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Title: Three-dimensional piezoelectric polymer microsystems for vibrational energy harvesting, robotic interfaces and biomedical implants

Journal Article · · Nature Electronics

Piezoelectric microsystems are of use in areas such as mechanical sensing, energy conversion and robotics. The systems typically have a planar structure, but transforming them into complex three-dimensional (3D) frameworks could enhance and extend their various modes of operation. Here, we report a controlled, nonlinear buckling process to convert lithographically defined two-dimensional patterns of electrodes and thin films of piezoelectric polymers into sophisticated 3D piezoelectric microsystems. To illustrate the engineering versatility of the approach, we create more than twenty different 3D geometries. With these structures, we then demonstrate applications in energy harvesting with tailored mechanical properties and root-mean-square voltages ranging from 2 mV to 790 mV, in multifunctional sensors for robotic prosthetic interfaces with improved responsivity (for example, anisotropic responses and sensitivity of 60 mV N-1 for normal force), and in bio-integrated devices with in vivo operational capabilities. We note the 3D geometries, especially those with ultralow stiffnesses or asymmetric layouts, yield unique mechanical attributes and levels of functionality that would be difficult or impossible to achieve with conventional two-dimensional designs.

Research Organization:
Univ. of Illinois at Urbana-Champaign, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Natural Science Foundation of China (NSFC); National Science Foundation (NSF); Ryan Fellowship; Northwestern University International Institute for Nanotechnology
Grant/Contract Number:
FG02-07ER46471
OSTI ID:
1607431
Journal Information:
Nature Electronics, Vol. 2, Issue 1; ISSN 2520-1131
Publisher:
Springer NatureCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 252 works
Citation information provided by
Web of Science

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Cited By (19)

Transformable, Freestanding 3D Mesostructures Based on Transient Materials and Mechanical Interlocking journal July 2019
Micro/Nanoscale 3D Assembly by Rolling, Folding, Curving, and Buckling Approaches journal June 2019
Mechanically‐Guided Structural Designs in Stretchable Inorganic Electronics journal July 2019
Remotely Triggered Assembly of 3D Mesostructures Through Shape‐Memory Effects journal November 2019
Bioinspired Prosthetic Interfaces journal February 2020
Enhancement of piezoelectric vibration energy harvesting with auxetic boosters journal November 2019
The recent advances in self‐powered medical information sensors journal December 2019
Manufacturing of 3D multifunctional microelectronic devices: challenges and opportunities journal June 2019
Metal-hygroscopic polymer conductors that can secrete solders for connections in stretchable devices journal January 2020
Buckling and twisting of advanced materials into morphable 3D mesostructures journal June 2019
Harnessing the interface mechanics of hard films and soft substrates for 3D assembly by controlled buckling journal July 2019
Structures, stabilities and piezoelectric properties of Janus gallium oxides and chalcogenides monolayers journal November 2019
An Inverse Design Method of Buckling-Guided Assembly for Ribbon-Type 3D Structures journal November 2019
A review on piezoelectric fibers and nanowires for energy harvesting journal September 2019
Effect of phase in fast frequency measurements for sensors embedded in robotic systems journal July 2019
Piezoelectric Films Based on Polyethylene Modified by Aluminosilicate Filler journal August 2019
Piezoelastic PVDF/TPU Nanofibrous Composite Membrane: Fabrication and Characterization journal October 2019
Buckling and twisting of advanced materials into morphable 3D mesostructures. text January 2019
Transformable, Freestanding 3D Mesostructures Based on Transient Materials and Mechanical Interlocking journal February 2020

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