Nanotechnology Research Center (NANOTAM)
Recent Submissions
-
Analyzing the InGaN LED structures for white LED applications
(Gazi Üniversitesi, 2017)In this paper, blue-light InGaN/GaN light-emitting diodes were deposited on sapphire substrate by the Metal Organic Chemical Vapor Deposition (MOCVD) to investigate the properties of blue LEDs with various well thickness ... -
Functional gold nanoparticle coated surfaces for CA 125 cancer biomarker detection
(TÜBİTAK, 2015)Here we describe the detailed characterization of gold nanoparticle (Au Np) functionalized surfaces as a biosensing platform by studying a model streptavidin (SA)–biotin interaction. Conjugation of SA on Au Np immobilized on ... -
Analysis of the mosaic defects in graded and non graded InxGa1‐xN solar cell structures
(Süleyman Demirel Üniversitesi, 2017)In this study, graded (A) InxGa1‐xN (10.5 ≤ x ≤ 18.4) and non graded (B) InxGa1‐xN (13.6 ≤ x ≤ 24.9) samples are grown on c‐oriented sapphire substrate using the Metal Organic Chemical Vapour Deposition (MOCVD) technique. ... -
Reply to tzoulis et al.: genetic and clinical heterogeneity of essential tremor
(National Academy of Sciences, 2015)In addressing our recent report of HTRA2 p.G399S as the gene and mutation responsible for essential tremor and subsequent Parkinson disease in a large kindred (1), Tzoulis et al. (2) screened this mutation in patients with ... -
Effects of the AlN nucleation layer thickness on the crystal structures of an AlN epilayer grown on the 6H-SiC substrate
(Taylor & Francis, 2019-04-08)The influence of the LT-AlN(NL) growth times on the mosaic structure parameters of the AlN layer grown on the LT-AlN(NL)/6H-SiC structures as well as the dislocation densities and the strain behaviours in the AlN epilayers ... -
Investigation of electronic and optical properties of wurtzite MgZnO using GGA + U formalism
(Taylor & Francis, 2019-12-04)In this study, the electronic and optical properties of wurtzite MgxZn1−xO structures for different Mg mole fractions (x) are studied using Density Functional Theory (DFT). In calculations, the generalised gradient ... -
Two-dimensional phononic band structure of archimedean-logarithmic spiral-based slabs
(Taylor & Francis, 2019-08-16)We present band structure results for elastic waves in periodic composite materials consisting of a spiral scatterer shape embedded in a uniform silicon matrix. The material of the scatterer is tungsten as a high density ... -
Multiferroic based 2D phononic crystals: band structure and wave propagations
(Taylor & Francis, 2019-08)In the present work the acoustic band structure of a two-dimensional phononic crystal containing an organic ferroelectric (PVDF- polyvinylidene fluoride) and muliferroic material (LiVCuO4) were investigated by the ... -
Electronic and elastic properties of the multiferroic crystals with the Kagome type lattices -Mn3V2O8 and Ni3V2O8: First principle calculations
(Taylor & Francis, 2019-08-16)The electronic, mechanical, and optical properties of the Kagome staircase compounds, Mn3V2O8 and Ni3V2O8, have been investigated using the VASP (Vienna ab-initio Simulation Program) that was developed within the density ... -
Strain effects and electronic structures of narrow band P-R ferroelectrics: first principles calculation
(Taylor & Francis, 2019-08-16)In the present work, the structural, mechanical, electronic and optical properties of the Ruddlesden–Popper(RP) Ba3X2S7 (X = Zr, Hf, Ti) sulfides compounds have been investigated by means of first principles calculations. ... -
Phononic band gap and wave propagation on multiferroic-based acoustic metamaterials
(Taylor & Francis, 2019-06-04)In the present work, the acoustic band structure of a two-dimensional (2D) phononic crystal containing a multiferroic and liquid were investigated by the plane-wave-expansion method. 2D PnC with triangular and honeycomb ... -
Photonic band gap of multiferroic-dielectric materials in the IR region: FDTD method
(Taylor & Francis, 2019-06-04)In this report, we present an investigation of the optical properties and band structure calculations for the photonic structures based on the multiferroic materials- BaMnF4. We calculate the photonic bands and optical ... -
Electronic properties of spin excitation in multiferroics with a spinel structure: first principles calculation
(Taylor & Francis, 2019-06-04)In the present work, the structural, electronic and mechanical properties of LiVCuO4 and LiCu2O4 spinel type multiferroics have been investigated by means of first principles calculations. The spin polarized generalized ... -
Structural, electronic, and mechanical properties of A3Mn2O7 (A = Sr, Ca): ab initio calculation
(Taylor & Francis, 2019-04-17)In the present study, the structural, electronic, optical, and mechanical properties of the Ruddlesden-Popper type oxide compounds are investigated by means of density functional theory. In our calculation, spin polarized ... -
Scattering analysis of ultrathin barrier (<7 nm) GaN‑based heterostructures
(Springer, 2019-03)In this study, two-dimensional electron gas (2DEG) mobility analysis of AlN/GaN and InAlN/GaN structures with ultrathin barrier layers by metal organic chemical vapor deposition (MOCVD) has been performed with Hall efect ... -
On the elastic properties of INGAN/GAN LED structures
(Springer, 2019-01)In this study, three InGaN/GaN light-emitting diode (LED) structures with five periods are investigated grown by metal organic chemical vapor deposition (MOCVD) technique. During growth of these three samples, active layer ... -
Investigation of structural, optical and morphological properties of InGaN/GaN structure
(Springer, 2019)In this study, InGaN/GaN structure is investigated in the temperature range of 300–500 °C with steps of 50 °C. InGaN/ GaN multi-quantum well structure is deposited on c-orientated sapphire wafer by metal organic chemical ... -
All ceramic-based metal-free ultra-broadband perfect absorber
(Springer, 2019-06-19)In this paper, we scrutinize unprecedented potential of transition metal carbides (TMCs) and nitrides (TMNs) for realization of light perfect absorption in an ultra-broad frequency range encompassing all of the visible ... -
Ketone body signaling mediates intestinal stem cell homeostasis and adaptation to diet
(Cell Press, 2019)Little is known about how metabolites couple tissue-specific stem cell function with physiology. Here we show that, in the mammalian small intestine, the expression of Hmgcs2 (3-hydroxy-3-methylglutaryl-CoA synthetase 2), ... -
Real-time impedimetric droplet measurement (iDM)
(Royal Society of Chemistry, 2019-10)Droplet-based microfluidic systems require a precise control of droplet physical properties; hence, measuring the morphological properties of droplets is critical to obtain high sensitivity analysis. The ability to perform ...
RSS 1.0