Article
Multidisciplinary Sciences
Jintao Tong, Dalei Wang, Ye Liu, Xin Lou, Jiwei Jiang, Bin Dong, Renfeng Dong, Mingcheng Yang
Summary: A fuel-free carbon nitride/polypyrrole nanoparticle-based smart MNM with behavior resembling that of phototactic microorganisms has been reported, capable of moving towards or away from a visible light source in water based on light intensity. The MNM demonstrates complex motion behaviors, such as collective bidirectional phototaxis under uniform illuminations and spinning schooling behavior under nonuniform light, both controllable by visible light energy.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
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
Chemistry, Physical
Tengguo Dong, Menglong Sun, Kan Hu, Qian Wang, Chunhua Lu, Jiahui Kou
Summary: This study proposes a new strategy for the development of photocatalytic technology by combining self-propelled carbon micromotors with photocatalysts, which can enhance photocatalytic performance and have the advantages of simple synthesis and low cost.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Nanoscience & Nanotechnology
Kai Feng, Jiang Gong, Jinping Qu, Ran Niu
Summary: In this study, a new dual-mode-driven micromotor based on foam-like carbon nitride and precipitated Fe3O4 nanoparticles was proposed for rapid reduction of organic pollutants. The micromotor exhibited efficient photocatalytic performance under visible light and versatile motion behavior under the control of external magnetic fields. The study provides a novel method for antibiotics removal in industrial wastewater treatment with magnetic field and light-enhanced performance at a low cost.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Subrata Majhi, Somnath Bhattacharyya
Summary: A numerical study on the diffusiophoresis of a hydrophobic charged colloid driven by an imposed concentration gradient of an electrolyte is made. The study reveals the significant effects of particle hydrophobicity and electrolyte valence on diffusiophoresis.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Robotics
Qing Shi, Junhui Gao, Shengjie Wang, Xiaolong Quan, Guanglu Jia, Qiang Huang, Toshio Fukuda
Summary: A small-sized quadruped robotic rat (SQuRo) was developed, inspired by the movement characteristics of rats, with excellent motion performance and environmental adaptability, as well as the ability to recover from falls.
IEEE TRANSACTIONS ON ROBOTICS
(2022)
Article
Geochemistry & Geophysics
Yuli Sun, Lin Lei, Li Liu, Gangyao Kuang
Summary: Multimodal change detection (MCD) is a challenging topic in remote sensing due to the unavailability of directly comparing multimodal images. This article proposes a structural regression fusion (SRF)-based method to reduce the influence of structural asymmetry and improve image transformation performance in MCD. SRF incorporates fusion into the regression process and yields three types of constraints to perform the fused image transformation. The proposed SRF is verified on six real datasets and outperforms some state-of-the-art methods.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2023)
Article
Mathematics, Applied
Yu Guo, Albert C. J. Luo
Summary: In this paper, the authors obtained the complete bifurcation dynamics from period-3 motions to chaos semi-analytically using the implicit mapping method. They constructed mapping structures of periodic motions through discrete implicit maps and determined analytical bifurcation trees through nonlinear algebraic equations. The stability and bifurcations of periodic motions were achieved through eigenvalue analysis. The complexity of periodic motions was studied by analyzing the variation of harmonic amplitudes. Numerical and analytical solutions were presented to illustrate the complexity, and the results showed the applicability of the proposed methods for other nonlinear dynamical systems.
Article
Neurosciences
Pattarawat Chormai, Yi Pu, Haoyu Hu, Simon E. Fisher, Clyde Francks, Xiang-Zhen Kong
Summary: Lateralization is a fundamental characteristic of many behaviors and the organization of the brain. This large-scale study using multimodal brain imaging and multivariate machine learning has shed new light on the neural correlates of human handedness.
Article
Biotechnology & Applied Microbiology
Marco Vicari, Reza Mirzazadeh, Anna Nilsson, Reza Shariatgorji, Patrik Bjaerterot, Ludvig Larsson, Hower Lee, Mats Nilsson, Julia Foyer, Markus Ekvall, Paulo Czarnewski, Xiaoqun Zhang, Per Svenningsson, Lukas Kaell, Per E. Andren, Joakim Lundeberg
Summary: We present a method that combines histology, mass spectrometry imaging, and spatial transcriptomics to measure mRNA transcripts and low-molecular-weight metabolites simultaneously across tissue regions. The potential of this method is demonstrated using mouse and human brain samples in the context of dopamine and Parkinson's disease.
