Dr David Carey

Research Interests

Research Publications & Invited Conference Presentations

1. Engineering tunable single and dual optical emission from Ru(II)-polypydridyl complexes through excited state design, J. Romanova, Y Sadik, M.R.R.Prabhath, J David Carey and P.D. Jarowski, J. Phys. Chem. C 121, 2333 (2017).

2. (Opening Invited Lecture) Presented the Opening Lecture at the NanoteC16 on '2D and Related Materials: From Production to Advanced Electronic Applications'. 

3. New hybrid materials: Organic-inorganic hybrid cathodes: Facile synthesis of polypyrrole/zinc oxide nanofibers for low turn-on electron field emitters, Ishpal Rawal, J David Carey, O.S. Panwar, R.K. Tripathi, RSC Advances 6, 46372 (2016).

4. Graphene and GHz and THz frequencies: Engineering Graphene Conductivity for Flexible and High-Frequency Applications, Alexander J Samuels and J David Carey, ACS Appl. Mater. Interfaces 7, 22246 (2015).

5.New route to CNT growth High Quality Carbon Nanotubes on Conductive Substrates Grown at Low Temperatures, Muhammad Ahmad, Jose V. Anguita, Vlad Stolojan, Tony Corless, Jeng-Shiung Chen, J. David Carey and S. Ravi P. Silva, Adv. Funct. Mater. 25, 4419 (2015).

6. Best Poster Award Research student Piers Turner wins the Best Poster Prize at NanoteC 2015 (Oxford University).

7. GUEST Editor Special issue of the Journal of Nanomaterials on Functional Nanomaterials for Electronics, Optoelectronics and Bioelectronics (2015).           

8. 2D Materials research: Our research on elemental two dimensional layered materials was presented at MRS Spring 2015 meeting. You can hear the talk and view the slides via the MRS OnDemand(R) service at Atomic Structure and Monolayer Stability in 2D Elemental Layered Materials: Silicene and Germanene.

9. (Research Highlight) Beyond Graphene: Stable Elemental Monolayers of Silicene and Germanene, Nathanael J Roome and J David Carey, ACS Appl. Mater. Interfaces 6, 7743 (2014).

10. (Research Highlight) Electrical transport in metal-carbon hybrid multijunction devices, Neeraj Dwivedi, Sushil Kumar, J. David Carey and Hitendra K. Malik, Diam. Relat. Mater. 48, 82-87 (2014)

11. INVITED Plenary Lecture Presented Opening plenary Lecture at the 8th Microwave Materials and Applications Conference, Boise, Idaho, June 2014. The title of the lecture was 'High Frequency Characterisation of Graphene, Carbon Nanotubes and Nanometals'.

12. BEST Paper Prize Our 2013 paper J Phys Chem B paper Influence of Acoustic Cavitation on the Controlled Ultrasonic Dispersion of Carbon Nanotubes’, has been awarded the 2014 NPL Rutherford Prize. The judges commented that the work was "performed with high scientific rigor and an accurate metrological approach resulting in potential impact for the characterization of nanomaterial dispersion". The research was funded by the Engineering Physical Sciences Research Council as part of the Micro- and NanoMaterials and Technologies Centre for Doctoral Training. Further details here.

Current Research Interests

1. Graphene and Beyond Graphene: 2D Layered Materials, band gap engineering, doping and characterisation 

  • Molecular doping of graphene to enhance the high frequency conductivity from DC, through GHz to THz and published in ACS Applied Materials and Interfaces.
  • Structural characterisation and electron-phonon matrix element calculations in planar and buckled silicene and germanene monolayers published in ACS Applied Materials and Interfaces.
  • DFT calculations of molecular doping of bilayer graphene, ACS Nano, where we show how to open an electrical band gap of up to 150 meV in AB stacked BLG using molecular dopants.
  • Electrical and Raman characterisation of low substrate temperature (415oC) photothermal chemical vapour deposition of graphene on Cu. Using an optical source it is possible to efficiently couple energy into the metal catalyst growth surface while the substrate is held at over 250oC lower in temperature. 

2. Metallic nanoparticles for high frequency electronics and antennas: We have shown, published in ACS Applied Materials, that the high frequency (up to 220 GHz) electrical losses of screen printed mm-long coplanar waveguide structures of metallic silver nanoparticles are lower than that of conventional thick-film paste micron-sized silver grains due to the better packing and the smoother surface. The use of metallic nanoparticles in this way may offer a route to efficient, flexible conformal antennas.

