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AIR FORCE OFFICE OF SCIENTIFIC RESEARCH PROJECT

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Laser deposition of polymer Nanocomposite films, PI: Dr. Abdalla Darwish, Dillard University, Grant number FA9550-12-1-0068

 

Objective: The main objective is to produce operationally feasible polymer nanocomposite films for  sensor  and light emitting applications using the new invention of double pulsed laser deposition (DPLD) and cocurrent  DPLD and MAPLE for organic materials.

 

Approach: Polymer nanocomposites will be fabricated using the matrix-assisted Double  pulsed laser evaporation  ( D MAPLE) with new  double Target design, resonance infra-red PLD (RIR-DPLD) and RIR-MAPLE. Fabricated nanocomposites will be characterized using the reflected high energy electron diffraction (RHEED), UV-visible optical absorption spectroscopy, atomic force microscopy (AFM), Fourier transform infra-red (FTIR) absorption spectroscopy, XRF, XRD, SEM and TEM and tested as chemical sensors and light emitters. 

 

 

 

Uniqueness of approaches :

 

1.Using the Double-pulsed laser deposition with concurrent MAPLE ( 5 Patents pending )
2.Composite targets will be prepared by freezing nanocolloids of metals and RE compounds in polymer solutions in organic solvents.
3.Polydispersed targets of frozen polymer solution and ice will used for RIR-MAPLE with tunable optical parametric oscillator source (MAPLE New Design)

 

Significance of results

 

The project will open new avenues for fabrication of advanced polymer nanocomosites for chemical sensors, light emitters, and other applications.

 

 

Second Project which is funded by the Army Research Lab and the AFOSR 

 

 

 

Goal of the project:

 

The prime goal is to find the optimal conditions of the patented multi-beam pulsed laser depostion (MB-PLD) process to enhance the figure-of-merit ZT of nanocomposite AZO-based films

 

Objectives:

 

1. Fabrication of thermoelectric inorganic-polymer  nanocomposite  AZO films using MB-PLD.

2. Characterization of the films in terms of their structure, composition, and thermoelectric properties.

3. Analysis of the experimental data and improving the process in order to increase ZT .

4. Reporting and dissemination.

5. Training four undergraduate STEM students at Dillard through the participation in the project.

 

Approaches to be utilized.

 

1. The thermoelectric nanocomposite AZO films will be deposited using MB-PLD process invented by PI.

2. The analysis of the films will be conducted using XRD,  XRF, AFM, and FTIR. Also will be measured: electroconductivity, Seebeck coefficient , and thermoconductivity.

3. Performance parameters of the films: temperature of the substrate;  electroconductivity; Seebeck coefficient; thermoconductivity; temperature difference between contacts; and the figure-of-merit ZT will be obtained and compared against those of pure AZO films and used to optimize the deposition process parameters in order to maximize figure-of-merit ZT.

 

 

Anticipated outcomes:

 

1. New capabilities in PLD and characterization of TE materials will be further developed at Dillard University.

2. Four undergraduate STEM students will be trained.

3. Impact on DoD:

a) Novel approaches to nanocomposite thermoelectric energy harvesters will be explored in line with the current Air Force interests  in “material concepts that will provide low thermal conductivity but high electrical conductivity (thermoelectric) … ” (BAA-AFOSR-2014-01, p.43)

b) The project matches the needs of the Electronic and Optical Materials and Devices (Code 6364) Branch of NRL that has PLD as its core competences (http://www.nrl.navy.mil/mstd/branches/6360/6364).

