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Title: Microelectromechanical systems integrating molecular spin crossover actuators

Abstract

Silicon MEMS cantilevers coated with a 200 nm thin layer of the molecular spin crossover complex [Fe(H{sub 2}B(pz){sub 2}){sub 2}(phen)] (H{sub 2}B(pz){sub 2} = dihydrobis(pyrazolyl)borate and phen = 1,10-phenantroline) were actuated using an external magnetic field and their resonance frequency was tracked by means of integrated piezoresistive detection. The light-induced spin-state switching of the molecules from the ground low spin to the metastable high spin state at 10 K led to a well-reproducible shift of the cantilever's resonance frequency (Δf{sub r} = −0.52 Hz). Control experiments at different temperatures using coated as well as uncoated devices along with simple calculations support the assignment of this effect to the spin transition. This latter translates into changes in mechanical behavior of the cantilever due to the strong spin-state/lattice coupling. A guideline for the optimization of device parameters is proposed so as to efficiently harness molecular scale movements for large-scale mechanical work, thus paving the road for nanoelectromechanical systems (NEMS) actuators based on molecular materials.

Authors:
 [1];  [2]; ; ; ;  [1]; ; ; ; ;  [3]
  1. LCC, CNRS and Université de Toulouse, UPS, INP, F-31077 Toulouse (France)
  2. (France)
  3. LAAS, CNRS and Université de Toulouse, INSA, UPS, F-31077 Toulouse (France)
Publication Date:
OSTI Identifier:
22594344
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 109; Journal Issue: 6; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ACTUATORS; ALLOCATIONS; BORATES; CONTROL; COUPLING; HIGH SPIN STATES; MAGNETIC FIELDS; MEMS; NEMS; OPTIMIZATION; PARTICLE TRACKS; RESONANCE; SILICON; SPIN; THIN FILMS

Citation Formats

Manrique-Juarez, Maria D., LAAS, CNRS and Université de Toulouse, INSA, UPS, F-31077 Toulouse, Rat, Sylvain, Salmon, Lionel, Molnár, Gábor, Bousseksou, Azzedine, E-mail: liviu.nicu@laas.fr, E-mail: azzedine.bousseksou@lcc-toulouse.fr, Mathieu, Fabrice, Saya, Daisuke, Séguy, Isabelle, Leïchlé, Thierry, and Nicu, Liviu, E-mail: liviu.nicu@laas.fr, E-mail: azzedine.bousseksou@lcc-toulouse.fr. Microelectromechanical systems integrating molecular spin crossover actuators. United States: N. p., 2016. Web. doi:10.1063/1.4960766.
Manrique-Juarez, Maria D., LAAS, CNRS and Université de Toulouse, INSA, UPS, F-31077 Toulouse, Rat, Sylvain, Salmon, Lionel, Molnár, Gábor, Bousseksou, Azzedine, E-mail: liviu.nicu@laas.fr, E-mail: azzedine.bousseksou@lcc-toulouse.fr, Mathieu, Fabrice, Saya, Daisuke, Séguy, Isabelle, Leïchlé, Thierry, & Nicu, Liviu, E-mail: liviu.nicu@laas.fr, E-mail: azzedine.bousseksou@lcc-toulouse.fr. Microelectromechanical systems integrating molecular spin crossover actuators. United States. doi:10.1063/1.4960766.
Manrique-Juarez, Maria D., LAAS, CNRS and Université de Toulouse, INSA, UPS, F-31077 Toulouse, Rat, Sylvain, Salmon, Lionel, Molnár, Gábor, Bousseksou, Azzedine, E-mail: liviu.nicu@laas.fr, E-mail: azzedine.bousseksou@lcc-toulouse.fr, Mathieu, Fabrice, Saya, Daisuke, Séguy, Isabelle, Leïchlé, Thierry, and Nicu, Liviu, E-mail: liviu.nicu@laas.fr, E-mail: azzedine.bousseksou@lcc-toulouse.fr. Mon . "Microelectromechanical systems integrating molecular spin crossover actuators". United States. doi:10.1063/1.4960766.
@article{osti_22594344,
title = {Microelectromechanical systems integrating molecular spin crossover actuators},
author = {Manrique-Juarez, Maria D. and LAAS, CNRS and Université de Toulouse, INSA, UPS, F-31077 Toulouse and Rat, Sylvain and Salmon, Lionel and Molnár, Gábor and Bousseksou, Azzedine, E-mail: liviu.nicu@laas.fr, E-mail: azzedine.bousseksou@lcc-toulouse.fr and Mathieu, Fabrice and Saya, Daisuke and Séguy, Isabelle and Leïchlé, Thierry and Nicu, Liviu, E-mail: liviu.nicu@laas.fr, E-mail: azzedine.bousseksou@lcc-toulouse.fr},
abstractNote = {Silicon MEMS cantilevers coated with a 200 nm thin layer of the molecular spin crossover complex [Fe(H{sub 2}B(pz){sub 2}){sub 2}(phen)] (H{sub 2}B(pz){sub 2} = dihydrobis(pyrazolyl)borate and phen = 1,10-phenantroline) were actuated using an external magnetic field and their resonance frequency was tracked by means of integrated piezoresistive detection. The light-induced spin-state switching of the molecules from the ground low spin to the metastable high spin state at 10 K led to a well-reproducible shift of the cantilever's resonance frequency (Δf{sub r} = −0.52 Hz). Control experiments at different temperatures using coated as well as uncoated devices along with simple calculations support the assignment of this effect to the spin transition. This latter translates into changes in mechanical behavior of the cantilever due to the strong spin-state/lattice coupling. A guideline for the optimization of device parameters is proposed so as to efficiently harness molecular scale movements for large-scale mechanical work, thus paving the road for nanoelectromechanical systems (NEMS) actuators based on molecular materials.},
doi = {10.1063/1.4960766},
journal = {Applied Physics Letters},
number = 6,
volume = 109,
place = {United States},
year = {Mon Aug 08 00:00:00 EDT 2016},
month = {Mon Aug 08 00:00:00 EDT 2016}
}