Farajian Group

 




Principal Investigator:

 

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Amir A. Farajian
Associate Professor

Department of Mechanical and Materials Engineering,
Wright State University, Dayton, Ohio 45435, USA
Phone: (937) 775-2619
Fax: (937) 775-5082

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Websites:

people.wright.edu

Google Scholar

 

Career and education history

 
 

 
Publications:
 

Journal and Book Chapter Publications (PDF)

 

Google Scholar h-index: 24

 


 

Research fields and interests:

Nanoscience and nanoengineering with emphasis on computational modeling, 2D nanomaterials processing and characterization, sensors, materials for renewable energy, inelastic response, nano- and molecular-electronics, nanoelectromechanical systems, electronic and thermal quantum transports. Some of the recent topics include:

        Ab initio characterization and design of materials

        Coherent and incoherent quantum electronic and thermal transports

        2D nanomaterials processing and thermodynamics

        Nanoelectronic-based electrochemical and electromechanical sensors

        Nanostructured fluids: Phase transition and electrorheology

        Nanostructured composites: Mechanical properties

        Renewable energy applications of nanostructured materials

 

- Nanomaterials for renewable energy applications


Engineering materials at the atomic and molecular scales can have significant effects on energy harvesting such as thermoelectric and photovoltaic applications. Quantum confinement effects in low-dimensional nanomaterials can enhance their efficiency.

J. Phys. Chem. C, 122, 8843 (2018)

- Quantum electronic and thermal transports



Nanostructured materials provide the possibility of engineering material properties at nanometer length scale. This can be utilized to solve outstanding technological problems in various fields. Electronic and thermal transports at the nanometer scale are significantly affected by quantum effects. Quantum transport studies are used to design and characterize materials for, e.g., nanoelectronic and thermal management application.

Appl. Phys. Lett. 109, 173102 (2016)
Thin Solid Films 499, 269 (2006)
Phys. Rev. Lett. 82, 5084 (1999)

 

- 2D nanomaterials exfoliation

Given the current status of graphene, a unique 2D material, and its applications, exploring methods of graphene mass-production is of paramount importance. Direct exfoliation of graphene from graphite, without the unwanted effects of oxidation and/or intercalation, provides large amounts of defect-free graphene nanoplatelets. Suitable surfactant choice is crucial for this purpose. Understanding the exfoliation process at the atomic/molecular scale is essential for production optimization.

Phys. Chem. Chem. Phys. 21, 1761 (2019)

J. Phys. Chem. C. 114, 21083 (2010)

 

 


 



- Nano- and molecular-electronics
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As shrinking size of electronic components causes them to have nanometer length scales, transport properties (both electronic and thermal) are governed by the quantum mechanics. Of special interest are the finite temperature effects and electron-phonon interactions.

Nano Research 7, 945 (2014)
RSC Adv. 4, 2346 (2014)
J. Phys. Chem. C. 117, 12815 (2013)
J. Phys.: Condens. Matter 23, 075301 (2011)
Nanotechnology 20, 015201 (2009)
J. Chem. Phys. 127, 024901 (2007)
Thin Solid Films 499, 269 (2006)
Nanotube Electronics; Physical Review Focus, June 22, 1999

- Hydrogen-containing nanocages

Hydrogen-containing nanocages provide novel solutions to the hydrogen storage problem, which is essential in using hydrogen as a renewable and clean source of energy. Simulating the properties of such systems requires accurate electronic structure and molecular dynamics methods.

Nano Lett. 8, 767 (2008)
Cover feature of Nano Letters, March 2008 issue, March 12, 2008
Featured in Nanowerk Nanotechnology Portal, Oct. 19, 2007
Featured in EurekAlert, March 20, 2008

 

- Nanostructured fluids phase transition and electrorheology

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Nanostructured fluids possess novel characteristics and immense potentials. Controlling phase transition in nanostructured fluids is a key to their application. Phase transition in nanotube suspensions, e.g., can be controlled by applying electric field. A wide range of applications can be considered, for example superior dampers, heat and charge transfer , as well as cancer therapy.

Phys. Rev. B 77, 205432 (2008)

- Nanosensors

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When the unique electronic and transport properties of nanoscale systems are combined with their affinity for various molecules, nanosensor functionality will be the natural result. Changes in electronic transport properties of nanotubes as a result of gas molecules adsorption, e.g., are shown to provide superior sensor potentials.

Nano Research 7, 945 (2014)
RSC Adv. 4, 2346 (2014)
J. Phys. Chem. C. 117, 12815 (2013)
J. Phys.: Condens. Matter 25, 115303 (2013)
Appl. Phys. Lett. 92, 022103 (2008)

 

 

 


 

 

- Nanoelectromechanical systems

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Mechanical properties of nanometer scale systems exhibit unique features which can be exploited for novel applications. Seamless and reversible bending of systems such as nanotubes can be used together with their transport properties in order to design
nanoelectromechanical sensors and switches.

J. Phys.: Condens. Matter 25, 115303 (2013)
Physica E 22, 675 (2004)
Phys. Rev. B 67, 205423 (2003)

- Activated processes

Some of the most important processes which occur in nature or in labs are activated; i.e., they do not proceed without an activating force, as the reactants and products are separated by an energy barrier. Simulating such physical and chemical processes requires especial considerations, to effectively map their minute/hour time scales to the femtosecond/picosecond domain of accurate molecular dynamics studies.


J. Chem. Phys. 115, 6401 (2001)

 

- Nanostructured composites

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Incorporating nanoparticles, nanotubes, nanoribbons, etc. within material matrices can significantly enhance their mechanical, transport and optical properties. Same kinds of significant changes occur in nanoscale systems when they are doped with individual atoms and ions or with atomic clusters.

J. Phys. Chem. C. 116, 22916 (2012)
Chem. Phys. Lett. 511, 101 (2011)
Phys. Rev. B 78, 155427 (2008)
Phys. Rev. B 68, 075410 (2003)
J. Chem. Phys. 111, 2164 (1999)
Featured in the front page of Japanese newspaper Nikkan Kogyo Shimbun (Business and Technology), Nov. 21, 2001