Article
Biotechnology & Applied Microbiology
Zhang Yi, Yu Hongda, Sun Mengdi, Xu Yong
Summary: This paper presents a hybrid swarming algorithm that combines Ant Colony Optimization and Physarum Polycephalum Algorithm, and introduces the use of Van Der Waals force in the pheromone update mechanism. The improved algorithm prevents premature convergence into local optima and has demonstrated excellent accuracy and convergence time in simulations. Comparison with other advanced algorithms also indicates its superior performance. The robustness and versatility of the hybrid algorithm are further verified using the capitals of 35 Asian countries.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Review
Chemistry, Multidisciplinary
Yicong Chen, Jun Chen, Zhibing Li
Summary: This article reviews the recent progress on cold cathodes with graphene as the direction, including both experimental and theoretical studies. The review emphasizes the phenomena that are absent in conventional cold cathodes but present in two-dimensional van der Waals materials, such as directionality and coherence. It also covers the fabrication of emitter structures for field emission applications, their field emission properties, and the existing field emission model.
Article
Chemistry, Physical
Brahmanandam Javvaji, Xiaoying Zhuang, Timon Rabczuk, Bohayra Mortazavi
Summary: The paper proposes an innovative approach based on density functional theory (DFT) and machine-learning interatomic potentials (MLIPs) to accurately investigate higher-order deformation-induced electricity generation in 2D van der Waals (vdW) bilayers. The results show that the flexoelectric effect in bilayers can be significantly larger than in monolayers, providing insights for the design of energy harvesting devices.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Yuri Shakhman, Ilan Shumilin, Daniel Harries
Summary: To cope with stress induced by high salinity and hydrostatic pressure, marine animals accumulate osmolytes. This study focuses on the mechanism of urea's action on lipid membranes and its interaction with trimethylamine N-oxide (TMAO). It is found that urea weakens the van der Waals attraction between bilayers and the effects of urea and TMAO are largely additive. This research is important in understanding the role of osmolytes in lipid adhesion and fusion.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Xiangdong Guo, Wei Lyu, Tinghan Chen, Yang Luo, Chenchen Wu, Bei Yang, Zhipei Sun, F. Javier Garcia de Abajo, Xiaoxia Yang, Qing Dai
Summary: 2D monolayers can be vertically stacked in van der Waals heterostructures to support a wide range of confined polaritons. This offers advantages in terms of controlling the constituent layers, stacking sequence, and twist angles. These heterostructures have extended the performance and functions of polaritons, and potential applications include nanophotonic integrated circuits.
ADVANCED MATERIALS
(2023)
Article
Multidisciplinary Sciences
A. J. Sternbach, S. H. Chae, S. Latini, A. A. Rikhter, Y. Shao, B. Li, D. Rhodes, B. Kim, P. J. Schuck, X. Xu, X-Y Zhu, R. D. Averitt, J. Hone, M. M. Fogler, A. Rubio, D. N. Basov
Summary: Layered crystals, such as tungsten diselenide, can exhibit unconventional optical properties that allow for the propagation of subdiffractional waveguide modes with hyperbolic dispersion. This study demonstrates optically induced hyperbolicity in WSe2 and explores the role of quantum transitions of excitons in the observed polaritonic response.
Article
Physics, Applied
Hiromu Hamasaki, Kaori Hirahara
Summary: The van der Waals cohesive forces between two carbon nanotubes were studied experimentally using transmission electron microscopy. The contact forces were determined by measuring the deflection and Young's modulus of the nanotubes. The cohesive forces at cross-contacts ranged from 1.7 to 8.5 nN and increased with the diameter of the nanotubes. The closed cap of the nanotube exhibited a nine times larger cohesive force compared to the sidewall.
APPLIED PHYSICS EXPRESS
(2023)
Article
Materials Science, Multidisciplinary
Rafael Besse, Julian F. R. Silveira, Zeyu Jiang, Damien West, Shengbai Zhang, Juarez L. F. Da Silva
Summary: This study demonstrates two mechanisms influencing the band gaps of vdW heterostructures: interfacial hybridization leading to gap reduction, and formation of an interfacial electric dipole resulting in gap increase.
Article
Physics, Multidisciplinary
Kui Hou, Zhendong Zhang, Chengjie Zhu, Yaping Yang
Summary: In this study, we theoretically investigate the influence of the Van der Waals interaction on the two-photon blockade phenomenon and demonstrate the energy splitting and the achievement of two-photon blockade. Furthermore, we show that the radiative phase of two atoms can be optimized to enhance the two-photon blockade effect. These findings have potential applications in manipulating photon states and generating nonclassical light sources.