3. Carbon Nanotube Science and Engineering:

  • Recent studies of the production of high density forests of carbon nanotubes for interconnects vias grown on conductive TiN substates.  
  • In collaboration with the UK's National Physical Laboratory, we have been looking at cavitation effects in the dispersion and controlled length reduction of nanotubes. In this study, published in J. Phys. Chem. B, we distinguish between stable cavitation, which leads to chemical modification of the surface of the CNTs, and inertial cavitation, which favours CNT exfoliation and length reduction. Efficient dispersion of CNTs in aqueous solution is found to be dominated by mechanical forces generated via inertial cavitation, which in turn depends critically on surfactant concentration.

4. Quantum Technology based on Rare Earth Ions in Silicon: The first study of Er3+ centres in oxygen co-implanted Si and the identification of the monoclinic symmetry defect centre and  how O and F co-implantation affected the ESR and photoluminescence properties in Si. This work was followed up by an examination of the validity of the cubic crystal field approximation for trigonal and tetragonal symmetry erbium 3+ centres.

PhD positions are available to highly qualified candidates in all of the above areas, especially in 2D materials, DFT, condensed matter physics or solid state electronics.

Teaching

Current or recent lecture courses
1. Nanoelectronics and Devices (EEEM022) to MEng and MSc students (FHEQ Level 7).

2. Nanoscience and Nanotechnology (EEE3037) to year 3 undergraduate students (FHEQ Level 6).

3. Semiconductor Devices and Optoelectronics (EEE3041) to year 3 undergraduate students (FHEQ Level 6).

4. Digital Engineering and Integrated Circuits (EEE2034) to year 2 undergraduate students (FHEQ Level 5)

 

Past modules include

1.  Electronic Devices and Integrated Circuits (FHEQ Level 5).

2.  Introduction to Computer Logic (FHEQ Level 4).

Departmental Duties

Head of Department

Chair of Department Board of Examiners

PhD Research Positions

For a PhD position you will normally require a good Honours degree or MSc in Electronic Engineering, Physics or Materials. Current PhD positions include

1. Graphene and graphene electronics : This project will use ab initio density functional theory to examine the electronic properties of graphene and related materials such as bilayer graphene in the presence of atoms and molecules. The project will examine how adsorption induces changes the carrier concentration (doping) of graphene and identify donor or acceptor behaviour; how the electronic and optical band gap depends on the type of species adsorbed and their concentration and how the electronic properties such band structure, density of states and transport properties change with adsorption.

2. Electronic and Structural Properties of 2D Nanomaterials: This project will use ab initio density functional theory to examine the electronic properties of 2D layered materials such as graphene, silicene, germanene, stanene and MoS2 and related materials.  The project will calculate the electronic properties such band structure and the density of states and how they will change adsorption. The project will also examine the interaction between electrons and phonons in these materials. 

See PhD project list here for more information.  Both experimental and theoretical projects in the areas of graphene, bilayer graphene and other layered materials; high field and high frequency characterization of nanomaterials. 

Other information

  • Fellow of the Higher Education Academy.
  • Member of the Institute of Physics, Member of Institute of Engineering Technology, Member of the American Physical Society.
  • Member of the EPSRC Peer Review College.
  • External Examiner, University of Ulster (2011 - 2014).
  • Member of the Committee of Visitors to the Division of Materials Research, US National Science Foundation
  • Guest Editor of the Journal of Nanomaterials on Functional Nanomaterials for Electronics, Optoelectronics and Bioelectronics                          

Contact Me

E-mail:
Phone: 01483 68 6089

Find me on campus
Room: 09 BB 04

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Publications

Here is a list of some recent research papers with links; a more complete list of peer-reviewed publications can be found via the Google Scholar website.

