Origami structures provide functional advantages to rigid electronics through geometric transformations.However,the transformations involved in folding and deployment cause stress concentration on flexure hinges of or...Origami structures provide functional advantages to rigid electronics through geometric transformations.However,the transformations involved in folding and deployment cause stress concentration on flexure hinges of origami structure,triggering electronic malfunction.Here,we report origami electronics based on a fiber-reinforced electronic composite.A thin PEDOT:PSS-based electronic composite minimizes stress during folding without electrode damage.Nylon is embedded in this foldable composite and,despite being thin and flexible for folding,provides high tensile resistance to prevent plastic deformation and tearing under tension.This strategy enables the creation of flexure hinges for origami electronics that maintain mechanical and electrical stability under repeated transformations.Origami electronics that integrate the high-durability composite can be used in display applications supporting 25-fold compression with the Flasher origami structure and 2D-to-3D deployment with the Kresling origami structure.The ability of origami electronics to withstand bending and tensile stress enables shape-reconfigurable displays requiring repeated reconfiguration across multiple hinges.展开更多
Bioelectronic implants in the deep brain provide the opportunity to monitor deep brain activity with potential applications in disease diagnostics and treatment.However,mechanical mismatch between a probe and brain ti...Bioelectronic implants in the deep brain provide the opportunity to monitor deep brain activity with potential applications in disease diagnostics and treatment.However,mechanical mismatch between a probe and brain tissue can cause surgical trauma in the brain and limit chronic probe-based monitoring,leading to performance degradation.Here,we report a transient shuttle-based probe consisting of a PVA and a mesh-type probe.A rigid shuttle based on PVA implants an ultrathin mesh probe in the target deep brain without a tangle,while creating both a sharp edge for facile penetration into the brain and an anti-friction layer between the probe and brain tissue through dissolving its surface.The capability to shuttle dissolved materials can exclude the retracted process of the shuttle in the brain.Complete dissolution of the shuttle provides a dramatic decrease(~1078-fold)in the stiffness of the probe,which can therefore chronically monitor a wide area of the brain.These results indicate the ability to use a simplistic design for implantation of wide and deep brain probes while preventing unnecessary damage to the brain and probe degradation during long-term use.展开更多
基金support from the Ajou University research fundsupported by funding from the NRF of Korea(grant nos.RS-2023-00277110,RS-2023-00271830,RS-2024-00403639,RS-2024-00466111,and RS-2024-00411660)supported by Samsung Display(grant number:S-2025-C1462-00002).
文摘Origami structures provide functional advantages to rigid electronics through geometric transformations.However,the transformations involved in folding and deployment cause stress concentration on flexure hinges of origami structure,triggering electronic malfunction.Here,we report origami electronics based on a fiber-reinforced electronic composite.A thin PEDOT:PSS-based electronic composite minimizes stress during folding without electrode damage.Nylon is embedded in this foldable composite and,despite being thin and flexible for folding,provides high tensile resistance to prevent plastic deformation and tearing under tension.This strategy enables the creation of flexure hinges for origami electronics that maintain mechanical and electrical stability under repeated transformations.Origami electronics that integrate the high-durability composite can be used in display applications supporting 25-fold compression with the Flasher origami structure and 2D-to-3D deployment with the Kresling origami structure.The ability of origami electronics to withstand bending and tensile stress enables shape-reconfigurable displays requiring repeated reconfiguration across multiple hinges.
基金supported by funding from the NRF of Korea(grant no.2022R1C1C1005741,2022R1A2C2093100,RS-2023-00217595,RS-2023-00271830)supported by the Korea Environment Industry&Technology Institute(KEITI)through the Digital Infrastructure Building Project for Monitoring,Surveying,and Evaluating the Environmental Health Program,funded by the Korea Ministry of Environment(MOE)(2021003330009).
文摘Bioelectronic implants in the deep brain provide the opportunity to monitor deep brain activity with potential applications in disease diagnostics and treatment.However,mechanical mismatch between a probe and brain tissue can cause surgical trauma in the brain and limit chronic probe-based monitoring,leading to performance degradation.Here,we report a transient shuttle-based probe consisting of a PVA and a mesh-type probe.A rigid shuttle based on PVA implants an ultrathin mesh probe in the target deep brain without a tangle,while creating both a sharp edge for facile penetration into the brain and an anti-friction layer between the probe and brain tissue through dissolving its surface.The capability to shuttle dissolved materials can exclude the retracted process of the shuttle in the brain.Complete dissolution of the shuttle provides a dramatic decrease(~1078-fold)in the stiffness of the probe,which can therefore chronically monitor a wide area of the brain.These results indicate the ability to use a simplistic design for implantation of wide and deep brain probes while preventing unnecessary damage to the brain and probe degradation during long-term use.