FRONTIERS IN PHYSICS
(2022)
Review
Chemistry, Multidisciplinary
Hui-Lei Hou, Cosimo Anichini, Paolo Samori, Alejandro Criado, Maurizio Prato
Summary: In the past 15 years, 2D materials have revolutionized materials science and become powerful components for high-performance chemical sensors. By forming van der Waals heterostructures (VDWHs), the individual drawbacks of 2D materials can be overcome, leading to superior sensitivities, selectivity, and stability. This review discusses the latest developments in chemical sensors based on VDWHs of 2D materials, including sensing mechanisms and future directions with potential impact in environmental sciences and biomedical applications.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Fang Wang, Tao Zhang, Runzhang Xie, Anna Liu, Fuxing Dai, Yue Chen, Tengfei Xu, Hailu Wang, Zhen Wang, Lei Liao, Jianlu Wang, Peng Zhou, Weida Hu
Summary: With the continuous advancement of nanofabrication techniques and the discovery of useful manipulation mechanisms in high-performance applications, the morphology and usage of junction devices in photodetectors have undergone fundamental revolution. New types of photodetectors, not relying on any junction, have emerged, offering high signal-to-noise ratio and multidimensional modulation. This review focuses on a unique category of material systems, van der Waals materials, which support novel high-performance photodetectors beyond junctions.
ADVANCED MATERIALS
(2023)
Article
Multidisciplinary Sciences
Long Zhang, Fengcheng Wu, Shaocong Hou, Zhe Zhang, Yu-Hsun Chou, Kenji Watanabe, Takashi Taniguchi, Stephen R. Forrest, Hui Deng
Summary: Controlling matter-light interactions with cavities is crucial in modern science and technology. By integrating MoSe2-WS2 heterobilayers in a microcavity, cooperative coupling between moire-lattice excitons and microcavity photons has been established, providing versatile control of both matter and light. This moire polariton system combines strong nonlinearity and microscopic-scale tuning of matter excitations, offering a platform to study collective phenomena from tunable arrays of quantum emitters.
Review
Chemistry, Multidisciplinary
Tianping Ying, Tongxu Yu, Yanpeng Qi, Xiaolong Chen, Hideo Hosono
Summary: By breaking traditional alloying strategy restrictions, the high entropy concept has expanded the field of alloy exploitation. This review focuses on the combination of the high entropy concept and van der Waals systems to create a new category of materials called high entropy van der Waals materials (HEX). The design strategy for HEX incorporates the local features of high entropy materials and the holistic degrees of freedom in van der Waals materials, successfully leading to the discovery of various high entropy compounds with desirable physical properties. Additionally, deliberate design of structural units and their stacking configuration in HEX can also enhance catalytic performance.
Article
Chemistry, Multidisciplinary
Fabian Mertens, David Moenkebuescher, Umut Parlak, Carla Boix-Constant, Samuel Manas-Valero, Margherita Matzer, Rajdeep Adhikari, Alberta Bonanni, Eugenio Coronado, Alexandra M. Kalashnikova, Davide Bossini, Mirko Cinchetti
Summary: Coherent THz optical lattice and hybridized phonon-magnon modes are induced by femtosecond laser pulses in an antiferromagnetic van der Waals semiconductor FePS3. The behavior of laser-driven lattice and spin dynamics is explored in a bulk crystal and a 380 nm-thick exfoliated flake under different conditions. The results reveal the connection between a coherent phonon mode and the long-range magnetic order, as well as the hybridization of a 3.2 THz phonon with a magnon mode in the presence of an external magnetic field.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xiaoqing Chen, Yu Zhang, Ruijuan Tian, Xianghu Wu, Zhengdong Luo, Yan Liu, Xinran Wang, Jianlin Zhao, Xuetao Gan
Summary: A quadratically nonlinear photodetector (QNPD) composed of a van der Waals (vdW) stacked GaSe/InSe heterostructure is reported in this study. The QNPD exhibits unique electronic and optical attributes and extends the photodetection wavelength range from 900 to 1750 nm due to the extra second-harmonic generation (SHG) process in GaSe/InSe. It is highly sensitive to the variation of optical intensity and can be used as an autocorrelator for measuring ultrafast pulse widths and an optoelectronic mixer for signal processing.
Article
Optics
Raul Celistrino Teixeira
Article
Multidisciplinary Sciences
Karan K. Mehta, Chi Zhang, Maciej Malinowski, Thanh-Long Nguyen, Martin Stadler, Jonathan P. Home
Article
Physics, Multidisciplinary
P. G. S. Dias, M. A. F. Biscassi, P. H. N. Magnani, R. F. Shiozaki, Ph W. Courteille, R. Celistrino Teixeira
Summary: In this article, the collimation of a strontium atomic beam emerging from an array of microtubes at the output of an atomic oven is measured through characterization of beam fluorescence caused by a monochromatic laser beam nearby resonance with a strontium electronic transition. A theoretical model is developed to calculate the total fluorescence rate as a function of collimation, atomic oven temperature, and laser frequency, taking into account collision effects between atoms and atoms with recipient walls. The method and theory presented are useful for laboratories interested in implementing similar atomic sources for experiments with atomic beams or cold atomic samples.
BRAZILIAN JOURNAL OF PHYSICS
(2021)
Correction
Multidisciplinary Sciences
Karan K. Mehta, Chi Zhang, Maciej Malinowski, Thanh-Long Nguyen, Martin Stadler, Jonathan P. Home
Summary: A correction to the paper has been published and can be accessed at the provided link.
