Publication detail

Micropyramid structured photo capacitive interfaces

NIKIĆ, M. OPANCAR, A. HARTMANN, F. MIGLIACCIO, L. JAKEŠOVÁ, M. GLOWACKI, E. DEREK, V.

Original Title

Micropyramid structured photo capacitive interfaces

Type

journal article in Web of Science

Language

English

Original Abstract

Optically driven electronic neuromodulation devices are a novel tool in basic research and offer new prospects in medical therapeutic applications. Optimal operation of such devices requires efficient light capture and charge generation, effective electrical communication across the device's bioelectronic interface, conformal adhesion to the target tissue, and mechanical stability of the device during the lifetime of the implant-all of which can be tuned by spatial structuring of the device. We demonstrate a 3D structured opto-bioelectronic device-an organic electrolytic photocapacitor spatially designed by depositing the active device layers on an inverted micropyramid-shaped substrate. Ultrathin, transparent, and flexible micropyramid-shaped foil was fabricated by chemical vapour deposition of parylene C on silicon moulds containing arrays of inverted micropyramids, followed by a peel-off procedure. The capacitive current delivered by the devices showed a strong dependency on the underlying spatial structure. The device performance was evaluated by numerical modelling. We propose that the developed numerical model can be used as a basis for the design of future functional 3D design of opto-bioelectronic devices and electrodes.

Keywords

bioelectronics; micropyramids; photocapacitors; neurostimulation

Authors

NIKIĆ, M.; OPANCAR, A.; HARTMANN, F.; MIGLIACCIO, L.; JAKEŠOVÁ, M.; GLOWACKI, E.; DEREK, V.

Released

11. 6. 2022

Publisher

IOP Publishing

Location

BRISTOL

ISBN

1361-6528

Periodical

Nanotechnology

Year of study

33

Number

24

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

9

Pages count

9

URL

https://iopscience.iop.org/article/10.1088/1361-6528/ac5927

Full text in the Digital Library

http://hdl.handle.net/11012/208183

BibTex

@article{BUT178436,
  author="Marta {Nikić} and Aleksandar {Opančar} and Florian {Hartmann} and Ludovico {Migliaccio} and Marie {Jakešová} and Eric Daniel {Glowacki} and Vedran {Derek}",
  title="Micropyramid structured photo capacitive interfaces",
  journal="Nanotechnology",
  year="2022",
  volume="33",
  number="24",
  pages="1--9",
  doi="10.1088/1361-6528/ac5927",
  issn="1361-6528",
  url="https://iopscience.iop.org/article/10.1088/1361-6528/ac5927"
}