期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 105, 期 48, 页码 18675-18680出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.0807476105
关键词
flexible electronics; stretchable electronics; semiconductor nanomaterials; plastic electronics; buckling mechanics
资金
- National Science Foundation [ECCS-0824129]
- U.S. Department of Energy, Division of Materials Sciences through the Materials Research Laboratory [DE-FG02-07ER46471]
- Center for Microanalysis of Materials [DE-FG02-07ER46453]
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [824129] Funding Source: National Science Foundation
Electronic systems that offer elastic mechanical responses to high-strain deformations are of growing interest because of their ability to enable new biomedical devices and other applications whose requirements are impossible to satisfy with conventional wafer-based technologies or even with those that offer simple bendability. This article introduces materials and mechanical design strategies for classes of electronic circuits that offer extremely high stretchability, enabling them to accommodate even demanding configurations such as corkscrew twists with tight pitch (e.g., 90 degrees in approximate to 1 cm) and linear stretching to rubber-band levels of strain (e.g., up to approximate to 140%). The use of single crystalline silicon nanomaterials for the semiconductor provides performance in stretchable complementary metal-oxide-semiconductor (CMOS) integrated circuits approaching that of conventional devices with comparable feature sizes formed on silicon wafers. Comprehensive theoretical studies of the mechanics reveal the way in which the structural designs enable these extreme mechanical properties without fracturing the intrinsically brittle active materials or even inducing significant changes in their electrical properties. The results, as demonstrated through electrical measurements of arrays of transistors, CMOS inverters, ring oscillators, and differential amplifiers, suggest a valuable route to high-performance stretchable electronics.
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