Universal Mechanical Polycomputation in Granular Matter

被引:0
|
作者
Parsa, Atoosa [1 ]
Witthaus, Sven [2 ]
Pashine, Nidhi [2 ]
O'Hern, Corey S. [2 ]
Kramer-Bottiglio, Rebecca [2 ]
Bongard, Josh [1 ]
机构
[1] Univ Vermont, Burlington, VT 05405 USA
[2] Yale Univ, New Haven, CT 06520 USA
来源
PROCEEDINGS OF THE 2023 GENETIC AND EVOLUTIONARY COMPUTATION CONFERENCE, GECCO 2023 | 2023年
基金
美国国家科学基金会;
关键词
Mechanical Computing; Granular Metamaterials; Unconventional Computing;
D O I
10.1145/3583131.3590520
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
Unconventional computing devices are increasingly of interest as they can operate in environments hostile to silicon-based electronics, or compute in ways that traditional electronics cannot. Mechanical computers, wherein information processing is a material property emerging from the interaction of components with the environment, are one such class of devices. This information processing can be manifested in various physical substrates, one of which is granular matter. In a granular assembly, vibration can be treated as the information-bearing mode. This can be exploited to realize "polycomputing": materials can be evolved such that a single grain within them can report the result of multiple logical operations simultaneously at different frequencies, without recourse to quantum effects. Here, we demonstrate the evolution of a material in which one grain acts simultaneously as two different NAND gates at two different frequencies. NAND gates are of interest as any logical operations can be built from them. Moreover, they are nonlinear thus demonstrating a step toward general-purpose, computationally dense mechanical computers. Polycomputation was found to be distributed across each evolved material, suggesting the material's robustness. With recent advances in material sciences, hardware realization of these materials may eventually provide devices that challenge the computational density of traditional computers.
引用
收藏
页码:193 / 201
页数:9
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