NATURE BIOTECHNOLOGY
(2023)
Article
Engineering, Environmental
Zhe Zhang, Lu Zhang, Zhihao Huang, Yuxin Xu, Qingqing Zhao, Hongju Wang, Meiqing Shi, Xiangnan Li, Kai Jiang, Dapeng Wu
Summary: In this study, a floating catalytic foam was designed and prepared to enhance the mass transfer in immobilized photocatalysts for wastewater treatment. The floating catalytic foam could float on the water surface and establish a temperature gradient, effectively promoting the diffusion and adsorption of target molecules during the photocatalytic process.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Astronomy & Astrophysics
Hefan Li, Francois Hammer, Carine Babusiaux, Marcel S. Pawlowski, Yanbin Yang, Frederic Arenou, Cuihua Du, Jianling Wang
Summary: Using Gaia Early Data Release 3, researchers estimated the proper motions of 46 dwarf galaxies of the Milky Way, finding that these galaxies are highly concentrated near their pericenters rather than apocenters. A significant number of satellites show orbital poles indicating they orbit along the vast polar structure, with most co-orbiting in a direction shared by the Magellanic Clouds.
ASTROPHYSICAL JOURNAL
(2021)
Article
Astronomy & Astrophysics
Joerg Jaeckel, Wen Yin
Summary: We discuss baryogenesis in scenarios where the Universe is reheated to low temperatures by the decay of long-lived massive particles into energetic SM particles. Optimistic estimates suggest that successful baryogenesis is possible even for low reheating temperatures. The enhancement of the W-boson coupling in an extended SM model can achieve sufficient baryon production.
Article
Nanoscience & Nanotechnology
Maxim R. Sokolov, Konstantin A. Tumbinskiy, Ekaterina A. Varlamova, Alexey A. Averin, Andrey V. Shkolin, Maria A. Kalinina
Summary: Noncovalent integration of MoS2 nanosheets and ZnTCPP through coordination bonding with metal clusters of Zn(OAc)2 was used to synthesize a stable hybrid nanomaterial. It showed high photocatalytic activity in UV-assisted degradation and antibacterial activity.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Astronomy & Astrophysics
Basabendu Barman, Debasish Borah, Rishav Roshan
Summary: In this study, a minimal scenario is proposed to achieve nonthermal leptogenesis and UV freeze-in of dark matter simultaneously, with the inflaton field playing a significant role. By considering different dimensions of operators and coupling with RHNs, it is shown that the observed baryon asymmetry and relic density of dark matter can be explained. The parameter space of this scenario is constrained by relevant phenomenological requirements including sub-eV scale active neutrino masses and their mixing, taking into account both instantaneous and noninstantaneous reheating.
Article
Chemistry, Multidisciplinary
Jianhua Zhang, Abhrajit Laskar, Jiaqi Song, Oleg E. Shklyaev, Fangzhi Mou, Jianguo Guan, Anna C. Balazs, Ayusman Sen
Summary: Through experiments and simulations, this study demonstrates that fuel-free photoactive TiO2 microparticles can form mobile and coherent swarms under UV light. These swarms exhibit rich collective behavior due to multiple propulsion mechanisms, allowing for the reverse manipulation of cargo. This research overcomes three limitations of self-propelled particles, offering potential applications in portable devices and advancements in microfluidics.
Review
Chemistry, Multidisciplinary
Manyi Yang, Xia Guo, Fangzhi Mou, Jianguo Guan
Summary: This review provides an overview of fluorescent micro/nanorobots (MNRs) and highlights their potential applications in biomedicine. The review focuses on the fluorescent mechanisms, materials, and design strategies for integrating MNRs with fluorescence. Moreover, the main challenges and future directions for fluorescent MNRs are summarized.
Article
Green & Sustainable Science & Technology
Yuan Lin, Guimei Huang, Lv Chen, Jianhua Zhang, Lijun Liu
Summary: In this study, WO3 nanofibers were modified by in situ growth of freestanding Ni(OH)(2-x) nanosheets with oxygen vacancies, which facilitated charge separation and CO2 reduction. The introduction of Ni(OH)(2-x) induced a built-in electric field at the interface, driving the photogenerated electrons to Ni(OH)(2-x) and achieving spatial charge separation. Additionally, CO2 adsorbed on Ni(OH)(2-x) exhibited apparent molecular activation.
