Laser-Driven, Surface-Mounted Unidirectional Rotor

Joshua E. Szekely; Felix K. Amankona-Diawuo; Tamar Seideman

doi:10.1021/acs.jpcc.6b05476

Laser-Driven, Surface-Mounted Unidirectional Rotor

Joshua E. Szekely, Felix K. Amankona-Diawuo, Tamar Seideman^*

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

We propose a design for a class of molecular rotors fixed to a semiconductor surface, induced by a moderately intense, linearly polarized laser pulse. The rotor consists of an organic molecule possessing a polarizable headgroup that is attached via a linear component to the surface. The polarization direction in parallel to the surface plane is determined so as to maximize the torque experienced by the molecular headgroup and, hence, the duration of the ensuing rotation, while also controlling the sense of rotation. We find that the molecule continues to rotate for many rotational periods after the laser pulse turns off, before multiple scattering by the potential barrier results in dephasing.

Original language	English (US)
Pages (from-to)	21133-21137
Number of pages	5
Journal	Journal of Physical Chemistry C
Volume	120
Issue number	37
DOIs	https://doi.org/10.1021/acs.jpcc.6b05476
State	Published - Sep 22 2016

Funding

The authors thank the Department of Energy (Award No. DEFG02-04ER15612/0011) and the National Science Foundation (Award No. DMR-1121262 to the Northwestern Materials Research Center) for support of this research.

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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title = "Laser-Driven, Surface-Mounted Unidirectional Rotor",

abstract = "We propose a design for a class of molecular rotors fixed to a semiconductor surface, induced by a moderately intense, linearly polarized laser pulse. The rotor consists of an organic molecule possessing a polarizable headgroup that is attached via a linear component to the surface. The polarization direction in parallel to the surface plane is determined so as to maximize the torque experienced by the molecular headgroup and, hence, the duration of the ensuing rotation, while also controlling the sense of rotation. We find that the molecule continues to rotate for many rotational periods after the laser pulse turns off, before multiple scattering by the potential barrier results in dephasing.",

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AU - Amankona-Diawuo, Felix K.

AU - Seideman, Tamar

PY - 2016/9/22

Y1 - 2016/9/22

N2 - We propose a design for a class of molecular rotors fixed to a semiconductor surface, induced by a moderately intense, linearly polarized laser pulse. The rotor consists of an organic molecule possessing a polarizable headgroup that is attached via a linear component to the surface. The polarization direction in parallel to the surface plane is determined so as to maximize the torque experienced by the molecular headgroup and, hence, the duration of the ensuing rotation, while also controlling the sense of rotation. We find that the molecule continues to rotate for many rotational periods after the laser pulse turns off, before multiple scattering by the potential barrier results in dephasing.

AB - We propose a design for a class of molecular rotors fixed to a semiconductor surface, induced by a moderately intense, linearly polarized laser pulse. The rotor consists of an organic molecule possessing a polarizable headgroup that is attached via a linear component to the surface. The polarization direction in parallel to the surface plane is determined so as to maximize the torque experienced by the molecular headgroup and, hence, the duration of the ensuing rotation, while also controlling the sense of rotation. We find that the molecule continues to rotate for many rotational periods after the laser pulse turns off, before multiple scattering by the potential barrier results in dephasing.

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JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

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ER -

Laser-Driven, Surface-Mounted Unidirectional Rotor

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