Spring-Like Kirigami Microelectrode Array in Shape Memory Polymer for Spontaneous Adaptation of Complex Topography in Neural Implants

Yuanhao Xu; Stella W. Pang

doi:10.1109/MEMS61431.2025.10917297

Spring-Like Kirigami Microelectrode Array in Shape Memory Polymer for Spontaneous Adaptation of Complex Topography in Neural Implants

Yuanhao Xu
, Stella W. Pang^*

^*Corresponding author for this work

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

1 Citation (Scopus)

Abstract

This study presents a novel fabrication technology for shape memory polymer based kirigami electrodes designed for surface-mounted neural implants. The 3D kirigami structures enable dynamic height adjustments to adaptively conform to uneven topographies, effectively filling gaps up to 500 μm. Experimental results demonstrate significant improvements in signal quality compared to conventional 2D electrodes, with enhanced current uniformity after shape recovery. The spontaneous adaptability of these electrodes eliminates the need for local programming, making them suitable for diverse applications in neural interfaces and contributing to improved long-term stability and functionality in biomedical devices. © 2025 IEEE.

Original language	English
Title of host publication	2025 IEEE 38th International Conference on Micro Electro Mechanical Systems (MEMS)
Publisher	IEEE
Pages	488-491
ISBN (Electronic)	979-8-3315-0889-0
DOIs	https://doi.org/10.1109/MEMS61431.2025.10917297
Publication status	Published - 2025
Event	The 38th IEEE International Conference on Micro Electro Mechanical Systems (IEEE MEMS 2025) - Kaohsiung, Taiwan, China Duration: 19 Jan 2025 → 23 Jan 2025 https://mems25.org/

Publication series

Name	Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
ISSN (Print)	1084-6999

Conference

Conference	The 38th IEEE International Conference on Micro Electro Mechanical Systems (IEEE MEMS 2025)
Place	Taiwan, China
City	Kaohsiung
Period	19/01/25 → 23/01/25
Internet address	https://mems25.org/

Funding

This work was supported by the Research Grants Council of the Hong Kong Special Administrative Region, China (Project No. CityU11207821 and CityU11205423) and the Center for Biosystems, Neuroscience, and Nanotechnology (CBNN) of City University of Hong Kong (9360148, 9380062).

Research Keywords

3D electrodes
kirigami
Microelectrode arrays
shape memory polymer
spontaneous adjustment

RGC Funding Information

RGC-funded

Access Output

10.1109/MEMS61431.2025.10917297

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Cite this

Xu, Y., & Pang, S. W. (2025). Spring-Like Kirigami Microelectrode Array in Shape Memory Polymer for Spontaneous Adaptation of Complex Topography in Neural Implants. In 2025 IEEE 38th International Conference on Micro Electro Mechanical Systems (MEMS) (pp. 488-491). (Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)). IEEE. https://doi.org/10.1109/MEMS61431.2025.10917297

Xu, Yuanhao ; Pang, Stella W. / Spring-Like Kirigami Microelectrode Array in Shape Memory Polymer for Spontaneous Adaptation of Complex Topography in Neural Implants. 2025 IEEE 38th International Conference on Micro Electro Mechanical Systems (MEMS). IEEE, 2025. pp. 488-491 (Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)).

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title = "Spring-Like Kirigami Microelectrode Array in Shape Memory Polymer for Spontaneous Adaptation of Complex Topography in Neural Implants",

abstract = "This study presents a novel fabrication technology for shape memory polymer based kirigami electrodes designed for surface-mounted neural implants. The 3D kirigami structures enable dynamic height adjustments to adaptively conform to uneven topographies, effectively filling gaps up to 500 μm. Experimental results demonstrate significant improvements in signal quality compared to conventional 2D electrodes, with enhanced current uniformity after shape recovery. The spontaneous adaptability of these electrodes eliminates the need for local programming, making them suitable for diverse applications in neural interfaces and contributing to improved long-term stability and functionality in biomedical devices. {\textcopyright} 2025 IEEE.",

keywords = "3D electrodes, kirigami, Microelectrode arrays, shape memory polymer, spontaneous adjustment",

author = "Yuanhao Xu and Pang, \{Stella W.\}",

year = "2025",

doi = "10.1109/MEMS61431.2025.10917297",

language = "English",

series = "Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)",

publisher = "IEEE",

pages = "488--491",

booktitle = "2025 IEEE 38th International Conference on Micro Electro Mechanical Systems (MEMS)",

address = "United States",

note = "The 38th IEEE International Conference on Micro Electro Mechanical Systems (IEEE MEMS 2025) ; Conference date: 19-01-2025 Through 23-01-2025",

url = "https://mems25.org/",

}

Xu, Y & Pang, SW 2025, Spring-Like Kirigami Microelectrode Array in Shape Memory Polymer for Spontaneous Adaptation of Complex Topography in Neural Implants. in 2025 IEEE 38th International Conference on Micro Electro Mechanical Systems (MEMS). Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS), IEEE, pp. 488-491, The 38th IEEE International Conference on Micro Electro Mechanical Systems (IEEE MEMS 2025), Kaohsiung, Taiwan, China, 19/01/25. https://doi.org/10.1109/MEMS61431.2025.10917297