  1. Engineering tunable single and dual optical emission from Ru(II)-polypydridyl complexes through excited state design, J. Romanova, Y Sadik, M.R.R.Prabhath, J David Carey and P.D. Jarowski, J. Phys. Chem. C 121, 2333 (2017).
  2. Orgnic-inorganic hybrid cathodes: Facile synthesis of polypyrrole/zinc oxide nanofibers for low turn-on electron field emitters, Ishpal Rawal, J David Carey, O.S. Panwar, R.K. Tripathi, RSC Advances 6, 46372 (2016).
  3. Engineering Graphene Conductivity for Flexible and High-Frequency Applications, Alexander J Samuels and J David Carey, ACS Appl. Mater. Interfaces 7, 22246 (2015).
  4. High Quality Carbon Nanotubes on Conductive Substrates Grown at Low Temperatures, Muhammad Ahmad, Jose V. Anguita, Vlad Stolojan, Tony Corless, Jeng-Shiung Chen, J. David Carey and S. Ravi P. Silva, Adv. Funct. Mater. 25, 4419 (2015).
  5. Crystal field analysis of Dy and Tm implanted Silicon for Photonic and Quantum Technologies,Mark A Hughes, Manon A Lourenço, J David Carey, B N Murdin, and K P Homewood, Optics Express 22, 29292 (2014).
  6. Electrical Transport in Metal-carbon Hybrid Multi-junction Devices, Neeraj Dwivedi, Sushil Kumar, J. David Carey and Hitendra K. Malik, Diam. Relat. Mater. 48, 82-87 (2014). Local copy available here
  7. Beyond Graphene: Stable Elemental Monolayers of Silicene and Germanene, Nathanael J Roome and J David Carey, ACS Appl. Mater. Interfaces 6, 7743 (2014).
  8. Influence of Acoustic Cavitation on the Controlled Ultrasonic Dispersion of Carbon Nanotubes, Achilleas Sesis, Mark Hodnett, Gianluca Memoli, Andrew John Wain, Izabela Jurewicz, Alan B. Dalton, J David Carey, and Gareth Hinds, J. Phys. Chem. B 117, 15414 (2013).   This paper was awarded the 2014 NPL Rutherford Prize.
  9. Molecular Doping and Band Gap Opening of Bilayer Graphene, Alexander J. Samuels and J. David Carey, ACS Nano 7, 2790 (2013). Local copy available here.
  10. Efficient coupling of optical energy for rapid catalyzed nanomaterial growth: High quality carbon nanotube synthesis at low substrate temperatures, Muhammad Ahmad, Jose V. Anguita, Vlad Stolojan, J. David Carey and S. Ravi P. Silva, ACS Appl. Mater. Interfaces 5, 3861 (2013).
  11. Influence of Silver Incorporation on the Structural and Electrical Properties of Diamond-Like Carbon Thin Films, Neeraj Dwivedi, Sushil Kumar, J. David Carey, R. K. Tripathi, Hitendra K. Malik and  M. K. Dalai, ACS Appl. Mater. Interfaces 5, 2725 (2013). Local copy available here.
  12. Enhanced Electrical Conductivity of Silver Nanoparticles for High Frequency Electronic Applications, Ali H. Alshehri, Malgorzata Jakubowska, Anna Młożniak, Michal Horaczek, Diana Rudka, Charles Free and J. David Carey, ACS Appl. Mater. Interfaces 4, 7007 (2012). Local copy available here.
  13. Photoconductivity and Characterization of Nitrogen Incorporated Hydrogenated Amorphous Carbon Thin Films, Neeraj Dwivedi, Sushil Kumara, J. D. Carey, Hitendra K. Malik and Govind, J. Appl. Phys.112, 113706 (2012). Local copy available here.
  14. Structural and Electronic Characterization of Nanocrystalline Diamond-Like Carbon Thin Films, Neeraj Dwivedi, Sushil Kumara, R. K. Tripathi, J David Carey, Hitendra K. Malik and M. K. Dalai, ACS Appl. Mater. Interfaces 4, 5309 (2012). Local version available here.
  15. Photo-thermal chemical vapor deposition growth of graphene, Y.Y. Tan, K.D.G.I. Jayawardena, A.A.D.T. Adikaari, L.W. Tan, J.V. Anguita, S.J. Henley, V. Stolojan, J.David Carey, S.R.P. Silva, Carbon 50, 668 (2012). Local version available here.
  16. Electrical Performance of Carbon Nanotube – Polymer Composites at Frequencies up to 220 GHz, Ali H. Alshehri, Malgorzata Jakubowska, Marcin Sloma, Michal Horaczek, Diana Rudka, Charles Free and J. David Carey, Appl. Phys. Lett. 99, 153109 (2011). Local version available here.

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