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  • News

Surface states matters (Carbon 183, 2021, 1)

28th August 2021 by Davide Mariotti

Nitrogen-doped carbon quantum dots are synthesized by a one-step atmospheric pressure microplasma process. The origin of the observed photoluminescence emission and its relationship with nitrogen doping is studied using a range of optical and chemical measurements along with verification by theoretical calculations (Carbon 183, 2021, 1).

Filed Under: News

Carrier extraction from metallic perovskite (Nanoscale 13, 2021, 12271)

28th August 2021 by Davide Mariotti

We observe the extraction of carriers in a perovskite oxide with metallic behaviour and high conductivity, whilst also displaying broad absorption across the ultraviolet, visible, and near-infrared spectral regions, making it an attractive material for solar energy conversion. Furthermore, the optoelectronic properties of strontium niobate can easily be tuned by varying the Sr fraction or through doping (Nanoscale 21, 2021, 12271).

Filed Under: News

Understanding plasma-ethanol interactions (Green Chemistry 23, 2021, 3983)

4th July 2021 by Davide Mariotti

Plasma-electrochemistry has been successfully used to synthesize a range of metal–oxide nanoparticles and quantum dots (QDs). While nanoparticles and QDs can be an end to this process, they can also be viewed as ‘chemical probes’ that help understanding the underlying and progenitor chemical reactions. We have therefore studied plasma–ethanol interactions during the synthesis of CuO QDs (Green Chemistry 23, 2021, 3983).

Filed Under: News

Copper nanoparticles & CNT composite materials (Nanoscale Adv 3, 2021, 781)

22nd February 2021 by Davide Mariotti

Copper nanoparticles (Cu-NPs) represent a viable low-cost alternative to replace bulk copper or other more expensive NPs (e.g. gold or silver) in various applications. This study deals with the synthesis of well dispersed Cu-NPs by using an Ar + H2 microplasma using a solid copper precursor.The Cu-NPs were successfully deposited onto porous carbon nanotube ribbons; surface coverage and the penetration depth of the Cu-NPs inside the CNT ribbon structure were investigated as these can be beneficial for a number of applications (Nanoscale Advanced 3, 2021, 781).

Filed Under: News

Dissociation of tetramethylsilane in a plasma (Plasma Process Polym 17, 2020, 1900243)

4th January 2021 by Davide Mariotti

Residual gases analysis after dissociation of tetramethylsilane (TMS) during the synthesis of silicon carbide (SiC) nanocrystals (NCs) by an atmospheric pressure microplasma was used to provide details that can contribute to the understanding of the formation mechanisms of NCs (Plasma Processes and Polymers 17, 2020, 1900243).

Filed Under: News

School of Engineering Twitter

30th December 2020 by Davide Mariotti

Professor Davide Mariotti has been ranked in the top 2% of World Scientists, and top UU expert in Applied physics, Nanoscience and Nanotechnology (@UUEngineering).

Filed Under: News

Band energy of c-Si and a-Si nanoparticles (Faraday Discussions 222, 2020, 390)

18th August 2020 by Davide Mariotti

The relationship between the crystallization process and opto-electronic properties of silicon quantum dots (Si QDs) synthesized by atmospheric pressure plasmas (APPs) is studied in this work. We measure the ultraviolet-visible optical properties and electronic properties through various techniques, build an energy level diagram for the valence electrons region as a function of the crystallinity of the QDs, and finally discuss the integration of these as active layers of all-inorganic solar cells (Faraday Discussions 222, 2020, 390).

Filed Under: News

Solar-thermal energy conversion with NPs (Solar Energy 203, 2020, 37)

6th May 2020 by Davide Mariotti

Nanofluids comprised of nanoparticles in ethylene glycol have been prepared. The energy absorptive properties of the prepared nanofluids were investigated as a potential additive to the traditional working fluids used in solar thermal collectors. The application feasibility has been assessed by calculating a value of power which could be transferred to the thermal
fluid (Solar Energy 203, 2020, 37).

Filed Under: News

OH-terminated ZnO QDs (Nanotechnology 31, 2020, 215707)

6th April 2020 by Davide Mariotti

Strongly confined ligand-free, defect-free, hydroxy terminated ZnO quantum dots with a mean diameter of 1.9 nm were synthesized by radio frequency atmospheric pressure microplasma. Photoluminescence studies show strong confinement effect on emission with only ultraviolet (UV) emission without any defect-related visible emission. The mechanism responsible for this UV emission is also discussed and originates from OH-related surface terminations (Nanotechnology 31, 2020, 215707).

Filed Under: News

Enhance solar cell stability with Si NCs (Nanoscale Adv 1, 2019, 4683)

29th February 2020 by Davide Mariotti

Highly stable zero-dimensional (CH3NH3)3Bi2I9 photovoltaic cells which demonstrate a 33% increase in performance after 2 years when hybridized with silicon nanocrystals (SiNCs) (Nanoscale Advances 1, 2019, 4683).

Filed Under: News

Next Page »
Plasma Science and Technology > Materials Processing and Nanotechnology > Energy and Environment

News and Events

  • Surface states matters (Carbon 183, 2021, 1)
  • Carrier extraction from metallic perovskite (Nanoscale 13, 2021, 12271)
  • Understanding plasma-ethanol interactions (Green Chemistry 23, 2021, 3983)
  • Copper nanoparticles & CNT composite materials (Nanoscale Adv 3, 2021, 781)
  • Dissociation of tetramethylsilane in a plasma (Plasma Process Polym 17, 2020, 1900243)

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