Nanotechnology Research Center (NANOTAM)
Recent Submissions
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Angstrom thick ZnO passivation layer to improve the photoelectrochemical water splitting performance of a TiO 2 nanowire photoanode: The role of deposition temperature
(Nature Publishing Group, 2018)In this paper, we demonstrate that angstrom thick single atomic layer deposited (ALD) ZnO passivation can signifcantly improve the photoelectrochemical (PEC) activity of hydrothermally grown TiO2 NWs. It is found that this ... -
Efect of thermal annealing on mid infrared transmission in semiconductor alloy core glass cladded fibers
(Springer, 2020)We report a study investigating the effects of thermal annealing on the optical properties of Si-Ge alloy-core silica-cladded fibers. Low temperature fiber draw was performed with a laboratory-made draw tower at 1760 °C ... -
Active Nanophotonics
(IEEE, 2020)Being able to manipulate and control light flows at small scales holds the promise to open groundbreaking opportunities for a variety of technologies. Consider, for instance, the challenges currently faced in the world of ... -
Ultra-broadband near-unity light absorption by disjunct scattering resonances of disordered nanounits created with atomic scale shadowing effect
(Springer, 2020)Metamaterial perfect absorbers have been the subject of many studies in recent years. Near-unity light harvesting in an ultra-broadband frequency range is the prime goal in many applications such as photoconversion systems. ... -
An all-dielectric metasurface coupled with two-dimensional semiconductors for thermally tunable ultra-narrowband light absorption
(Springer, 2020)Two-dimensional (2D) transition metal dichalcogenides (TMDCs) have attracted tremendous attention over the past decades. Due to their unique features such as high mobility and direct bandgap, they are suitable candidate ... -
Zebrafish brain RNA sequencing reveals that cell adhesion molecules are critical in brain aging
(Elsevier, 2020)Brain aging is a complex process, which involves multiple pathways including various components from cellular to molecular. This study aimed to investigate the gene expression changes in zebrafish brains through young-adult ... -
Alternative screening method for analyzing the water samples through an electrical microfluidics chip with classical microbiological assay comparison of P. aeruginosa
(Elsevier, 2020)Pseudomonas aeruginosa is a pathogenic bacterium in fresh water supplies that creates a risk for public health. Microbiological analysis of drinking water samples is time consuming and requires qualified personnel. Here ... -
Thickness dependence of solar cell efficiency in transition metal dichalcogenides MX2 (M: Mo, W; X: S, Se, Te)
(Elsevier, 2020)Bulk transition metal dichalcogenides are indirect gap semiconductors with optical gaps in the range of 0.7–1.6 eV, which makes them suitable for solar cell applications. In this work, we study the electronic structure, ... -
Capillary origami as a new method for obtaining folded structures with interior nanoparticle coating
(Elsevier, 2020)We introduce capillary origami as a new method to obtain 3D enclosures with coated nanoparticles on their inner surfaces. When a liquid droplet that contains nanoparticles is placed on the surface of a thin and flexible ... -
Deep subwavelength light confinement in disordered bismuth nanorods as a linearly thermal‐tunable metamaterial
(Wiley-VCH Verlag, 2020)Materials with a tunable optical response that can be controllably tailored using external stimuli excitation have undergone considerable research effort for the development of active optical devices, such as thermo‐optical ... -
Influence of various sol-gel parameters on the physico‐chemical properties of sulfuric acid chelated zirconia aerogels dried at ambient pressure
(Wiley-VCH Verlag, 2020)This work represents the influence of various sol–gel parameters on the physico‐chemical properties of sulfuric acid chelated zirconia aerogels dried at ambient pressure. The sol–gel parameters such as concentrations of ... -
Universality of dissipative self-assembly from quantum dots to human cells
(Nature Research, 2020)An important goal of self-assembly research is to develop a general methodology applicable to almost any material, from the smallest to the largest scales, whereby qualitatively identical results are obtained independently ... -
A highly potent TACC3 inhibitor as a novel anticancer drug candidate
(NLM (Medline), 2020)TACC3, a transforming acidic coiled-coil (TACC) family member, is frequently upregulated in a broad spectrum of cancers, including breast cancer. It plays critical roles in protecting microtubule stability and centrosome ... -
Optical trapping of microparticles and yeast cells at ultra-low intensity by intracavity nonlinear feedback forces
(SPIE, 2020)In standard optical tweezers optical forces arise from the interaction of a tightly focused laser beam with a microscopic particle. The particle is always outside the laser cavity and the incoming beam is not affected by ... -
Dynamic beam splitter employing an all-dielectric metasurface based on an elastic substrate
(OSA - The Optical Society, 2020)Beam splitters are an indispensable part of optical measurements and applications. We propose a dynamic beam splitter incorporating all-dielectric metasurface in an elastic substrate under external mechanical stimulus of ... -
Bismuth plasmonics for extraordinary light absorption in deep sub-wavelength geometries
(OSA - The Optical Society, 2020)In this Letter, we demonstrate an ultra-broadband metamaterial absorber of unrivaled bandwidth (BW) using extraordinary optical response of bismuth (Bi), which is the material selected through our novel analysis. Based on ... -
One-way and near-absolute polarization insensitive near-perfect absorption by using an all-dielectric metasurface
(OSA - The Optical Society, 2020)In this Letter, we numerically propose the one-way perfect absorption of near-infrared radiation in a tunable spectral range with high transmission in the neighboring spectral ranges. This functionality is obtained by using ... -
Unveiling the optical parameters of vanadium dioxide in the phase transition region: a hybrid modeling approach
(Royal Society of Chemistry, 2020)The phase change behavior of vanadium dioxide (VO2) has been widely explored in a variety of optical and photonic applications. Commonly, its optical parameters have been studied in two extreme regimes: hot (metallic) and ... -
Numerical analysis of a thermally tunable spectrally selective absorber enabled by an all-dielectric metamirror
(OSA - The Optical Society, 2020)In this Letter, we numerically propose a temperature-tunable, ultra-narrowband one-way perfect near-infrared radiation absorber with high transmission in the longer wavelength neighboring spectral range. We obtained this ... -
Lithography-free disordered metal–insulator–metal nanoantennas for colorimetric sensing
(OSA - The Optical Society, 2020)The colorimetric detection of bio-agent targets has attracted considerable attention in nanosensor designs. This platform provides an easy to use, real-time, and rapid sensing approach, as the color change can be easily ...
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