The swimming locomotion of fish involves a complex interplay between deformable body and induced flow in the surrounding fluid. While innovative robotic devices, inspired by physicomechanical designs evolved fish, have been created for underwater propulsion large swimmers, scaling such powerful into micro‐/nanoscale remains challenging. Here, magnetically propelled fish‐like artificial nanoswimmer is demonstrated that emulates caudal fin mechanism displayed fish. To mimic periodic shape...

Abstract Nature provides a successful evolutionary direction for single‐celled organisms to solve complex problems and complete survival tasks – pseudopodium. Amoeba, unicellular protozoan, can produce temporary pseudopods in any by controlling the directional flow of protoplasm perform important life activities such as environmental sensing, motility, predation, excretion. However, creating robotic systems with pseudopodia emulate adaptability tasking capabilities natural amoeba or amoeboid...

The hydrodynamic behavior and propulsion mechanism of self-propelled micromotors are studied theoretically experimentally. A model to describe bubble growth detachment is proposed investigate the a conical tubular catalytic micromotor considering geometric asymmetry buoyancy force. force caused by surface against fluid driving for motion. Also, plays primary role in detachment. effect geometrical parameters on velocity drag presented. radius ratio investigated different radii determine its...

Motion of catalytic micro/nano-motors with various geometries is mainly determined by the drag force and propulsion acting on motors as they move in low Reynolds number flows. A unified solution along coefficient for all circular cross-sectional types derived. The effect geometric parameters a micro/nano-motor, such semi-cone angle θ, ratio ξ length to larger radius, identified. Results provided this work are useful optimizing design fabrication micro/nano-motors, which can be potentially...

Micromotors hold great promise for extensive practical applications such as those in biomedical domains and reservoir exploration. However, insufficient propulsion of the micromotor limits its application crossing biological barriers breaking boundaries. In this study, an ultrafast microbullet based on laser cavitation that can utilize energy a bubble realize own hurtling motion is reported. The experiments are performed using high-speed photography. A boundary integral method adopted to...

Space debris is considered an increasingly serious threat to on‐orbit spacecrafts. There are several potential solutions this problem, including active removal. Flexible robots have shown promising adaptability and dexterity in soft manipulation owing their inherent compliance. This compliance allows them interact safely efficiently during space missions such as Herein, inspired by the bistable structure energy‐release mechanism of Venus flytrap, a origami‐based gripper developed. The...

Swimming microrobot energized by magnetic fields exhibits remotely propulsion and modulation in complex biological experiment with high precision. However, achieving environment adaptability multiple tasking capability one configuration is still challenging. Here, we present a strategy that use oriented magnetized Janus spheres to assemble the microdimer robots two distribution configurations of head-to-side (HTS-config) head-to-head (HTH-config), performance tasks through multimode...

Recent years have witnessed a surge in the application of microrobots within medical sector, with hydrogel standing out due to their distinctive advantages. These microrobots, characterized by exceptional biocompatibility, adjustable physico-mechanical attributes, and acute sensitivity biological environments, emerged as pivotal tools advancing applications such targeted drug delivery, wound healing enhancement, bio-imaging, precise surgical interventions. The capability navigate perform...

In this study, we propose a highly efficient robot platform for pollutant adsorption. This system consists of flapping-wing micro aircraft (FWMA) long-distance transportation and delivery cost-effective multifunctional Janus microrobots purification. The air vehicle can hover 11.3 km with flapping frequency approximately 15 Hz, fly forward up to 31.6 km/h, drop targeted destination. microrobot, which is composed silica microsphere, nickel layer, hydrophobic used absorb the oil process...

Self-propelled catalytic microrockets, capable of converting energy into movement and forces, are great interest to address environmental problems, for example, remediation monitoring pollutants. One typical application is clean water efficiently. In this work, a self-propelled polymer-based microrocket, which can be used remove organic pollutants in water, developed. The effect the concentration hydrogen peroxide fuel on velocity chemical powered microrocket studied. motion microrockets at...

A sonochemical reactor was developed to study the ultrasound-assisted cyanide extraction of gold from ore at low temperature. The effects ultrasound on leaching in temperature and conventional conditions were investigated. At 10 °C, increased rate by 0.6%-0.8% reduced content tailings 0.28 g/t concentrate tailings, respectively. 25 obtained a 0.1% higher compared with extraction, unit consumption NaCN reduction 15%. analysis kinetic model also demonstrated that sonication indeed improved...

Acute myeloid leukemia (AML) is a highly aggressive hematological malignancy characterized by extensive genetic abnormalities that might affect the prognosis and provide potential drug targets for treatment. Reprogramming of lipid metabolism plays important roles in tumorigenesis progression has been newly recognized new hallmark malignancy, some related molecules signal pathways could be prognostic biomarkers therapeutic cancer However, clinical value reprogramming AML not systematically...

Liquid viscosity is a vital metric in microelectromechanical systems (MEMS) and nanoelectromechanical (NEMS). The application of conventional measurements micro/nano scale complex not economically viable. Self-propelled catalytic microrockets, capable converting energy into movement forces, have shown considerable promise for diverse practical applications MEMS/NEMS. In this work, novel micromotor-based viscometer developed. relation between the velocity microrocket solution experimentally...

Understanding the contact behavior of a microelectromechanical system (MEMS) switch is great importance to reach high-reliability level for micro-switch applications. The deformation occurring at many a-spots produced by mechanical asperities can be elastic, elastic–plastic, fully plastic or any combination three types and has strong effect on resistance. This work presents an electrical resistance model rough MEMS switch. A dimensionless parameter k, which function electron mean free path...

Highly effective contrast enhancer that processes targeting ability and maneuverability is in great demand clinics for accurate diagnosis. Here a new strategy using deformable manipulatable magnetic microswarm as MRI developed. Magnetic aggregated from nanoparticles inherently they can be controlled with multiple programmable deform abilities. It demonstrated spatiotemporal programming field enables the not only to exhibit both ribbon-like round-like behaviours but also adaptively navigate...

Space Debris Capture Robotics Flexible robots have shown promising adaptability and dexterity in space capture owing to their inherent compliance. In article number 2200468, Yongchang Zhang colleagues present a flytrap-inspired bistable origami-based gripper for rapid active debris removal. The proposed can realize ultrafast effective of models, it exhibits good with targets having complex shapes sizes.

While a large amount of attention has been paid to investigating the effects various factors (e.g., solvent and asphaltene molecular structure) on adsorption, effect salinity, particularly brine water, not systematically studied at atomistic level despite ubiquitous presence salt in crude oil processing. In this work, adsorption behaviors model oil/brine interface were investigated using dynamics simulations. It was found that addition greatly enhances kinetics systems with small droplet,...