Article
Physics, Multidisciplinary
M. Liu, Y. Zhang, G. L. Klimchitskaya, V. M. Mostepanenko, U. Mohideen
Summary: The experimental confirmation of the unusually big thermal effect at separations below 1 μm for graphene suggests that its effective temperature is determined by the Fermi velocity rather than the speed of light.
PHYSICAL REVIEW LETTERS
(2021)
Article
Engineering, Mechanical
Guodong Yue, Linlin Zhang, Bo Ren, Jing Dong, Dazhi Wang
Summary: This study introduces a novel method called the modal utilization method of periodic structure (MUMPS) to measure the thermal forces on railway tracks. MUMPS averages different eigenfrequencies to determine the influence of track parameters on vibration modes. Experimental validation demonstrates that MUMPS is accurate and suitable for engineering applications.
NONLINEAR DYNAMICS
(2023)
Article
Multidisciplinary Sciences
Yinqiu Ji, Christopher C. M. Baker, Viorel D. Popescu, Jiaxin Wang, Chunying Wu, Zhengyang Wang, Yuanheng Li, Lin Wang, Chaolang Hua, Zhongxing Yang, Chunyan Yang, Charles C. Y. Xu, Alex Diana, Qingzhong Wen, Naomi E. Pierce, Douglas W. Yu
Summary: This study estimated the distribution of vertebrates in the Ailaoshan reserve in China using environmental DNA from leeches. The researchers found that species richness is related to elevation and distance to the reserve edge.
NATURE COMMUNICATIONS
(2022)
Article
Optics
Piotr Szankowski
Summary: In classical mechanics, simplifying a many body problem can be done by using surrogate force fields, but in quantum mechanics, noise representations are typically used which may exhibit random fluctuations.
Article
Geochemistry & Geophysics
Eric L. Geist, Uri S. ten Brink
Summary: This study calculates the on-fault earthquake magnitude distributions in northern Caribbean faults and suggests that rupture segmentation of the subduction interface along the Hispaniola-Puerto Rico Trench (PRT) fault and seismic coupling on the PRT fault play a primary role in controlling the spatial arrangement of earthquakes. By introducing a rupture barrier for the Hispaniola-PRT fault and assigning a low slip rate on the PRT fault, the model aligns best with historical earthquake observations in the region. Varying the slip rate on the PRT fault and different segmentation scenarios results in significant changes to the optimal magnitude distribution on faults farther away, highlighting the complexity and inter-dependency of on-fault magnitude distributions.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Multidisciplinary Sciences
Ruishi Qi, Ruochen Shi, Yuehui Li, Yuanwei Sun, Mei Wu, Ning Li, Jinlong Du, Kaihui Liu, Chunlin Chen, Ji Chen, Feng Wang, Dapeng Yu, En-Ge Wang, Peng Gao
Summary: Four-dimensional electron energy-loss spectroscopy measurements reveal localized modes at heterointerfaces that impact thermal conductance and electron mobility. Experimental challenges stem from the need to achieve combined spatial, momentum, and spectral resolutions to probe these modes effectively.
Article
Chemistry, Physical
Yuxuan Yao, William L. Hase, Giovanni Granucci, Maurizio Persico
Summary: The research compares algorithms for sampling initial positions and momenta in a molecular system for classical trajectory simulations. The goal is to reproduce the phase space quantum distribution for a vibrational eigenstate, as in Wigner theory. Two approaches are introduced to address the issue of controlling total energy and energy partition among vibrational modes.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Automation & Control Systems
Takahiro Nozaki, Hermano Igo Krebs
Summary: Depth, proximity, and tactile sensors are commonly used in robotic object manipulation. To address the limitations of each sensor, a novel sensor is introduced that can measure millimetric distance, surface tilt, and contact force simultaneously. The sensor demonstrated good performance during a contact task, achieving smooth transition between different contact conditions.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Chemistry, Physical
Margaritis Kostoglou, Thodoris D. Karapantsios, Angeliki P. Chondrou, Maria C. Vlachou
Summary: It is commonly known that different methods for measuring particle size distributions can yield significantly different results. While this can be explained for solid particles due to differences in aspects beyond just size (such as shape), it is more challenging for small size emulsion droplets which are spherical in shape. This study proposes that the error distribution in droplet size is the reason for different results from different measuring methods. Each method relies on a physical principle, causing the error to be uniformly distributed across the values of the corresponding variable. Attempts to transform this variable result in severe error maldistribution. The study not only explains the deviations in droplet size distribution between measuring methods but also suggests the combination of information from two methods to improve accuracy compared to individual methods.
