gain medium and explores its application for highly sensitive pH sensing. The laser emission behavior is highly dependent on the pH value of the gain medium, allowing for dual sensing in different pH conditions.
Article
Materials Science, Multidisciplinary
Devendra Singh Bhakuni, Lea F. Santos, Yevgeny Bar Lev
Summary: A mechanism to suppress heating in periodically driven many-body quantum systems is proposed, utilizing long-range interactions and relevant initial conditions. Decreasing the driving frequency can reduce heating and entanglement buildup in these systems. This mechanism is robust to local perturbations and can be generalized to higher dimensions.
Article
Chemistry, Analytical
Zachary J. Walker, Tanner Wells, Ethan Belliston, Seth B. Walker, Carson Zeller, Mohammad Julker Neyen Sampad, S. M. Saiduzzaman, Holger Schmidt, Aaron R. Hawkins
Summary: This article presents an optofluidic device that utilizes optical scattering and gradient forces to trap particles. Two different designs are compared and the second design is shown to have higher efficiency.
Article
Optics
Lyubomir Stoyanov, Maya Zhekova, Aleksander Stefanov, Boris Ivanov, Ivan Stefanov, Gerhard G. Paulus, Alexander Dreischuh
Summary: The research team demonstrated a novel approach to generate long-range Gauss-Bessel beams by imprinting a vortex in a Gaussian beam and focusing/Fourier-transforming the ring-shaped beam with a lens. This method can achieve divergence angles in the microradian range and Gauss-Bessel beam lengths up to 2.5 m.
OPTICS COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Linfeng Zhang, Han Wang, Maria Carolina Muniz, Athanassios Z. Panagiotopoulos, Roberto Car, Weinan E
Summary: Researchers have extended the deep potential model to approximate the long-range electrostatic interaction between ions and valence electrons, improving the accuracy and predictive power of the model.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Yao Wang, Meng Zheng, Yunrui Li, Juan Chen, Jinyu Ye, Chenliang Ye, Shuna Li, Jin Wang, Yongfa Zhu, Shi-Gang Sun, Dingsheng Wang
Summary: Optimizing the interatomic distance between dual sites is crucial for the commercialization of direct ethanol fuel cells. Holding long-range Rh-O-Pt dual sites weakens the reaction barrier of C-C cleavage during the ethanol oxidation reaction, achieving a high current density and remarkable stability. The redistribution of surface-localized electrons around Rh-O-Pt promotes the direct oxidation of -OH, accelerating C-C bond cleavage and increasing the selectivity of C1 products.
Article
Optics
Meungho Seo, In Hwan Do, Hansuek Lee, Dai-Hyuk Yu, Sangwon Seo, Hyun-Gue Hong, Jeong Ho Han, Sang Eon Park, Sang-Bum Lee, Taeg Yong Kwon, Jongchul Mun, Jae Hoon Lee
Summary: In this report, a method of imaging atoms during transport using a moving optical dipole trap is introduced. The in-situ characterization of atom transport is demonstrated using a moving-frame imaging system. Precise positioning of atoms near tapered fibers is also tested.
Article
Physics, Multidisciplinary
Koji Michishio, Hiroyuki Higaki, Akira Ishida, Nagayasu Oshima
Summary: This study demonstrates an efficient trapping and extraction method for LINAC-based positron beams using a center-hole SiC remoderator. The proposed trapping scheme achieves a high trapping efficiency and improves the quality and throughput rate of experiments.
NEW JOURNAL OF PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Eirini Myrovali, Kyrillos Papadopoulos, Irene Iglesias, Marina Spasova, Michael Farle, Ulf Wiedwald, Makis Angelakeris
Summary: The study shows that smaller particles form clusters first, then guide chain formation through cluster-cluster interactions, while larger particles readily form chains through particle-particle interactions. In both cases, dipolar interactions between neighboring nanoparticles increase significantly, leading to a substantial enhancement in their collective magnetic features, resulting in an increase in magnetic particle hyperthermia efficiency by up to one order of magnitude.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Physics, Multidisciplinary
A. G. Catalano, F. Mattiotti, J. Dubail, D. Hagenmuller, T. Prosen, F. Franchini, G. Pupillo
Summary: In this study, we analyze the exciton propagation in a d-dimensional lattice with power-law hopping cc 1/ra and dephasing. We find that in the strong dephasing regime, the dynamics can be described by a classical master equation for an exclusion process with long jumps. The spatial distribution of the exciton changes at a critical value of the decay exponent, and it exhibits anomalous diffusion behavior.
PHYSICAL REVIEW LETTERS
(2023)
Article
Computer Science, Information Systems
Yunfeng Bai, Qingwen Liu, Riqing Chen, Qingqing Zhang, Wei Wang
Summary: In this article, a long-range optical wireless information and power transfer system utilizing retro-reflectors, a gain medium, and a telescope internal modulator to form the resonant beam is proposed, achieving high-power and high-rate simultaneous wireless information and power transfer. A transfer matrix is adopted to depict the beam modulation, resonator stability, transmission loss, and beam distribution. A model for energy harvesting and data receiving is provided to evaluate the SWIPT performance. Numerical results demonstrate that the proposed system can simultaneously provide 0-9 W electrical power and 18-bit/s/Hz spectral efficiency over a 20-m distance.
IEEE INTERNET OF THINGS JOURNAL
(2023)
