Results 91 to 100 of about 91,774 (266)
Advanced Materials, EarlyView.ABSTRACT Microneedle arrays (MNAs) is a rapidly emerging technology with broad biomedical applications in drug delivery and biosensing. With sub‐millimeter dimensions and periodicity, MNAs possess geometries nearly ideal for biomedical devices operating within the terahertz (THz) spectral window.
Sang Hyun Lee +6 more
wiley +1 more source
Jixie chuandong, 2013 A rotating disk cavity-the topology structure of simplified aero-engines bearing chamber is employed to analyze the formation and movement characteristics of oil film.Considering oil droplets gravity and air resistance,the oil droplet movement equitation,
万然 +4 more
doaj
Properties of Elasto-Hydrodynamic Oil Film in Meshing of Harmonic Drive Gears. [PDF]
Materials (Basel), 2021 Kalina A +4 more
europepmc +1 more source
Miniature Soft Robot With Magnetically Reprogrammable Surgical Functions
Advanced Materials, EarlyView.Miniature soft robots have great prospects to revolutionize minimally invasive treatments. Here we present a miniature soft robot, which can be reprogrammed to perform five surgical functionalities with six‐degrees‐of‐freedom motions. This soft robot can prospectively make minimally invasive surgery considerably safer and painless, and enable ...
Chelsea Shan Xian Ng +4 more
wiley +1 more source
Study on the leakage mechanism of the valve plate pair of internal curve hydraulic motor
Advances in Mechanical EngineeringThe leakage of the valve plate pair of the internal curve hydraulic motor significantly affects its volumetric efficiency and machine performance; however, its leakage mechanism is unclear.
Wei Ma +5 more
doaj +1 more source
Programming of Complex Magnetic Profiles Enforced by 4D Printed Magnetic LCE Actuators
Advanced Materials, EarlyView.A 4D printing‐enabled magnetic programming strategy is introduced in which thermally actuated liquid crystal elastomers are magnetized in their target shape to encode complex three‐dimensional magnetic profiles. The resulting actuators achieve multistate shape morphing and programmable locomotion under low magnetic fields, without requiring specialized
Erick R. Espíndola‐Pérez +5 more
wiley +1 more source
Highly Entangled Bottlebrush Polymer Networks
Advanced Materials, EarlyView.Bottlebrush polymers are difficult to entangle, enabling ultrasoft yet brittle networks. We report highly entangled bottlebrush elastomers that remain ultrasoft (∼1 kPa) yet stretch to ∼1800% and exhibit exceptional fatigue resistance. Their intrinsic fatigue strength—fatigue threshold normalized by modulus—surpasses that of highly entangled linear ...
Myoeum Kim +3 more
wiley +1 more source
Advanced Materials, EarlyView.Field‐programmed anisotropy imparts material‐level intelligence to soft composites. Magnetic torque dynamics drive magneto‐piezoelectric nanowires from random dispersion into deterministic axial alignment. The resulting hierarchical percolation networks confine electromechanical coupling to specific axes and intrinsically decouple superposed force ...
Yubin Kim +9 more
wiley +1 more source
Load Carrying Capacity Analysis of Helicoidal Surface Thrust Bearing
Jixie chuandong, 2018 The different structural helicoidal surface thrust bearing lubrication models is built and calculated with FLUENT to analyze the effects of the thickness of the oil film,pitch of the helicoidal surface and angular speed on load capacity of the thrust ...
Zhang Wentao +2 more
doaj
MachinesNonlinear vibration phenomena, such as oil whirl and oil whip, are common indicators of oil film instability in hydrodynamic bearings and are key signs of potential faults in rotating machinery.
Yang Chen +4 more
doaj +1 more source