 

Some of the Publications (For complete list and download please see WWW.researchgate.net/abdalla_darwish: 

 

1. Abdalla Darwish, Simeon Wilson, Dillard Univ.; Brent Koplitz, Tulane Univ. ,) Pulsed laser deposition of epitaxial BaFeO3 thin films. Published in Proceedings Volume 8120: Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications September 2011.
2. Abdalla M. Darwish, Simeon Wilson, Hadi Alkahby, Dillard Univ.; Brent Koplitz, Tulane Univ. . Preparation of BaTiO3 thin films by double-pulse-lasers deposition. Published in Proceedings Volume 8120: Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VII September 2011.
3.      Abdalla M Darwish, Michael Tavita Sagapolutele, Simeon Wilson, Sergey Sarkisov, Darayas Patel, Brent Koplitz, and David Hui, Double pulse laser deposition of polymer nonocomposite films for optical sensors and light emitting applications, Proceedings of ICCE-21 (Twenty first annual internal conference on composite/nano Engineering, Edited by David Hui, July 21-27, 2013 Tenerife, Canary Islands, Spain, Paper 181.

4. Abdalla M. Darwish, Simeon Wilson, Dillard Univ., Sergey Sarkisov, SSS Optical Technologies ; Darayas Patel, Oakwood Univ. Double pulse laser deposition of polymer nanocomposite: NaYF4:Tm3+,Yb3+ films for optical sensors and light emitting applications SPIE Proceedings Volume 8847: Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VII.  2013.
5.      Abdalla M. Darwish, Michael Tavita Sagapolutele, Sergey Sarkisov, Darayas Patel, David Hui, and Brent Koplitz, Double beam pulsed laser deposition of composite films of poly(methyl methacrylate) and rare earth fluoride upconversion phosphors, Composites Part B: Engineering, Volume 55, December 2013, Pages 139–146.

6.      Abdalla M Darwish, Simeon Wilson, Ashley Blackwell, Keylantra Taylor, Sergey Sarkisov, Darayas Patel, Brent Koplitz, and David Hui, New double-beam matrix assisted pulsed laser evaporation (DB-MAPLE) method for making polymer nano-composite coatings, Proceedings of ICCE-22, Twenty Second Annual International Conference on Composites or Nano-Engineering, Edited by David Hui, July 13-19, 2014, Malta.

7.      Darwish with Miyoshi Yokura;  Toshiki Mori, Hiroyuki Takijiri , Hiroki Yamamot, Kazuki Yamaji, Kenta Inagaki, Kazuya Hanada (Mie University, Japan), David Hui UNO, Abdalla Darwish Dillard University, Mircea Chipara U Texas Pan American, Paolo Mele Hiroshima University , Kazuhiro Endo Kanazawa Inst. Tech., Japan , Tamio Endo Mie University, Japan “ Breaking of ether bonding of PET by plasma irradiation and its recovery by heating characterized by ATR-FTIR” Proceedings of ICCE-22, Twenty Second Annual International Conference on Composites or Nano-Engineering, Edited by David Hui, July 13-19, 2014, Malta.

8. Abdalla M. Darwish, Dillard Univ. Allan Burkett, Dillard Univ , Ashley Blackwell, Keylantra Taylor, Dillard Univ.  Vernell Walker, Dillard Univ; Sergey S. Sarkisov, SSS Optical Technologies, LLC ; Brent Koplitz, Tulane Univ. ,Efficient upconversion polymer-inorganic nanocomposite thin film emitters prepared by the double beam matrix assisted pulsed laser evaporation (DB-MAPLE). SPIE Proceedings Volume 9200: Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VIII  2014.
9. Abdalla Darwish with Darayas N. Patel, Ashley Lewis, Donald Wright III, Danielle Lewis, Oakwood Univ. ,); Rueben Valentine, Oakwood Univ.; Maucus Valentine, Dennis Wessley, Oakwood Univ. ,); Sergey Sarkisov, SSS Optical Technologies, LLC  . Optical properties and size distribution of the nanocolloids made of rare-earth ion-doped NaYF4 SPIE Proceedings Volume 9359: Optical Components and Materials XII. April 2015.
10.  Abdalla M. Darwish, Simeon Wilson, Ashley Blackwell, Keylantra Taylor, Sergey S. Sarkisov, Darayas N. Patel, and Brent Koplitz, Ammonia Sensor based on polymer-inorganic nano-composite thin film upconversion light emitter prepared by double-beam pulsed laser deposition, American J. of Materials Sciences 5(3A) (2015), 8-15.

