http://thesciencein.org/journal/index.php/jmns/issue/feed Journal of Materials NanoScience 2020-06-29T04:08:11+00:00 Editorial, J Material NanoScience pubs@thesciencein.org Open Journal Systems <p>Journal of Materials NanoScience is a peer reviewed international journal for publication of high impact quality research articles in field of NanoScience, Nanotechnology, Nanomaterials, Nanobiotechnology, Nanomedicine, and research at nanoscale towards development of smart materials.</p> http://thesciencein.org/journal/index.php/jmns/article/view/97 Role of polarized tip-enhanced Raman spectroscopy in the enhancement of interface optical phonon modes in AlGaN multi-quantum wells 2020-01-09T15:18:01+00:00 A.K. Sivadasan sivankondazhy@gmail.com Prajit Dhara prajitdhara1@gmail.com Chirantan Singha chirantansingha87@gmail.com Raktima Basu raktimabasu14@gmail.com Santanu Parida santanuparida026@gmail.com A. Bhattacharyya anirban1@gmail.com Kishore K. Madapu madupu@igcar.gov.in Sandip Dhara s_dhara2001@yahoo.com <p>Group III nitride based two-dimensional multi-quantum well (MQW) nanostructures find remarkable applications in the visible to ultraviolet light sources. The interface optical (IFO) phonon modes in a <em>c</em>-axis oriented superlattice of [Al<sub>0.35</sub>Ga<sub>0.65</sub>N (~1.75 nm)/Al<sub>0.55</sub>Ga<sub>0.45</sub>N (~2nm)]<sub>20 </sub>MQWs are observed using tip-enhanced Raman spectroscopic (TERS) studies. The near-field studies using TERS probe with an Au spherical nanoparticle of ~ 200 nm&nbsp;diameter were carried out at ambient conditions showing approximately two to three orders of enhancement in the Raman intensities.&nbsp; The interface phonon mode belonging to <em>E</em><sub>1</sub> symmetry [IFO(<em>E</em><sub>1</sub>)] vibrating normal to the <em>c</em>-axis of MQWs appeared to be more prominent in the case of TERS measurement compared to that for the other interface phonon mode of <em>A</em><sub>1</sub> symmetry. The confined electric field of the polarized electro-magnetic excitation using TERS probe, parallel to the plane of the interface of MQW, is made responsible for the plasmonic enhancement of IFO(<em>E</em><sub>1</sub>) phonon mode. The confinement was verified using finite-difference time-domain simulation.</p> 2020-01-02T00:00:00+00:00 Copyright (c) 2020 ScienceIn Publishing http://thesciencein.org/journal/index.php/jmns/article/view/99 Curcumin loaded Silica Nanoparticles and their therapeutic applications: A review 2020-01-15T02:04:39+00:00 Parul Pant parulpant@hrc.du.ac.in Chetna Gupta chetnagupta@hrc.du.ac.in Sagar Kumar sagarkumar@iisc.ac.in Apoorva Grewal apoorva.grewal@gmail.com Shivani Garg shivanigarg9968@gmail.com Aishwarya Rai aishwaryarai0208@gmail.com <p>Silica nanoparticles offer a promising platform for the delivery of drugs, in particular for the drugs which lack water solubility, target capability and have non-specific distribution, systematic toxicity and low therapeutic index. In this review, we focus on the synthesis and therapeutic (particularly, anti-cancer) applications of Curcumin loaded Silica Nanoparticles. Various surface modifications of silica nanoparticles have been discussed that are used to enhance their therapeutic applications. The characterization techniques and study of their biocompatibility have also been presented.</p> 2020-01-06T00:00:00+00:00 Copyright (c) 2020 ScienceIn Publishing http://thesciencein.org/journal/index.php/jmns/article/view/126 Doxorubicin-loaded magnetic nanoparticles downregulate expression of anti-apoptotic genes in resistant breast cancer cells 2020-06-29T04:08:11+00:00 syalcin@ahievran.edu.tr Pelin Mutlu pelinkaya78@yahoo.com gozdeunsoy@hotmail.com Rouhollah Khodadust hodadust_r@yahoo.com Ufuk Gunduz ufukg@metu.edu.tr 2020-06-22T00:00:00+00:00 Copyright (c) 2020 ScienceIn Publishing http://thesciencein.org/journal/index.php/jmns/article/view/125 Synthesis of blue light emitting 5-carboxylicacid-2-arylsubstituted benzimidazoles as photosensitizers for dye-sensitized solar cells 2020-06-26T10:38:06+00:00 T.V.B. Nagaveni manimohanvb@gmail.com K.M. Mahadevan mahadevan@kuvempu.ac.in Ravikumar Naik naikravi7@gmail.com T.O. Shrungesh Kumara shrungesh04@gmail.com <p>A series of 5-Carboxylic Acid-2-Aryl substituted Benzimidazoles <strong>3a-c</strong>, were synthesized and their Photo- physical, Electrochemical and DSSCs performance were studied. The UV-vis absorption and Photoluminescence (PL) Spectra of the compounds <strong>3b</strong> and <strong>3c</strong> exhibited intense deep-blue emissions with PL maximum at around 380, 382 and 400 nm (Fig. 3). Incidentally, their PL quantum yields (?f) in solutions were found to be 0.36, 041 and 0.46 respectively. Thus, their emission spectrum displayed a broad FWHM feature extending to a longer-wavelength region, promoting the <em>y </em>value of the CIE resulting in a sky-blue emission of the Dyes <strong>3a-c</strong>. Further, the good thermal stability and small FWHMs of the dyes <strong>3a-c</strong> indicates as promising compounds for deep-blue emitters in OLEDs. The Photovoltaic performances of the Solar Cells fabricated from the prepared Electrodes under AM1.5 Solar irradiation (85&nbsp;mW/cm<sup>2</sup>) are shown in Fig.&nbsp;6. The Short-circuit Current Density (<em>J</em><sub>SC</sub>), Open-circuit Voltage (<em>V</em><sub>OC</sub>), Fill Factor (FF) and overall Conversion Efficiency (<em>?</em>) clearly reveals that the Dye <strong>3c</strong> shows higher efficiency (2.87 %) contributed by high value of <em>J</em><sub>SC</sub>, <em>V</em><sub>OC</sub> and FF.</p> 2020-06-25T00:00:00+00:00 Copyright (c) 2020 ScienceIn Publishing