Spring-Like Kirigami Microelectrode Array in Shape Memory Polymer for Spontaneous Adaptation of Complex Topography in Neural Implants. / Xu, Yuanhao ; Pang, Stella W.
2025 IEEE 38th International Conference on Micro Electro Mechanical Systems (MEMS). IEEE, 2025. p. 488-491 (Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)).

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

TY - GEN

T1 - Spring-Like Kirigami Microelectrode Array in Shape Memory Polymer for Spontaneous Adaptation of Complex Topography in Neural Implants

AU - Xu, Yuanhao

AU - Pang, Stella W.

PY - 2025

Y1 - 2025

N2 - This study presents a novel fabrication technology for shape memory polymer based kirigami electrodes designed for surface-mounted neural implants. The 3D kirigami structures enable dynamic height adjustments to adaptively conform to uneven topographies, effectively filling gaps up to 500 μm. Experimental results demonstrate significant improvements in signal quality compared to conventional 2D electrodes, with enhanced current uniformity after shape recovery. The spontaneous adaptability of these electrodes eliminates the need for local programming, making them suitable for diverse applications in neural interfaces and contributing to improved long-term stability and functionality in biomedical devices. © 2025 IEEE.

AB - This study presents a novel fabrication technology for shape memory polymer based kirigami electrodes designed for surface-mounted neural implants. The 3D kirigami structures enable dynamic height adjustments to adaptively conform to uneven topographies, effectively filling gaps up to 500 μm. Experimental results demonstrate significant improvements in signal quality compared to conventional 2D electrodes, with enhanced current uniformity after shape recovery. The spontaneous adaptability of these electrodes eliminates the need for local programming, making them suitable for diverse applications in neural interfaces and contributing to improved long-term stability and functionality in biomedical devices. © 2025 IEEE.

KW - 3D electrodes

KW - kirigami

KW - Microelectrode arrays

KW - shape memory polymer

KW - spontaneous adjustment

UR - https://www.scopus.com/pages/publications/105001661669

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-105001661669&origin=recordpage

U2 - 10.1109/MEMS61431.2025.10917297

DO - 10.1109/MEMS61431.2025.10917297

M3 - RGC 32 - Refereed conference paper (with host publication)

T3 - Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)

SP - 488

EP - 491

BT - 2025 IEEE 38th International Conference on Micro Electro Mechanical Systems (MEMS)

PB - IEEE

T2 - The 38th IEEE International Conference on Micro Electro Mechanical Systems (IEEE MEMS 2025)

Y2 - 19 January 2025 through 23 January 2025

ER -

Xu Y , Pang SW. Spring-Like Kirigami Microelectrode Array in Shape Memory Polymer for Spontaneous Adaptation of Complex Topography in Neural Implants. In 2025 IEEE 38th International Conference on Micro Electro Mechanical Systems (MEMS). IEEE. 2025. p. 488-491. (Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)). Epub 2025 Mar 19. doi: 10.1109/MEMS61431.2025.10917297

Spring-Like Kirigami Microelectrode Array in Shape Memory Polymer for Spontaneous Adaptation of Complex Topography in Neural Implants

Abstract

Publication series

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Funding

Research Keywords

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GRF: Microwells with Integrated Plasmonic Sensors and Narrow Channels to Study Cell Passage

GRF: Three-Dimensional Microposts Covered with Nanostructures for Circulating Tumor Cell and Small Molecule Detection

Cite this

Spring-Like Kirigami Microelectrode Array in Shape Memory Polymer for Spontaneous Adaptation of Complex Topography in Neural Implants

Abstract

Publication series

Conference

Funding

Research Keywords

RGC Funding Information

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Projects

GRF: Microwells with Integrated Plasmonic Sensors and Narrow Channels to Study Cell Passage

GRF: Three-Dimensional Microposts Covered with Nanostructures for Circulating Tumor Cell and Small Molecule Detection

Cite this