---
OA_type: closed access
_id: '18000'
abstract:
- lang: eng
  text: Measurement of electronics and mechanics of single molecules provides a fundamental
    understanding of conductance as well as bonding at the atomic scale. To study
    the mechanics at these length scales, we have built a conducting atomic force
    microscope (AFM) optimized for high displacement and force resolution. Here, we
    simultaneously measure conductance and force across single Au-molecule-Au junctions
    in order to obtain complementary information about the electronics and structure
    in these systems. First we show that single-atom Au contacts, which have a conductance
    of G0 (2e2/h), have a rupture force of about 1.4 nN, in excellent agreement with
    previous theoretical and experimental studies. For a series of amine and pyridine
    linked molecules which are bound to Au electrodes through an Au-N donor-acceptor
    bond, we observe that the rupture force depends on the backbone chemistry and
    can range from 0.5 to 0.8 nN. We also study junctions formed with molecules that
    bind through P-Au and S-Au interactions. We find that both the conductance signatures
    and junction evolution of covalent S-Au bond (thiolate) and a donor-acceptor S-Au
    bond (thiol) are dramatically different. Finally, we perform density functional
    theory based adiabatic molecular junction elongation and rupture calculations
    which give us an insight into the underlying mechanisms in these experiments.
alternative_title:
- MEMS
article_processing_charge: No
author:
- first_name: Sriharsha V.
  full_name: Aradhya, Sriharsha V.
  last_name: Aradhya
- first_name: Michael
  full_name: Frei, Michael
  last_name: Frei
- first_name: Mark S.
  full_name: Hybertsen, Mark S.
  last_name: Hybertsen
- first_name: Latha
  full_name: Venkataraman, Latha
  id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
  last_name: Venkataraman
  orcid: 0000-0002-6957-6089
citation:
  ama: 'Aradhya SV, Frei M, Hybertsen MS, Venkataraman L. Simultaneous measurement
    of force and conductance across single molecule junctions. In: <i>Proceedings
    of the 2012 Annual Conference on Experimental and Applied Mechanics</i>. Vol 6.
    Springer Nature; 2012:75-84. doi:<a href="https://doi.org/10.1007/978-1-4614-4436-7_12">10.1007/978-1-4614-4436-7_12</a>'
  apa: 'Aradhya, S. V., Frei, M., Hybertsen, M. S., &#38; Venkataraman, L. (2012).
    Simultaneous measurement of force and conductance across single molecule junctions.
    In <i>Proceedings of the 2012 Annual Conference on Experimental and Applied Mechanics</i>
    (Vol. 6, pp. 75–84). Costa Mesa, CA, United States: Springer Nature. <a href="https://doi.org/10.1007/978-1-4614-4436-7_12">https://doi.org/10.1007/978-1-4614-4436-7_12</a>'
  chicago: Aradhya, Sriharsha V., Michael Frei, Mark S. Hybertsen, and Latha Venkataraman.
    “Simultaneous Measurement of Force and Conductance across Single Molecule Junctions.”
    In <i>Proceedings of the 2012 Annual Conference on Experimental and Applied Mechanics</i>,
    6:75–84. Springer Nature, 2012. <a href="https://doi.org/10.1007/978-1-4614-4436-7_12">https://doi.org/10.1007/978-1-4614-4436-7_12</a>.
  ieee: S. V. Aradhya, M. Frei, M. S. Hybertsen, and L. Venkataraman, “Simultaneous
    measurement of force and conductance across single molecule junctions,” in <i>Proceedings
    of the 2012 Annual Conference on Experimental and Applied Mechanics</i>, Costa
    Mesa, CA, United States, 2012, vol. 6, pp. 75–84.
  ista: Aradhya SV, Frei M, Hybertsen MS, Venkataraman L. 2012. Simultaneous measurement
    of force and conductance across single molecule junctions. Proceedings of the
    2012 Annual Conference on Experimental and Applied Mechanics. Conference on Experimental
    and Applied Mechanics, MEMS, vol. 6, 75–84.
  mla: Aradhya, Sriharsha V., et al. “Simultaneous Measurement of Force and Conductance
    across Single Molecule Junctions.” <i>Proceedings of the 2012 Annual Conference
    on Experimental and Applied Mechanics</i>, vol. 6, Springer Nature, 2012, pp.
    75–84, doi:<a href="https://doi.org/10.1007/978-1-4614-4436-7_12">10.1007/978-1-4614-4436-7_12</a>.
  short: S.V. Aradhya, M. Frei, M.S. Hybertsen, L. Venkataraman, in:, Proceedings
    of the 2012 Annual Conference on Experimental and Applied Mechanics, Springer
    Nature, 2012, pp. 75–84.
conference:
  end_date: 2012-06-14
  location: Costa Mesa, CA, United States
  name: Conference on Experimental and Applied Mechanics
  start_date: 2012-06-11
date_created: 2024-09-09T11:38:46Z
date_published: 2012-06-01T00:00:00Z
date_updated: 2025-01-03T08:16:32Z
day: '01'
doi: 10.1007/978-1-4614-4436-7_12
extern: '1'
intvolume: '         6'
language:
- iso: eng
month: '06'
oa_version: None
page: 75-84
publication: Proceedings of the 2012 Annual Conference on Experimental and Applied
  Mechanics
publication_identifier:
  eisbn:
  - '9781461444367'
  eissn:
  - 2191-5652
  isbn:
  - '9781461444350'
  issn:
  - 2191-5644
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Simultaneous measurement of force and conductance across single molecule junctions
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 6
year: '2012'
...