---
_id: '12822'
abstract:
- lang: eng
  text: Gears and cogwheels are elemental components of machines. They restrain degrees
    of freedom and channel power into a specified motion. Building and powering small-scale
    cogwheels are key steps toward feasible micro and nanomachinery. Assembly, energy
    injection, and control are, however, a challenge at the microscale. In contrast
    with passive gears, whose function is to transmit torques from one to another,
    interlocking and untethered active gears have the potential to unveil dynamics
    and functions untapped by externally driven mechanisms. Here, it is shown the
    assembly and control of a family of self-spinning cogwheels with varying teeth
    numbers and study the interlocking of multiple cogwheels. The teeth are formed
    by colloidal microswimmers that power the structure. The cogwheels are autonomous
    and active, showing persistent rotation. Leveraging the angular momentum of optical
    vortices, we control the direction of rotation of the cogwheels. The pairs of
    interlocking and active cogwheels that roll over each other in a random walk and
    have curvature-dependent mobility are studied. This behavior is leveraged to self-position
    parts and program microbots, demonstrating the ability to pick up, direct, and
    release a load. The work constitutes a step toward autonomous machinery with external
    control as well as (re)programmable microbots and matter.
acknowledgement: 'Army Research Office. Grant Number: W911NF-20-1-0112'
article_number: '2200129'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Quentin
  full_name: Martinet, Quentin
  id: b37485a8-d343-11eb-a0e9-df8c484ef8ab
  last_name: Martinet
- first_name: Antoine
  full_name: Aubret, Antoine
  last_name: Aubret
- first_name: Jérémie A
  full_name: Palacci, Jérémie A
  id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d
  last_name: Palacci
  orcid: 0000-0002-7253-9465
citation:
  ama: Martinet Q, Aubret A, Palacci JA. Rotation control, interlocking, and self‐positioning
    of active cogwheels. <i>Advanced Intelligent Systems</i>. 2023;5(1). doi:<a href="https://doi.org/10.1002/aisy.202200129">10.1002/aisy.202200129</a>
  apa: Martinet, Q., Aubret, A., &#38; Palacci, J. A. (2023). Rotation control, interlocking,
    and self‐positioning of active cogwheels. <i>Advanced Intelligent Systems</i>.
    Wiley. <a href="https://doi.org/10.1002/aisy.202200129">https://doi.org/10.1002/aisy.202200129</a>
  chicago: Martinet, Quentin, Antoine Aubret, and Jérémie A Palacci. “Rotation Control,
    Interlocking, and Self‐positioning of Active Cogwheels.” <i>Advanced Intelligent
    Systems</i>. Wiley, 2023. <a href="https://doi.org/10.1002/aisy.202200129">https://doi.org/10.1002/aisy.202200129</a>.
  ieee: Q. Martinet, A. Aubret, and J. A. Palacci, “Rotation control, interlocking,
    and self‐positioning of active cogwheels,” <i>Advanced Intelligent Systems</i>,
    vol. 5, no. 1. Wiley, 2023.
  ista: Martinet Q, Aubret A, Palacci JA. 2023. Rotation control, interlocking, and
    self‐positioning of active cogwheels. Advanced Intelligent Systems. 5(1), 2200129.
  mla: Martinet, Quentin, et al. “Rotation Control, Interlocking, and Self‐positioning
    of Active Cogwheels.” <i>Advanced Intelligent Systems</i>, vol. 5, no. 1, 2200129,
    Wiley, 2023, doi:<a href="https://doi.org/10.1002/aisy.202200129">10.1002/aisy.202200129</a>.
  short: Q. Martinet, A. Aubret, J.A. Palacci, Advanced Intelligent Systems 5 (2023).
date_created: 2023-04-12T08:30:03Z
date_published: 2023-01-01T00:00:00Z
date_updated: 2023-08-01T14:06:50Z
day: '01'
ddc:
- '530'
department:
- _id: JePa
doi: 10.1002/aisy.202200129
external_id:
  arxiv:
  - '2201.03333'
  isi:
  - '000852291200001'
file:
- access_level: open_access
  checksum: d48fc41d39892e7fa0d44cb352dd46aa
  content_type: application/pdf
  creator: dernst
  date_created: 2023-04-17T06:44:17Z
  date_updated: 2023-04-17T06:44:17Z
  file_id: '12840'
  file_name: 2023_AdvancedIntelligentSystems_Martinet.pdf
  file_size: 2414125
  relation: main_file
  success: 1
file_date_updated: 2023-04-17T06:44:17Z
has_accepted_license: '1'
intvolume: '         5'
isi: 1
issue: '1'
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '01'
oa: 1
oa_version: Published Version
publication: Advanced Intelligent Systems
publication_identifier:
  issn:
  - 2640-4567
publication_status: published
publisher: Wiley
quality_controlled: '1'
status: public
title: Rotation control, interlocking, and self‐positioning of active cogwheels
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 5
year: '2023'
...