Accession Number : ADA616192


Title :   Biotemplated Synthesis of PZT Nanowires


Descriptive Note : Journal article


Corporate Author : PRINCETON UNIV NJ


Personal Author(s) : Cung, Kellye ; Han, Booyeon J ; Nguyen, Thanh D ; Mao, Sheng ; Yeh, Yao-Wen ; Xu, Shiyou ; Naik, Rajesh R ; Poirier, Gerald ; Yao, Nan ; Purohit, Prashant K


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a616192.pdf


Report Date : 25 Nov 2013


Pagination or Media Count : 9


Abstract : Piezoelectric nanowires are an important class of smart materials for next-generation applications including energy harvesting, robotic actuation, and bioMEMS. Lead zirconate titanate (PZT), in particular, has attracted significant attention, owing to its superior electromechanical conversion performance. Yet, the ability to synthesize crystalline PZT nanowires with well-controlled properties remains a challenge. Applications of common nanosynthesis methods to PZT are hampered by issues such as slow kinetics, lack of suitable catalysts, and harsh reaction conditions. Here we report a versatile biomimetic method, in which biotemplates are used to define PZT nanostructures, allowing for rational control over composition and crystallinity. Specifically, stoichiometric PZT nanowires were synthesized using both polysaccharide (alginate) and bacteriophage templates. The wires possessed measured piezoelectric constants of up to 132 pm/V after poling, among the highest reported for PZT nanomaterials. Further, integrated devices can generate up to 0.820 W/cm2 of power. These results suggest that biotemplated piezoelectric nanowires are attractive candidates for stimuli-responsive nanosensors, adaptive nanoactuators, and nanoscale energy harvesters.


Descriptors :   *BIOSYNTHESIS , *LEAD ZIRCONATE TITANATES , *NANOWIRES , BIOMECHANICS , BIOMIMETICS , ENERGY HARVESTING , NANOMATERIALS , PIEZOELECTRIC MATERIALS , SYNTHESIS(CHEMISTRY)


Subject Categories : Biochemistry
      Inorganic Chemistry
      Electrical and Electronic Equipment
      Bionics


Distribution Statement : APPROVED FOR PUBLIC RELEASE