Cited by 884Neuroscience and Neural EngineeringAnalog and Mixed-Signal Circuit DesignAdvanced MEMS and NEMS Technologies

A silicon-based, three-dimensional neural interface: manufacturing processes for an intracortical electrode array

Campbell, P.K., Jones, K.E., Huber, R.J., Horch, K.W., Normann, R.A.·1991·IEEE Transactions on Biomedical Engineering

Abstract

A method has been developed for the manufacture of a "three-dimensional" electrode array geometry for chronic intracortical stimulation. This silicon based array consists of a 4.2 x 4.2 x 0.12 mm thick monocrystalline substrate, from which project 100 conductive, silicon needles sharpened to facilitate cortical penetration. Each needle is electrically isolated from the other needles, and is about 0.09 mm thick at its base and 1.5 mm long. The sharpened end of each needle is coated with platinum to facilitate charge transfer into neural tissue. The following manufacturing processes were used to create this array. 1) Thermomigration of 100 aluminum pads through an n-type silicon block. This creates trails of highly conductive p+ silicon isolated from each other by opposing pn junctions. 2) A combination of mechanical and chemical micromachining which creates individual penetrating needles of the p+ silicon trails. 3) Metal deposition to create active electrode areas and electrical contact pads. 4) Array encapsulation with polyimide. The geometrical, mechanical, and electrical properties of these arrays should make them well suited as interfaces to cortical tissue.

Integrity signals

Registry

Crossref · 10.1109/10.83588

Cites

20 of 20 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Current state-of-the-art silicon-based in vivo systems do not commonly feature more than hundreds of electrodes, with recent improvements bringing this number closer to one thousand, even on a single probe.

    “Current state-of-the-art silicon-based in vivo systems do not commonly feature more than hundreds of electrodes (Campbell et al. 1991), with recent improvements bringing this number closer to one thousand (Shobe et al. 2015; Scholvin et al. 2016; Buszáki et al. 2015), even on a single probe (Jun et al. 2017).”

Cites

Flagged first, then by citations

4 of the 24 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Campbell, P. K., Jones, K. E., Huber, R. J., Horch, K. W., & Normann, R. A.
Affiliations
University of Utah (US)
Venue
IEEE Transactions on Biomedical Engineering
Published
1991
Volume
38
Issue
8
Pages
758-768
ISSN
0018-9294 (ISSN-L)
OpenAlex
W2111937020
Cited by
881
References
24
Citations by year
2026: 21 · 2025: 29 · 2024: 41 · 2023: 24 · 2022: 35 · 2021: 32 · 2020: 40 · 2019: 39 · 2018: 34 · 2017: 41 · 2016: 36 · 2015: 41 · 2014: 43 · 2013: 56 · 2012: 41
FWCI
1.70
Type
journal article
Language
en
Open access
closed
Locations
  • IEEE Transactions on Biomedical Engineering (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neural Engineering
  • Physical Sciences › Engineering › Biomedical Engineering › Analog and Mixed-Signal Circuit Design
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced MEMS and NEMS Technologies
Keywords
neural interfaces, thermomigration, p+ silicon, micromachining, platinum coating, polyimide encapsulation, monocrystalline silicon substrate, galvanic isolation
MeSH terms
Animals, Biocompatible Materials, Cats, Electric Conductivity, Electric Stimulation, Electrodes, Implanted, Materials Testing, Microscopy, Electron, Scanning, Silicon, Somatosensory Cortex, Reproducibility of Results

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review