Article
Physics, Multidisciplinary
Florentin Reiter, Thanh Long Nguyen, Jonathan P. Home, Susanne F. Yelin
PHYSICAL REVIEW LETTERS
(2020)
Article
Physics, Multidisciplinary
R. C. Teixeira, A. Larrouy, A. Muni, L. Lachaud, J-M Raimond, S. Gleyzes, M. Brune
PHYSICAL REVIEW LETTERS
(2020)
Article
Quantum Science & Technology
J. Medina Duenas, G. O'Ryan Perez, Carla Hermann-Avigliano, L. E. F. Foa Torres
Summary: The study investigates the propagation of squeezed states in a topological one-dimensional waveguide array, showing that the topologically protected state robustly preserves the phase of the squeezed quadrature. This topological advantage can be harnessed for quantum information protocols.
Article
Optics
D. Rivero, C. Beli Silva, M. A. Moreno Armijo, H. Kessler, H. F. da Silva, G. Comito, R. F. Shiozaki, R. C. Teixeira, Ph W. Courteille
Summary: We report on the progress of constructing a continuous matter wave interferometer for inertial sensing by non-destructively observing Bloch oscillations. Currently, around 10(5) strontium-88 atoms are cooled to below 1 μK, and a laser spectrometer is used to drive atom-cavity interaction and monitor atomic motion in real time.
APPLIED PHYSICS B-LASERS AND OPTICS
(2022)
Article
Physics, Multidisciplinary
Andrea Muni, Lea Lachaud, Angelo Couto, Michel Poirier, Raul Celistrino Teixeira, Jean-Michel Raimond, Michel Brune, Sebastien Gleyzes
Summary: This study demonstrates the coherent manipulation of circular Rydberg states using the electrostatic coupling between the two valence electrons of strontium and optical pulses. The state of the Rydberg electron can be mapped onto the ionic core, enabling non-destructive detection of circular states and the realization of a hybrid optical-microwave platform for quantum technology.
Article
Instruments & Instrumentation
N. Sauerwein, T. Cantat-Moltrecht, I. T. Grigoras, J. -p. Brantut
Summary: In this paper, a mechanical platform with enhanced vibration damping properties for cavity quantum-electrodynamics experiments is introduced. The platform combines a soft, vibration damping core with a rigid shell, and passively dampens the vibrations caused by piezoelectric actuators. It effectively suppresses the mechanical resonances of the cavity and is compatible with ultra-high vacuum conditions and optical access to the cavity center.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2022)
Article
Quantum Science & Technology
Timothy S. S. Woodworth, Carla Hermann-Avigliano, Kam Wai Clifford Chan, Alberto M. M. Marino
Summary: Quantum metrology aims to enhance the precision in parameter estimation by applying quantum techniques and/or resources to classical sensing approaches. In this study, we experimentally demonstrate the saturation of quantum Cramer-Rao bound for transmission estimation using a bright two-mode squeezed state, showing a significant improvement over classical protocols.
EPJ QUANTUM TECHNOLOGY
(2022)
Article
Physics, Multidisciplinary
M. Uria, A. Maldonado-Trapp, C. Hermann-Avigliano, P. Solano
Summary: Nonlinear light-matter interactions reveal the quantum nature of coherent states by exhibiting negative values in their Wigner function while maintaining their Poissonian photon statistics. These states have nonminimum uncertainty and can achieve the Heisenberg limit, providing a metrological advantage. Non-Gaussianity of light arises from general properties of nonlinear interactions using a polarizable media, whether resonant or dispersive. Our results highlight the importance of extracting useful quantum features from seemingly classical states of light, which is relevant for quantum optics applications.
PHYSICAL REVIEW RESEARCH
(2023)
Article
Physics, Fluids & Plasmas
Javier Carrasco, Jeronimo R. Maze, Carla Hermann-Avigliano, Felipe Barra
Summary: We study a quantum battery made of nonmutually interacting qubits and a dissipative electromagnetic field mode. The system's charging energy, ergotropy, transfer rate, and power are quantified, showing the presence of collective enhancements despite losses, which can even increase with dissipation. Furthermore, scaling up the battery size can reduce performance deterioration caused by dissipation, which is useful for experimental realizations when controlling the quality of the resonator and the number of qubits are limiting factors.
Article
Optics
P. G. S. Dias, M. Frometa, P. H. N. Magnani, K. R. B. Theophilo, M. Hugbart, Ph W. Courteille, R. Celistrino Teixeira
Summary: This method presents a way to obtain the first-order temporal correlation function of light scattered by quantum scatterers, based on a mirror-assisted backscattering interferometric setup. By adding a half wave plate to the interferometer, the fringe contrast becomes the correlation function of the light scattered by atoms, simplifying the process. This method has direct applications in obtaining the saturated spectrum of quantum systems and has similarities with a double Mach-Zehnder interferometer.
Article
Physics, Multidisciplinary
T. Cantat-Moltrecht, R. Cortinas, B. Ravon, P. Mehaignerie, S. Haroche, J. M. Raimond, M. Favier, M. Brune, C. Sayrin
PHYSICAL REVIEW RESEARCH
(2020)
