Mechanical integrated circuit materials

Hélou, Charles; Großmann, Benjamin; Tabor, Christopher E.; Buskohl, Philip R.; Harne, Ryan L.

doi:10.1038/s41586-022-05004-5

Cited by 72 publications

(61 citation statements)

References 35 publications

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“…As a source of inspiration, an octopus has more than half of its neurons distributed in its arms. Although mimicking the sophistication of an octopus is incredibly challenging, there are some examples of simple logic being done in soft materials without conventional logic devices. − While in-sensor computing using intelligent matter is still in its infancy, it is an area of opportunity for truly intelligent materials that can process information locally and respond appropriately.…”

Section: Discussionmentioning

confidence: 99%

Technology Roadmap for Flexible Sensors

et al. 2023

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Humans rely increasingly on sensors to address grand challenges and to improve quality of life in the era of digitalization and big data. For ubiquitous sensing, flexible sensors are developed to overcome the limitations of conventional rigid counterparts. Despite rapid advancement in bench-side research over the last decade, the market adoption of flexible sensors remains limited. To ease and to expedite their deployment, here, we identify bottlenecks hindering the maturation of flexible sensors and propose promising solutions. We first analyze challenges in achieving satisfactory sensing performance for real-world applications and then summarize issues in compatible sensor-biology interfaces, followed by brief discussions on powering and connecting sensor networks. Issues en route to commercialization and for sustainable growth of the sector are also analyzed, highlighting environmental concerns and emphasizing nontechnical issues such as business, regulatory, and ethical considerations. Additionally, we look at future intelligent flexible sensors. In proposing a comprehensive roadmap, we hope to steer research efforts towards common goals and to guide coordinated development strategies from disparate communities. Through such collaborative efforts, scientific breakthroughs can be made sooner and capitalized for the betterment of humanity.

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Section: Discussionmentioning

confidence: 99%

Technology Roadmap for Flexible Sensors

et al. 2023

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“…Information storage in volatile system is an urgent problem to be solved. Since the non-volatile system does not need the input of external energy to maintain the information state, the combination of the volatile system and the non-volatile system 43,44 can be considered to make up the disadvantage of the volatile system in information storage. Damping and other losses may limit the information transfer and the overall scale of mechanical computing, thus it is worth paying attention to maintain high transmission e ciency of energy in the process of mechanical computing.…”

Section: Discussionmentioning

confidence: 99%

Self-powered non-reciprocal phononic logic gates

Zhang

Tan

Wang

et al. 2022

Preprint

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Mechanical computing provides an information processing method adapting and interacting with the environment via living materials. As in electronic computing, power supply in mechanical computing is still the challenge. Designing self-powered logic gates can expand application scenarios of mechanical computing for environmental interaction. Here we formulate a framework of self-powered phononic logic gates as the basis for mechanical computing of the integrated acoustic circuit. Via tuning non-reciprocal bands, resonant band and obstacle band of a topologically imbalanced graded phononic crystal that breaks the spatial inversion symmetry, complete seven Boolean logic gates are realized on one metamaterial. The input of the logic gate, Lamb wave, is converted to the electric signal as the self-powered output by combination of the superior evanescent effect of the defect mode and the positive piezoelectric effect. An exemplify real-time heart rate monitoring powered by the graded phononic crystal is demonstrated for high-density energy conversion. The self-powered non-reciprocal phononic logic gates can be implemented on any length scale and broad external conditions.

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“…We combine such beam counters to realize metamaterials which exhibit more complex forms of sequential information processing than counting, including the detection of compression cycles of multiple amplitudes, as well as their sequential order. Together, these establish a general platform for realizing targeted multi-step path- ways in metamaterials and open a route towards sequential information processing in materia [19][20][21].…”

mentioning

confidence: 93%

Counting and Sequential Information Processing in Mechanical Metamaterials

Kwakernaak¹,

Hecke²

2023

Preprint

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Materials with an irreversible response to cyclic driving exhibit an evolving internal state which, in principle, encodes information on the driving history. Here we realize irreversible metamaterials that count mechanical driving cycles and store the result into easily interpretable internal states. We extend these designs to aperiodic metamaterials which are sensitive to the order of different driving magnitudes, and realize 'lock and key' metamaterials that only reach a specific state for a given target driving sequence. Our strategy is robust, scalable and extendable, and opens new routes towards smart sensing, soft robotics and mechanical information processing.

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Mechanical integrated circuit materials

Cited by 72 publications

References 35 publications

Technology Roadmap for Flexible Sensors

Technology Roadmap for Flexible Sensors

Self-powered non-reciprocal phononic logic gates

Counting and Sequential Information Processing in Mechanical Metamaterials

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