Article
Chemistry, Multidisciplinary
Daniel Sofer, Gilad Yossifon, Touvia Miloh
Summary: The electro-rotation and electro-orientation behavior of metallodielectric spherical Janus particles are studied analytically and experimentally. Analytic expressions for the dipole terms of the Janus particles are obtained, and the EROT and EOR spectra are determined and compared against experiments. Although a good agreement is found in the frequency response, further improvements are needed to address the discrepancy in the amplitude of the angular velocity.
Article
Chemistry, Physical
Behrouz Behdani, Kun Wang, Carlos A. Silvera Batista
Summary: Metallodielectric Janus particles and electric fields play a crucial role in the development of innovative concepts on AC electrokinetics, directed transport, and collective dynamics. Measurement methods and strategies to tailor the polarizability of JPs are discussed, providing insights into the fundamental polarization mechanisms through modeling. Insights from this study offer quantitative information for the design of colloidal machines with desired features such as targeted propulsion and tunable collective dynamics.
Article
Chemistry, Multidisciplinary
Danh Nguyen, James Wu, Patrick Corrigan, Ying Li
Summary: This study investigates the mechanisms of lipid bilayer disruption by Janus nanoparticles (NPs) through computational simulations. The results reveal that the Janus balance and the concentration of charged phospholipids play significant roles in the interactions between Janus NPs and lipid bilayers. The study provides molecular insights into the selectivity of Janus NPs for negatively charged lipid membranes and highlights the importance of the anisotropic properties of Janus NPs in membrane disruption.
Article
Chemistry, Multidisciplinary
Behrouz Behdani, Jacob Lumpkins, Carlos A. Silvera A. Batista
Summary: The objective of this article is to investigate the effect of electric polarizability on the propulsion and collective dynamics of metallodielectric Janus particles. Janus particles with sequential layers of titanium and SiO2 were fabricated to create model systems. The study found that the propulsion velocity spectra closely matched the electrorotation spectra, indicating a relationship between the two. The results also showed that the propulsion velocity reflects the real part of the particles' polarizability, and the thickness of the metal cap affects their behavior.
Article
Chemistry, Physical
A. M. Boymelgreen, G. Kunti, P. Garcia-Sanchez, A. Ramos, G. Yossifon, T. Miloh
Summary: The study investigates the interaction between active particles and walls to explain discrepancies between experiments and theory. The findings show that the motion direction and frequency dispersion of particles can be controlled by the interaction between ICEP and sDEP. Proximity to walls enhances this interaction and has a significant impact on particle mobility.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Analytical
Touvia Miloh, Jacob Nagler
Summary: A theoretical study was conducted on the hydrodynamic and electrokinetic response of metallic spherical polarized colloids and metallodielectic Janus particles under arbitrary non-uniform ambient electric fields. New expressions for dielectrophoretic and induced-charge electrophoretic forces and moments were derived and compared with existing solutions. The levitation problem of metallic and Janus particles near a powered electrode in a cylindrical pore was also analyzed.
Article
Chemistry, Multidisciplinary
Qiangqiang Sun, Xuanming Hu, Boran Xu, Shiji Lin, Xu Deng, Shaobing Zhou
Summary: This study reports a method of manipulating droplet motion and functionalization using an invisible charge wall. The invisible charge wall can trap droplets and polarize them into charged states. Furthermore, the enrichment of proteins and nanomaterials in the manipulated charged droplets is demonstrated. This strategy provides a potential microfluidic platform with orthogonal functionalities.
Article
Physics, Multidisciplinary
Junichiro Iwasawa, Daiki Nishiguchi, Masaki Sano
Summary: The study found that the polar interactions between Janus colloidal particles at high density can induce a polar orientationally ordered state with features reminiscent of the Vicsek model. Additionally, the research revealed some unique statistical properties of the ordered state, such as the asymmetric relation between polarity and velocity, as well as enhanced rotational diffusion.
PHYSICAL REVIEW RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Ke Su, Su-Xian Yuan, Li-Yuan Wu, Zhao-Lei Liu, Min Zhang, Tong-Bu Lu
Summary: An unprecedented nanoscale Janus Z-scheme heterojunction of CsPbBr3/TiOx is constructed for photocatalytic CO2 reduction. CsPbBr3/TiOx exhibits significantly accelerated interfacial charge transfer compared with CsPbBr3:TiOx counterpart prepared by traditional electrostatic self-assembling. The electron consumption rate of cobalt doped CsPbBr3/TiOx is over 11-fold higher than that of CsPbBr3:TiOx.
Article
Multidisciplinary Sciences
Hongli Guo, Xu Zhang, Gang Lu
Summary: Through first-principles calculations, we predict that moire excitons in twisted Janus heterobilayers can achieve tunable and high-temperature Bose-Einstein condensation (BEC). The properties of exciton condensation and phase transition are analyzed, providing insights for the development of new optoelectronic devices and the realization of high-temperature condensed matter physics.
Article
Mechanics
Dinesh Kumar Sahu, Surajit Dhara
Summary: The effect of electric fields on metal-dielectric Janus particles inducing boojum defect in thin films of a nematic liquid crystal was studied. It was found that boojum Janus particles can self-propel under an ac electric field, and the direction of their motion can be controlled by changing the field amplitude and frequency. This control over particle motility shows promise for tunable transport and microrobotic applications.
Article
Chemistry, Multidisciplinary
Zuochen Wang, Zhisheng Wang, Jiahui Li, Yufeng Wang
Summary: Colloidal particles with surface patches can self-assemble with high directionality but must be reconfigured using external fields. By synthesizing metallodielectric patchy particles and assembling them under an electric field, we have achieved structures directed by patches yet reconfigurable by the field.