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
(2022)
Article
Optics
Siddhant Das, Ward Struyve
Summary: Experimental data show that some time-of-arrival probability distributions do not exhibit the expected behavior, leading to doubts about the physical adequacy of these proposals, while the quantum flux distribution demonstrates the expected behavior.
Article
Mathematics
Rodolfo Vera-Amaro, Mario E. Rivero-Angeles, Alberto Luviano-Juarez
Summary: Animal monitoring systems often use expensive GPS-based systems for accurate trajectories, but synthetic trajectories with similar statistical properties can be an alternative approach. These synthetic trajectories are useful for designing surveillance systems and aid in animal conservation efforts. The proposed method in this study generates synthetic animal trajectories using simple phase-type distributions, achieving accurate approximations of movement patterns for four endangered species. This approach reduces processing time and complexity.
Article
Materials Science, Multidisciplinary
Shinya Iwata, Hiroaki Uehara, Tatsuki Okamoto, Tatsuo Takada
Summary: The effects of an external electric field on the rupture of molecules in polymeric materials were evaluated at the molecular level using quantum chemical calculations. It was found that oxidation and impurities have an impact on the rupture force of molecules, as well as the decomposition of cross-linking agents in polyethylene leading to the formation of water trees.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Optics
Jiho Park, Heonoh Kim, Han Seb Moon
Summary: This study demonstrates a second-order interference experiment using thermal light from a warm atomic ensemble in two spatially separated unbalanced Michelson interferometers. The bright thermal light used for second-order interference is emitted via collective two-photon coherence in Doppler-broadened cascade-type Rb-87 atoms. The results suggest that the temporal waveforms of the interfering thermal light in the two spatially separated interferometers exhibit similarities with time-energy entangled photon pairs in Franson interferometry.
PHOTONICS RESEARCH
(2021)
Article
Mechanics
Yu-Tong Sui, Shuai Li, Fu-Ren Ming, A-Man Zhang
Summary: This study reports on an experimental investigation of the trajectories of truncated cone projectiles during water entry. The stability of the water entry trajectory is crucial for projectile motion control. It is found that the wetted surface of the projectile's nose plays a significant role in trajectory stability. The study systematically quantifies the relationship between trajectory stability and nose parameters, providing important insights for future design considerations.
Review
Biochemistry & Molecular Biology
Gunnar Jeschke
Summary: Labeling techniques such as EPR spectroscopy and single-molecule FRET can accurately measure distances within the range of tens of angstroms, providing valuable information for structural modeling of proteins and protein complexes. However, challenges such as limited restraints, label interference, and balancing fitting quality still need to be addressed for further progress in this field.
Article
Chemistry, Medicinal
Caitlin Wood, Sean McEvoy, Vladimir Razinkov, Wei Qi, Eric M. Furst, Christopher J. Roberts
JOURNAL OF PHARMACEUTICAL SCIENCES
(2020)
Article
Mechanics
Kimberly A. Dennis, Yan Gao, Alhad Phatak, Philip F. Sullivan, Eric M. Furst
JOURNAL OF RHEOLOGY
(2020)
Article
Chemistry, Physical
Francesco Bonacci, Xavier Chateau, Eric M. Furst, Jennifer Fusier, Julie Goyon, Anael Lemaitre
Article
Mechanics
Yimin Luo, Yu-Fan Lee, Kimberly A. Dennis, Carlos Velez, Scott C. Brown, Eric M. Furst, Norman J. Wagner
Article
Chemistry, Physical
Hojin Kim, Eric M. Furst
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2020)
Article
Chemistry, Multidisciplinary
Hojin Kim, Moujhuri Sau, Eric M. Furst
Article
Chemistry, Medicinal
Caitlin Wood, Vladimir Razinkov, Wei Qi, Eric M. Furst, Christopher J. Roberts
Summary: This study introduces a rapid method to evaluate protein aggregation propensity at air-water interfaces (AWI). Temperature had minimal effect under this technique's rapid interface turnover time scales, while electrostatic protein-protein interactions mediated by pH changes were more influential for particle formation via AWI. Nonionic surfactants substantially reduced particle formation for monoclonal antibodies, but not for a globular protein.
