Hydrogen-Bubble-Propelled Zinc-Based Microrockets in Strongly Acidic Media
- Creators
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Gao, Wei
- Uygun, Aysegul
- Wang, Joseph
Abstract
Tubular polyaniline (PANI)/Zn microrockets are described that display effective autonomous motion in extreme acidic environments, without any additional chemical fuel. These acid-driven hydrogen-bubble-propelled microrockets have been electrosynthesized using the conical polycarbonate template. The effective propulsion in acidic media reflects the continuous thrust of hydrogen bubbles generated by the spontaneous redox reaction occurring at the inner Zn surface. The propulsion characteristics of PANI/Zn microrockets in different acids and in human serum are described. The observed speed–pH dependence holds promise for sensitive pH measurements in extreme acidic environments. The new microrockets display an ultrafast propulsion (as high as 100 body lengths/s) along with attractive capabilities including guided movement and directed cargo transport. Such acid-driven microtubular rockets offer considerable potential for diverse biomedical and industrial applications.
Additional Information
© 2011 American Chemical Society. Received 18 November 2011. Published online 20 December 2011. Published in print 18 January 2012. This work was supported by the National Science Foundation (CBET 0853375). A.U. thanks the Fulbright Scholarship program and a leave from Suleyman Demirel University. The authors also thank A. Katzenberg, A. Pei, and A. Ponedal for their help.Attached Files
Supplemental Material - ja210874s_si_001__1_.mpg
Supplemental Material - ja210874s_si_001.mpg
Supplemental Material - ja210874s_si_003.mpg
Supplemental Material - ja210874s_si_004.mpg
Supplemental Material - ja210874s_si_005.mpg
Supplemental Material - ja210874s_si_006.mpg
Supplemental Material - ja210874s_si_007.pdf
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Additional details
- Eprint ID
- 84509
- DOI
- 10.1021/ja210874s
- Resolver ID
- CaltechAUTHORS:20180124-143806866
- NSF
- CBET-0853375
- Fulbright Scholarship
- Created
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2018-01-31Created from EPrint's datestamp field
- Updated
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2021-11-15Created from EPrint's last_modified field