Article
Chemistry, Multidisciplinary
Matthew S. G. Feuer, Alejandro R. -P. Montblanch, Mohammed Y. Sayyad, Carola M. Purser, Ying Qin, Evgeny M. Alexeev, Alisson R. Cadore, Barbara L. T. Rosa, James Kerfoot, Elaheh Mostaani, Radoslaw Kaleba, Pranvera Kolari, Jan Kopaczek, Kenji Watanabe, Takashi Taniguchi, Andrea C. Ferrari, Dhiren M. Kara, Sefaattin Tongay, Mete Atature
Summary: Janus transition-metal dichalcogenide monolayers are artificial materials with unique properties, such as long-lived, dipolar excitons and direct-band gap optical transitions. In this study, the specific excitonic origin of Janus WSe S monolayers with narrow optical line widths is identified. The integration of Janus monolayers into vertical heterostructures allows for doping control and the development of optoelectronic devices. These findings have important implications for nanoscale sensing and the advancement of Janus-based technology.
Article
Nanoscience & Nanotechnology
Qing Liu, Shuaishuai Meng, Tingting Zheng, Yaming Liu, Xing Ma, Huanhuan Feng
Summary: Researchers have developed LM Janus micromotors using Gallium- and indium-based liquid metal to address the biotoxicity and biocompatibility issues in potential biomedical applications. They found that the choice of sputtering materials on the metallic surface affects the motors' performance, with self-electrophoresis resulting in faster movement than self-diffusiophoresis. The ability to switch driving mechanisms allows for adaptation to different biochemical application scenarios.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Yanfei Wu, Beibei Shao, Zheheng Song, Yajuan Li, Yatao Zou, Xin Chen, Jiangtao Di, Tao Song, Yusheng Wang, Baoquan Sun
Summary: Moisture-triggered electricity generator (MEG) is a promising candidate for renewable power demand, but its performance is strongly affected by moisture concentration. In this study, a Janus heterojunction MEG device is proposed to harvest ambient moisture and deliver stable electrical output. The device achieves record values of open-circuit voltage, short-circuit current density, and output power density under ambient conditions. The findings provide insights into the design and working mechanism of MEG, which are important for efficient electricity conversion from atmospheric moisture.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Dana Ben-Bassat, Alicia Boymelgreen, Gilad Yossifon
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2015)
Article
Chemistry, Multidisciplinary
Alicia Boymelgreen, Gilad Yossifon
Article
Chemistry, Multidisciplinary
Alicia Boymelgreen, Gilad Yossifon, Touvia Miloh
Article
Physics, Applied
Matan Zehavi, Alicia Boymelgreen, Gilad Yossifon
PHYSICAL REVIEW APPLIED
(2016)
Article
Multidisciplinary Sciences
Alicia M. Boymelgreen, Tov Balli, Touvia Miloh, Gilad Yossifon
NATURE COMMUNICATIONS
(2018)
Article
Physics, Fluids & Plasmas
Alicia Boymelgreen, Gilad Yossifon, Sinwook Park, Touvia Miloh
Article
Mechanics
Alicia M. Boymelgreen, Touvia Miloh
Article
Mechanics
Alicia M. Boymelgreen, Touvia Miloh
Article
Mechanics
Touvia Miloh, Alicia Boymelgreen
Article
Chemistry, Multidisciplinary
Xiaoye Huo, Yue Wu, Alicia Boymelgreen, Gilad Yossifon
Article
Chemistry, Physical
A. M. Boymelgreen, G. Kunti, P. Garcia-Sanchez, A. Ramos, G. Yossifon, T. Miloh
Summary: The study investigates the interaction between active particles and walls to explain discrepancies between experiments and theory. The findings show that the motion direction and frequency dispersion of particles can be controlled by the interaction between ICEP and sDEP. Proximity to walls enhances this interaction and has a significant impact on particle mobility.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Review
Chemistry, Physical
Alicia Boymelgreen, Jarrod Schiffbauer, Boris Khusid, Gilad Yossifon
Summary: The collective motion of synthetic active colloids is a emerging area of research in soft matter physics, which has important implications for fundamental studies and practical applications. Electrokinetic active colloids provide a flexible platform for investigating and modulating collective behavior in active matter.
CURRENT OPINION IN COLLOID & INTERFACE SCIENCE
(2022)
Article
Multidisciplinary Sciences
Preyojon Dey, Terence M. Bradley, Alicia Boymelgreen
Summary: Current studies on the abiotic impacts on Artemia and ecotoxicology often focus on endpoint analysis. This study demonstrates that a mechanistic understanding can be obtained by measuring real-time oxygen consumption in a microfluidic platform. The study shows that different temperatures and salinities significantly alter the duration of hatching stages, metabolic rates, and hatchability.
SCIENTIFIC REPORTS
(2023)
Review
Materials Science, Biomaterials
Vivek Kamat, Preyojon Dey, Dhananjay Bodas, Ajeet Kaushik, Alicia Boymelgreen, Shekhar Bhansali
Summary: Fabricating high-performance nanoparticles with unique properties requires maintaining identical characteristics throughout the processing and application process system. Microfluidic technology provides a unique approach to synthesize nanoparticles with size control, making it suitable for potential biomedical applications. This review discusses various strategies for synthesizing nanoparticles using active microfluidic reactors and explores the challenges and prospects in this field.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
