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Getting the Lead Out:Biomolecular Crystals as Low-Cost,High-Performance Piezoelectric Components

Accounts of Materials Research 2022年第8期3卷 782-784页

作者： sarah guerin SSPC The Science Foundation Ireland Research Centre for Pharmaceuticals and Department of PhysicsBernal InstituteUniversity of LimerickLimerick V94 T9PXIreland

INTRODUCTION There are billions of piezoelectric sensors globally in our vehicles,consumer electronics,medical devices,advanced scientific equipment,fuel gauges,and structural health monitoring *** vast majority of these sensors contain the perovskite lead zirconium titanate(PZT).It is estimated that there is 100 g of PZT distributed across a variety of integrated sensors in every one of the 1.4 billion cars on our *** requires toxic lead oxide(PbO)during its synthesis and leaches lead into water supplies at end-of-life ***-free alternatives are a large field of research,yet the most-touted candidates,which are also ceramic materials containing elements such as niobium,bismuth,and barium,are even more damaging to the environment(Figure 1).

关键词： Figure Crystal ceramic

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Modulating vectored non-covalent interactions for layered assembly with engineerable properties

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Bio-Design and Manufacturing 2022年第3期5卷 529-539页

作者： Jiahao Zhang sarah guerin Haoran Wu Bin Xue Yi Cao Syed A.M.Tofail Yancheng Wang Damien Thompson Wei Wang Kai Tao Deqing Mei Ehud Gazit State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical EngineeringZhejiang UniversityHangzhou 310027China Future Science Research Institute Hangzhou Global Scientific and Technological Innovation CenterZhejiang UniversityHangzhou 311200China Department of Physics and Bernal Institute University of LimerickCastletroyCo.LimerickLimerick V94T9PXIreland National Laboratory of Solid State Microstructure Department of PhysicsNanjing UniversityNanjing 210093China Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province School of Mechanical EngineeringZhejiang UniversityHangzhou 310027China School of Molecular Cell Biology and Biotechnology George S.Wise Faculty of Life SciencesTel Aviv University6997801 Tel AvivIsrael Department of Materials Science and Engineering Iby and Aladar Fleischman Faculty of EngineeringTel Aviv University6997801 Tel AvivIsrael

Vectored non-covalent interactions—mainly hydrogen bonding and aromatic interactions—extensively contribute to(bio)-organic self-assembling processes and significantly impact the physicochemical properties of the associated ***,vectored non-covalent interaction-driven assembly occursmainly along one-dimensional(1D)or three-dimensional(3D)directions,and a two-dimensional(2D)orientation,especially that of multilayered,graphene-like assembly,has been reported *** this present research,by introducing amino,hydroxyl,and phenyl moieties to the triazine skeleton,supramolecular layered assembly is achieved by vectored non-covalent *** planar hydrogen bonding network results in high stability,with a thermal sustainability of up to about 330°C and a Young’s modulus of up to about 40 *** introducing wrinkles by biased hydrogen bonding or aromatic interactions to disturb the planar organization,the stability ***,the intertwined aromatic interactions prompt a red edge excitation shift effect inside the assemblies,inducing broad-spectrum fluorescence covering nearly the entire visible light region(400–650 nm).We show that bionic,superhydrophobic,pillar-like arrays with contact angles of up to about 170°can be engineered by aromatic interactions using a physical vapor deposition approach,which cannot be realized through hydrogen *** findings show the feasibility of 2D assembly with engineerable properties by modulating vectored non-covalent interactions.

关键词： Vectored non-covalent interactions Layered assembly Supramolecular graphene Engineerable properties Physical vapor deposition

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