3D Nanofabrication via Chemo-Mechanical Transformation of Nanocrystal/Bulk Heterostructures
- Univ. of Pennsylvania, Philadelphia, PA (United States). Dept. of Electrical and Systems Engineering. Dept. of Chemistry. Dept. of Materials Science and Engineering
- Univ. of Pennsylvania, Philadelphia, PA (United States). Dept. of Materials Science and Engineering
- Univ. of Pennsylvania, Philadelphia, PA (United States). Dept. of Chemistry
- Univ. of Pennsylvania, Philadelphia, PA (United States). Dept. of Electrical and Systems Engineering
- Karlsruhe Inst. of Technology (KIT) (Germany). Karlsruhe Nano Micro Facility. Inst. of Nanotechnology
- Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials
- Univ. of Pennsylvania, Philadelphia, PA (United States). Dept. of Chemistry. Dept. of Materials Science and Engineering
In this paper, planar nanocrystal/bulk heterostructures are transformed into 3D architectures by taking advantage of the different chemical and mechanical properties of nanocrystal and bulk thin films. Nanocrystal/bulk heterostructures are fabricated via bottom-up assembly and top-down fabrication. The nanocrystals are capped by long ligands introduced in their synthesis, and therefore their surfaces are chemically addressable, and their assemblies are mechanically “soft,” in contrast to the bulk films. Chemical modification of the nanocrystal surface, exchanging the long ligands for more compact chemistries, triggers large volume shrinkage of the nanocrystal layer and drives bending of the nanocrystal/bulk heterostructures. Finally, exploiting the differential chemo-mechanical properties of nanocrystal and bulk materials, the scalable fabrication of designed 3D, cell-sized nanocrystal/bulk superstructures is demonstrated, which possess unique functions derived from nanocrystal building blocks.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Catalysis Center for Energy Innovation (CCEI); Brookhaven National Laboratory (BNL), Upton, NY (United States); Univ. of Pennsylvania, Philadelphia, PA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); Chinese Scholarship Counsel (CSC); USDOE
- Grant/Contract Number:
- SC0012704; SC0001004; CMMI-1562884; NSF-561658; DMR-1720530
- OSTI ID:
- 1464114
- Alternate ID(s):
- OSTI ID: 1433271
- Report Number(s):
- BNL-207949-2018-JAAM
- Journal Information:
- Advanced Materials, Vol. 30, Issue 22; ISSN 0935-9648
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Bridging functional nanocomposites to robust macroscale devices
|
journal | June 2019 |
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