11. Abdalla M. Darwish, Allan Burkett, Ashley Blackwell, Keylantra Taylor, Sergey Sarkisov, Darayas Patel, Brent Koplitz, and David Hui, Polymer-inorganic nano-composite thin film upconversion light emitters prepared by double-beam matrix assisted pulsed laser evaporation (DB-MAPLE) method, Composites Part B 68 (2015), 355–364
12. Abdalla M. Darwish, Simeon Wilson, Ashely Blackwell, Keylantra Taylor, Dillard Univ. ; Sergey Sarkisov, SSS Optical Technologies, LLC ; Darayas Patel, Oakwood Univ. ; Paolo Mele, Muroran Institute of Technology (Japan); Brent Koplitz, Tulane Univ.  Multi-beam pulsed laser deposition: new method of making nanocomposite coatings Published in Proceedings Volume 9586: Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications IX. September 2015.
13. Abdalla M. Darwish, Simeon Wilson, Ashley Blackwell, Keylantra Taylor, Dillard Univ. ; Sergey Sarkisov, SSS Optical Technologies, LLC ; Darayas Patel, Oakwood Univ. ; Paolo Mele, Muroran Institute of Technology (Japan); Michael W. Johnson, Xiaodong Zhang, Brent Koplitz, Polymer-inorganic nanocomposite thin film emitters, optoelectronic chemical sensors, and energy harvesters produced by multiple-beam pulsed laser deposition Published in Proceedings Volume 9586: Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications IX September 2015.
 

Patents Pending:

 

1.      Abdalla Darwish and Sergey Sarkisov, Method and apparatus fro multi-beam pulsed laser deposition of thin films, US Provisional Patent Application No. 61/850,330. Filed 2/14/2013.

2.      Abdalla Darwish, Paolo Mele, and Sergey Sarkisov, Nano-composite thermo-electric energy harvester and fabrication method thereof, Provisional Patent Application No. 62/071,116, Filed 9/15/2014.

3.      Abdalla Darwish and Sergey Sarkisov, Multiple beam pulsed laser deposition of composite films, US Patent Application  No. US 14/158,567, Priority date Feb 14, 2013, Publication No. US 20140227461 A1. Continuation in Parts. Filed 10/5/2014.

4.      Abdalla Darwish, Paolo Mele, and Sergey Sarkisov,  thermo-electric energy harvester and fabrication method thereof,  continuation in  parts with the  Provisional Patent Application No. 62/071,116, Filed 9/15/2014

 Abdalla Darwish, Paolo Mele, and Sergey Sarkisov, Nano-composite thermo-electric energy converter and fabrication method thereof, US Patent Application No. 14/853,674, Filed 9/14/2015.
Abdalla Darwish and Sergey Sarkisov, Method and apparatus for open-air multi-beam multi-target pulsed laser deposition, US Provisional Patent Application number 62/389,086, Submitted 2/12/2016.

 

 

Research and Educational infrastructure in the physics signature program includes the following:

¨ Atomic Force Microscope

¨ FTIR Fourier Transform Infrared Spectrometer

¨ X-ray Diffraction machine

¨ X-ray Fluorescence machine

¨ Princeton Spectrometer, Rahman Spectrometer

¨ High Speed camera (One million frames/sec)

¨ Lasers:

¨ Nd:YAG pulse laser 10Hz, Nd:YAG pulse laser 50Hz,

¨ OPO: Optical parametic  Oscillator

¨ Carbon Dioxide Laser continuous and pulse

¨ Helium Neon lasers

¨ Argon laser

¨ Pulsed laser ablation chamber 12 inch and 18 inch

 .. SEM and TEM

 

For more information of the projects, Please contact Dr. Abdalla Darwish 

adarwish@dillard.edu

 

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Dillard University

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