With the rapid development of industry, actuation systems in robotics, automobiles, medical devices, and other fields requirecomplex multi-dimensional movements in a compact space, such as the joint bending of micro-robots, the 360-degree rotation ofmechanical eyeballs, and nano-movement in the field of biological cells [1-3]. The traditional actuation systems utilize several singledegree-of-freedom (DOF) motors stacked together to achieve multi-dimensional motion, which results in two critical issues [4,5]. Thecoordination control of multiple single-DOF motors tvpically requires elaborate mechanical. transmission devices, which can signifcantly enlarge the system size, Furthermore, these transmissions introduce friction and alignment issues that lead to increased errors intransmission accuracy and positioning precision. The multi-DOF motor that achieves multi- dimensional motion through a single motorcan eliminate the need for complex connection mechanisms employed in the combination of multiple single-DOF motors. "This

High performance relaxor ferroelectric textured ceramics for electrocaloric refrigeration

Electmnic Materials Research Laboratory(Key Lab of Education Ministry), StateKey Laboratory for Mechanical Behaviorof Materials and School of ElectrnicScience and Engineering, Xian JiaotongUniversity, Xi'an, China

ABSTRACT:Piezocatalysis is an emerging catalytic method that efcientlyharnesses mechanical energy from the environment and converts it into electricalenergy to drive chemical reactions. Graphitic carbon nitride (CN), as anonmetallic piezocatalyst, offers significant cost advantages and environmentafriendliness. However, enhancing the catalytic efciency of pristine CN ishindered by its weak adsorption ability and piezoelectric response. To overcomethese challenges, this study introduces dicarboxylic acid as a precursor for CNsynthesis, resulting in carbon-rich CN through a self-assembly process thatenables precise control over the C/N ratio at the molecular level. Compared topristine CN, carbon-rich CN exhibits enhanced cationic substrate adsorptiondue to altered zeta potential and an improved piezoelectric response stemmingfrom reduced structural symmetry, These dual enhancements facilitate strongel3substrate-catalyst interactions and accelerate substrate decomposition, therebytripling the piezocatalytic activity of CN. 'This research introduces a novel approach for designing eficient and environmentally friendly piezocatalysts while contributing to a deeper understanding of piezocatalytic mechanisms.

Enhancing piezoelectric properties of BiScO:-PbTiOs ceramics via-incorporation of Bi(Zn1/2Ti1/2)0s with high spontaneous polarization

Electronic Materials Research Laboratory Key Laboratory of the Minislry ofEducation &k nterational Center for Dielecric Research, school ofElectronic andInformation Engineering,&i'an Jiaotong University, Xi'an,710049, China

Performance and mechanism of multi-method driven piezocatalysis onPNN-PT based catalysts

Bismuth titanate microplates with tunable oxygen vacancies forpiezocatalytic hydrogen peroxide production

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