Origins of homochirality: a simulation by electrical circuit

Jun Park; C. W. Cheng; David B. Cline; Y. Liu; H. So; Huijuan Wang

doi:10.1117/12.218648

8 September 1995 Origins of homochirality: a simulation by electrical circuit

Jun Park, C. W. Cheng, David B. Cline, Y. Liu, H. So, Huijuan Wang

Proceedings Volume 2551, Photoelectronic Detectors, Cameras, and Systems; (1995) https://doi.org/10.1117/12.218648
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

Chiral asymmetry is apparent in almost all living organisms on earth. However, the origins of chirality are unknown. One proposed theory of chiral asymmetry is by a symmetry-breaking transition such as the explosion of a supernova emitting neutrinos into the earth's biosphere during the prebiotic era. The discovery of weak neutral currents reinforces this theory. We present a simulation of this thoery by an electrical circuit that models the bifurcation equation of the chiral symmetry breaking process. There are three components that constitute this circuit: chiral circuit, sawtooth wave generator, and noise generator. The solution to the chiral circuit, which is the core of the hardware, generates the bifurcation equation. The sawtooth wave generator controls the bifurcation point (critical point), and the noise generator gives the system randomness. We included an adjustable bias voltage and saw a tendency to favor one symmetry over another (D or L) with randomness generated by noise.

Citation Download Citation

Jun Park, C. W. Cheng, David B. Cline, Y. Liu, H. So, and Huijuan Wang "Origins of homochirality: a simulation by electrical circuit", Proc. SPIE 2551, Photoelectronic Detectors, Cameras, and Systems, (8 September 1995); https://doi.org/10.1117/12.218648

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