TECH FRONT Big Lathe Chuck Half Pg Is Ad M.E._Layout 1 2/23/13 4:05 PM Page 1
without external energy inputs, amplification or computer mediation. Their research, “Achieving synchronization with active hy- brid materials: Coupling self-oscillating gels and piezoelectric
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[PZ] films,” appeared online this June in the journal Scientific Reports, published by Nature. The studies combine Balazs’ research in Belousov-Zhabotinsky (BZ) gels, a substance that oscillates in the absence of external stimuli, and Levitan’s ex- pertise in computational modeling and oscillator-based computing systems. By working with Victor Yashin, lead author on the paper, the researchers developed design rules for creating a hybrid “BZ-PZ” material. “The BZ reaction drives the periodic oxidation and reduction of a metal cat- alyst that is anchored to the gel; this, in turn, makes the gel swell and shrink. We put a thin piezoelectric [PZ] cantile- ver over the gel so that when the PZ is bent by the oscillating gel, it generates an electric potential [voltage]. Con- versely, an electric potential applied to the PZ cantilever causes it to bend,” said Balazs. “So, when a single BZ-PZ unit is wired to another such unit, the expansion of the oscillating BZ gel in the first unit deflects the piezoelectric cantilever.” A resulting ‘seesaw-like’ oscillation permits communication and an exchange of information between the units.
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AdvancedManufacturing.org | September 2015
Multiple BZ-PZ units can be con- nected, allowing complicated patterns of oscillation to be generated and stored. These different oscillatory patterns form a type of ‘memory,’ allowing the material to be used for computation.
Tech Front welcomes your manufacturing research-related news releases: Please email them to Tech Front editor Michael Anderson at
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SME’s authoritative peer-reviewed research journals, Journal of Manufacturing Processes, Journal of Manufacturing Systems, and Manufacturing Letters, and technical papers may be reached via
www.sme.org/publications. The journals welcome submissions: Information available at
www.sciencedirect.com/sme.
WRHLIG OKODN
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