JOURNAL OF PHARMACEUTICAL SCIENCES
(2021)
Article
Physics, Multidisciplinary
Zuyuan Wang, Hojin Kim, Maria Secchi, Maurizio Montagna, Eric M. Furst, Bahram Djafari-Rouhani, George Fytas
Summary: The vibrational eigenmodes of dumbbell-shaped polystyrene nanoparticles were studied using Brillouin light spectroscopy. The experimental spectra were recorded and theoretically calculated. Unlike spherical particles, the eigenmodes of dumbbells exhibit either single or double degeneracy due to their axial symmetry. A new low-frequency peak observed in the BLS spectrum was attributed to the out-of-phase vibration of the two lobes. The quantization of acoustic modes in these molecule-shaped dumbbell particles changes as the separation between the lobes increases.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Multidisciplinary
Francesco Bonacci, Xavier Chateau, Eric M. Furst, Julie Goyon, Anael Lemaitre
Summary: The study investigates the origin of yield stress aging in semidense, saline, and turbid suspensions, highlighting the importance of a time-dependent contact-scale rolling threshold in controlling suspension yield stress and its aging kinetics. The authors establish a constitutive relation between macroscopic shear modulus and yield stress that is applicable to various colloidal systems.
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Caitlin V. Wood, Vladimir I. Razinkov, Wei Qi, Christopher J. Roberts, Jan Vermant, Eric M. Furst
Summary: When monoclonal antibodies come into contact with air-water interface, they tend to form aggregates, which has negative effects on their performance. So far, it has been challenging to detect and characterize interfacial aggregation. In this study, the mechanical response induced by interfacial adsorption was examined by measuring the interfacial shear rheology of a model antibody, AS-IgG1, at the air-water interface. The results revealed that strong viscoelastic layers of AS-IgG1 were formed upon protein adsorption, and the compliance of the interfacial protein layer was found to be correlated with the pH and concentration of the bulk solution.
Article
Chemistry, Multidisciplinary
Hojin Kim, Abdellatif Gueddida, Zuyuan Wang, Bahram Djafari-Rouhani, George Fytas, Eric M. Furst
Summary: Phononic materials can alter the propagation of acoustic waves and are useful for metamaterials. In this study, anisotropic crystals with dumbbell-shaped nanoparticles were fabricated, and direction-dependent phononic bandgaps were detected. The local resonances of the constituent nanoparticles enable metamaterial behavior. This study provides a structure-property relationship for designing anisotropic phononic materials with targeted phononic bandgaps.
Article
Mechanics
Qi Li, Kimberly A. Dennis, Yu-Fan Lee, Eric M. Furst
Summary: The dynamics of charged and hard-sphere silica colloidal suspensions are measured and explained using diffusing wave spectroscopy and the Generalized Stokes-Einstein Relation (GSER). The results show qualitative agreement with bulk rheology at high concentration, but with higher quantitative values. The two-point GSER provides better quantitative agreement between bulk and microrheology.
JOURNAL OF RHEOLOGY
(2023)
Article
Physics, Fluids & Plasmas
Nicholas Sbalbi, Qi Li, Eric M. Furst
Summary: We investigated the effects of particle size, concentration, and interactions on the photon transport mean-free path in diffusing wave spectroscopy. For large scatterers, the interactions between them have a weak influence on the mean-free path. However, for scatterers smaller than the wavelength of light, attractive or repulsive interactions can lead to nonmonotonic behavior in the mean-free path, with the effect being strongest for repulsive particles.
Article
Medicine, Research & Experimental
Mahlet A. Woldeyes, Wei Qi, Vladimir Razinkov, Eric M. Furst, Christopher J. Roberts
MOLECULAR PHARMACEUTICS
(2020)
Article
Chemistry, Physical
Yu-Jiun Lin, Jeffrey Horner, Brandon Illie, Matthew L. Lynch, Eric M. Furst, Norman J. Wagner
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2020)