Results 11 to 20 of about 474 (186)
Small, Volume 22, Issue 39, 13 July 2026.ABSTRACT The rapid expansion of the Internet of Things (IoT) and wearable electronics necessitates sustainable power sources to replace the limited electrochemical battery. While mechanical energy harvesting offers a promising solution, traditional harvesters face challenges of irregular and low−frequency environmental sources. This review presents the
Yongbin Han +2 more
wiley +1 more source
Development of Heat Engines Powered by Twisted and Coiled Polymer Fiber Actuators
Advanced Materials Technologies, Volume 11, Issue 8, 17 April 2026.Continuously rotating engines driven by thermally responsive actuating materials can turn waste heat into useful energy. For the first time heat engines operated by twisted and coiled polymer fiber actuators are demonstrated with engine design guided by two simple analytical models.
Geoffrey M. Spinks +2 more
wiley +1 more source
Molecular Photogearing for Controlling Rotary Motion at the Nanoscale
ChemPlusChem, Volume 91, Issue 4, April 2026.Molecular gears capable of controlling and transmitting rotary motion at the nanoscale are indispensable for the construction of artificial molecular machines. In this concept, we discuss how molecular photogears featuring a propeller‐shaped motif attached to a light‐driven molecular motor offer new possibilities to perform these tasks with better ...
Enrique M. Arpa, Bo Durbeej
wiley +1 more source
Directional Bias in Molecular Photogearing Evidenced by LED‐Coupled Chiral Cryo‐HPLC
Angewandte Chemie, Volume 136, Issue 38, September 16, 2024.Significant directionality bias for the coupled rotations of a light‐powered molecular photogear is evidenced by analysis of its enantiomeric states. Using a custom designed LED‐coupled chiral cryo‐HPLC setup, the sense of directionality of coupled double‐ and single bond rotations during photogearing could be elucidated directly.
Frederik Gnannt +4 more
wiley +2 more sources
Hydraulic In Vitro Characterization of MR‐Conditional Blood Pumps
Artificial Organs, Volume 50, Issue 3, Page 393-403, March 2026.Cardiac surgery in neonates requires close placement of cardiopulmonary bypass machines due to limited blood volume, complicating MR compatibility. This study introduces three MR‐conditional blood pump prototypes. None interfered with MRI imaging, though RF‐related sensor effects remain untested.
Dominik T. Schulte +6 more
wiley +1 more source
Growth of Subsurface Fatigue Fractures in Large‐Size Bevel Gears
Fatigue &Fracture of Engineering Materials &Structures, Volume 49, Issue 2, Page 640-652, February 2026.ABSTRACT Large‐size bevel gears are commonly used in marine industry for the applications of propulsion, such as azimuth thrusters. The gears are typically designed for specific use, as they are directly transferring power from one component to another.
Erkka Pentti Kasper Virtanen +4 more
wiley +1 more source
Bioinspired Light‐Driven Organic Rotary Molecular Systems
ChemistryEurope, Volume 4, Issue 1, January 2026.This review explores the evolution of bioinspired light‐driven rotary molecular systems (RMSs), highlighting the integration of natural chromophore‐based fragments to enhance quantum efficiency, photostability, and biocompatibility. Key strategies to optimize photochemical performance and broaden functional applications are discussed, providing a ...
Lidia Hortigüela, Sara P. Morcillo
wiley +1 more source
Study on the Meshing Characteristic of Quadruple-arc Spiral Bevel Gear
Jixie chuandong, 2017 The quadruple-arc spiral bevel gear is a new type of spiral bevel gear which is obtained by apply the quadruple-arc tooth on the bevel gear. The meshing points of quadruple-arc spiral bevel gear are increased compare with double-arc spiral bevel gear,and
Ren Zhongyi +3 more
doaj
Spiral Bevel Gears: Review on Dynamics.
MECHANICALBevel gears are a type of gears commonly used in various applications, especially where a change in the direction of power transmission is needed. The teeth on bevel gears are vulnerable to various defects that can affect their performance, such as pitting, wear, and chipping.
Farhad S. Samani +4 more
openaire +1 more source
Low‐Complexity Robotic Device for Magnetic Resonance Imaging‐Guided Needle Biopsy
The International Journal of Medical Robotics and Computer Assisted Surgery, Volume 21, Issue 6, December 2025.ABSTRACT Background This work presents a low‐complexity robotic device for needle‐to‐target alignment designed to streamline Magnetic Resonance Imaging (MRI)‐guided biopsy procedures while maintaining physician control over insertion. Methods The robotic device was designed with a rigid frame incorporating two linear degrees of freedom for the in‐plane
Anastasia Antoniou +8 more
wiley +1 more source