UV-Blue Light Emission from ZnO Nanoparticles

Senthilkumar, O.; Yamauchi, Kenta; Senthilkumar, K.; Yamamae, Takahiro; Fujita, Yasuhisa; Nishimoto, Norihiro

doi:10.3938/jkps.53.46

Cited by 20 publications

(20 citation statements)

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“…ZnO nanoparticles have been grown by inexpensive techniques such as gas evaporation and chemical methods [4,5]. Although the fabrication of p-type ZnO is difficult due to the self-compensation effect by intrinsic defects, fabrication of p-type ZnO nanoparticles by the gas evaporation method has been reported [6]. On the other hand, ZnO thin films with good properties have been grown by pulsed laser deposition (PLD), metalorganic chemical vapor deposition (MOCVD), and sputtering [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of ZnO-MgO Mixed Thin Films Grown by Metal-Organic Decomposition

Nishimoto

Yoshino

Fujihara

et al. 2015

e-J. Surf. Sci. Nanotech.

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The influence of ZnO-MgO mixed metal-organic decomposition (MOD) coating materials have been investigated based on crystal growth and film properties of ZnO-MgO mixed thin films. These mixed thin films were grown on quartz substrates by dip coating and then sintered at 550• C. The film properties were evaluated using an atomic force microscope and a UV-VIS-NIR spectrophotometer, and by performing X-ray diffraction measurements. The growth mechanism is changed by MgO in ZnO-MgO mixed MOD coating materials. Mg segregated to the surface side in the ZnO-MgO mixed thin film, and some of the segregated Mg formed ZnMgO. In addition, the grain size of ZnO-MgO mixed thin films increased with an increase in the amount of MgO additive. Therefore, it can be concluded that grain boundary segregation of Mg enhances crystal growth. This enhancement of crystal growth by the intentional addition of an impurity can be applied to improving the characteristics of other semiconductor materials.

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Section: Introductionmentioning

confidence: 99%

Evaluation of ZnO-MgO Mixed Thin Films Grown by Metal-Organic Decomposition

Nishimoto

Yoshino

Fujihara

et al. 2015

e-J. Surf. Sci. Nanotech.

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“…23 The peak at 437 cm 21 in Raman spectra confirms the presence of ZnO. 33 The peaks in Raman spectra for CuO nanoparticles at 285, 333, and 618 cm 21 are also observed in the literature 34 confirming the presence of this nanoparticles. FTIR results confirm that the Si-H group in the polymer interacts strongly with the metal nanoparticles.…”

Section: Discussionmentioning

confidence: 52%

Polydimethyl siloxane based nanocomposites with antibiofilm properties for biomedical applications

Sankar

Murthy

Das

et al. 2016

J. Biomed. Mater. Res.

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Polydimethyl siloxane (PDMS) is an excellent implant material for biomedical applications, but often fails as it is prone to microbial colonization which forms biofilms. In the present study CuO, CTAB capped CuO, and ZnO nanoparticles were tested as nanofillers to enhance the antibiofilm property of PDMS against Staphylococcus aureus and Escherichia coli. In general S. aurues (Gram positive and more hydrophobic) favor PDMS surface than glass while E. coli (Gram negative and more hydrophilic) behaves in a reverse way. Incorporation of nanofillers renders the PDMS surface antibacterial and reduces the attachment of both bacteria. These surfaces are also not cytotoxic nor show any cell damage. Contact angle of the material and the cell surface hydrophobicity influenced the extent of bacterial attachment. Cell viability in biofilms was dependent on the antimicrobial property of the nanoparticles incorporated in the PDMS matrix. Simple regression relationships were able to predict the bacterial attachment and number of dead cells on these nanocomposites. Among the nanocomposites tested, PDMS incorporated with CTAB (cetyl trimethylammonium bromide)-capped CuO appears to be the best antibacterial material with good cyto-compatibility. V C 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 00B: 000-000, 2016.

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“…They possess good structural and optical characteristics. The experimental details were presented elsewhere [5]. Briefly in this technique Zn metal was used as a Zn (3N) source and air as O source.…”

Section: Experiments 21 Preparation Of Nanoparticlesmentioning

confidence: 99%

“…Such a large exciton binding energy, which is higher than the thermal energy at room temperature, ensures efficient UV-blue emission at room temperature. Thus, ZnO nanocrystals are suitable for bio-imaging applications [5]. They are environmentally friendly and suitable for in vivo bio-imaging in the UV-blue emission range.…”

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confidence: 99%

Preparation of ZnO nanoparticles for bio‐imaging applications

Senthilkumar

Yamauchi

et al. 2009

Physica Status Solidi (b)

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ZnO nanoparticles were prepared by using a gas evaporation method. As ZnO is a luminescent and less toxic material, it can be useful in imaging applications. The nanoparticles prepared in our laboratory showed intense exciton emission in the UV‐blue region. They were processed and surface treated to be compatible for bio‐conjugation. We were able to prepare good dispersions and water‐soluble ZnO nanoparticles from our experiments. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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UV-Blue Light Emission from ZnO Nanoparticles

Cited by 20 publications

References 0 publications

Evaluation of ZnO-MgO Mixed Thin Films Grown by Metal-Organic Decomposition

Evaluation of ZnO-MgO Mixed Thin Films Grown by Metal-Organic Decomposition

Polydimethyl siloxane based nanocomposites with antibiofilm properties for biomedical applications

Preparation of ZnO nanoparticles for bio‐imaging applications

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