ADVANCED SUSTAINABLE SYSTEMS
(2023)
Article
Nanoscience & Nanotechnology
Luolin Li, Zheng Yu, Jianfeng Liu, Manyi Yang, Gongpu Shi, Ziqi Feng, Wei Luo, Huiru Ma, Jianguo Guan, Fangzhi Mou
Summary: We propose the development of swarming responsive photonic nanorobots that can collectively perceive and report physicochemical changes in unknown microenvironments, and further guide localized photothermal treatment. These nanorobots can actively navigate in complex environments utilizing their controllable swarming motions, visualize unknown targets by collectively mapping out local abnormal physicochemical conditions, and guide external light irradiation to initiate localized photothermal treatment.
NANO-MICRO LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Lingxia Yu, Manyi Yang, Jianguo Guan, Fangzhi Mou
Summary: This study develops ultrasmall tubular nanomotors with ion-tolerant propulsions and collective behaviors. These nanomotors demonstrate positive superdiffusive photogravitaxis and reversible self-organization into nanoclusters near the substrate under vertical upward UV irradiation. Even in high-electrolyte environments, the nanomotors can concentrate near the substrate and gather into motile nanoclusters. This work opens new possibilities for designing swarming ion-tolerant chemical nanomotors and accelerating their applications in biomedicine and environmental remediation.
Article
Nanoscience & Nanotechnology
Ming You, Fangzhi Mou, Ke Wang, Jianguo Guan
Summary: A tadpole-like flexible microswimmer with a magnetic head and tail is developed using a magnetically assisted in situ polymerization method. The microswimmer achieves efficient movement through undulatory motion generated by the magnetic head and tail. It can be utilized for active sensing and drug delivery.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Jianfeng Liu, Luolin Li, Chuan Cao, Ziqi Feng, Yun Liu, Huiru Ma, Wei Luo, Jianguo Guan, Fangzhi Mou
Summary: This article introduces a multifunctional heater-thermometer nanorobot and its application in precise feedback photothermal hyperthermia delivery. The nanorobots exhibit energetic and controllable swarming motions under a rotating magnetic field, while functioning as motile nanoheaters and nanothermometers. By utilizing their self-reporting photothermochromism as visual feedback, the nanorobots can be quickly deployed to a remote target area and selectively eliminate diseased cells in a specific targeted region.
Article
Materials Science, Multidisciplinary
Zheng Yu, Luolin Li, Fangzhi Mou, Shimin Yu, Di Zhang, Manyi Yang, Qing Zhao, Huiru Ma, Wei Luo, Tianlong Li, Jianguo Guan
Summary: In this article, swarming magnetic photonic-crystal microrobots capable of on-the-fly visual pH detection and self-regulated drug delivery are demonstrated. The microrobots self-organize into large swarms and can perceive local pH changes through their structural colors. When approaching targets with abnormal pH conditions, they can visualize the changes and release drugs accordingly. This work facilitates the development of intelligent micro/nanorobots for active motile-targeting tumor diagnosis and treatment.
Article
Chemistry, Physical
Jianhua Zhang, Wenxin Du, Lv Chen, Yuan Lin, Yunyun Gui, Lijun Liu
Summary: By integrating Pd with WO3 nanomaterials, the d-band center of Pd can be upshifted to optimize the reduction of toxic hexavalent chromium. This integration triggers interfacial electron transfer and enhances the catalytic performance of Pd.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Xia Guo, Yukuan Wang, Fangzhi Mou, Qi Xie, Shu Su, Chuanrui Chen, Jianguo Guan
Summary: This research demonstrates the ability of phototactic micromotor assemblies to manipulate large cargoes in dynamic line formations. By using light and a magnetic field as stimuli, the micromotors can self-organize into groups with emergent behaviors and perform cooperative manipulation of cargoes in various environments.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Yongjie Cheng, Fangzhi Mou, Manyi Yang, Shuyi Liu, Leilei Xu, Ming Luo, Jianguo Guan
Summary: This study reports the long-range hydrodynamic communication among synthetic micromotors, which can trigger the movement of neighboring motors and exhibit leader-follower competitive behavior.
CELL REPORTS PHYSICAL SCIENCE
(2022)