Browsing Institute of Materials Science and Nanotechnology by Title
Now showing items 1-20 of 1543
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1018 nm Yb-doped high-power fiber laser pumped by broadband pump sources around 915 nm with output power above 100 W
(OSA - The Optical Society, 2017)We demonstrate a 1018 nm ytterbium-doped all-fiber laser pumped by tunable pump sources operating in the broad absorption spectrum around 915 nm. In the experiment, two different pump diodes were tested to pump over a wide ... -
130 nJ 77 fs dissipative soliton fiber laser
(2010)We report on ultrashort high-energy pulse generation from an all-normal-dispersion fiber oscillator. The watt-level laser directly emits chirped pulses with a duration of 1ps and 163nJ of pulse energy. These can be compressed ... -
[2+2] cycloadditions of sorbyl tosylate with imines/1-azadienes: a one-pot domino approach for α-alkylidene-β-lactams and their computational studies and antimicrobial evaluation
(Wiley-Blackwell, 2018)The manuscript describes a straightforward and atom-efficient method for the synthesis of α-alkylidene-β-lactams using sorbyl tosylate and imines/1-azadienes at high temperature (80 °C). The Density functional theory ... -
2D vibrational properties of epitaxial silicene on Ag(111)
(IOP Publishing, 2016-10)The two-dimensional silicon allotrope, silicene, could spur the development of new and original concepts in Si-based nanotechnology. Up to now silicene can only be epitaxially synthesized on a supporting substrate such as ... -
∼3-nm ZnO nanoislands deposition and application in charge trapping memory grown by single ALD step
(Nature Publishing Group, 2016)Low-dimensional semiconductor nanostructures are of great interest in high performance electronic and photonic devices. ZnO is considered to be a multifunctional material due to its unique properties with potential in ... -
4,5-dianilinophtalimide protects neuroendocrine cells against serum deprivation-induced stress and apoptosis
(2013)OBJECTIVE: The aim of this study was to reveal the effects of 4,5-dianilinophthalimide (DAPH), which inhibits amyloid β fibrillization, against serum deprivation (SD)-induced apoptosis and the possible mechanisms in ... -
83 W, 1 ns, 3.1 MHz all-fiber laser for micromachining
(2011)Fiber lasers are commonly used for various material processing applications. The advantages (such as simplicity of the system, high material removal rate) and disadvantages (larger heat-affected zone, reduced precision) ... -
83W, 3.1 MHz, square-shaped, 1 ns-pulsed all-fiber-integrated laser for micromachining
(Optical Society of American (OSA), 2011)We demonstrate an all-fiber-integrated laser based on off-theshelf components producing square-shaped, 1 ns-long pulses at 1.03 μm wavelength with 3.1 MHz repetition rate and 83 W of average power. The master-oscillator ... -
97 percent light absorption in an ultrabroadband frequency range utilizing an ultrathin metal layer: randomly oriented, densely packed dielectric nanowires as an excellent light trapping scaffold
(Royal Society of Chemistry, 2017)In this paper, we propose a facile and large scale compatible design to obtain perfect ultrabroadband light absorption using metal-dielectric core-shell nanowires. The design consists of atomic layer deposited (ALD) Pt ... -
Ab initio study of hydrogenic effective mass impurities in Si nanowires
(Institute of Physics Publishing, 2017-01)The effect of B and P dopants on the band structure of Si nanowires is studied using electronic structure calculations based on density functional theory. At low concentrations a dispersionless band is formed, clearly ... -
Aberrant cerebral network topology and mild cognitive impairment in early Parkinson’s disease
(John Wiley & Sons, Inc., 2015-05-06)The aim of this study was to assess whether mild cognitive impairment (MCI) is associatedwith disruption in large-scale structural networks in newly diagnosed, drug-na€ıve patients with Parkin-son’s disease (PD). Graph ... -
AC-driven, color-and brightness-tunable organic light-emitting diodes constructed from an electron only device
(2013)In this paper, a color- and brightness-tunable organic light-emitting diode (OLED) is reported. This OLED was realized by inserting a charge generation layer into an electron only device to form an n-i-p-i-n structure. It ... -
Accumulation trends of metals and a metalloid in the freshwater crayfish Astacus leptodactylus from Lake Yeniçağa (Turkey)
(2013)This study aims to determine the extent of metal pollution in Lake Yeniçaǧa (Bolu, Turkey) by investigating the accumulation trends of five metals (Al, Cu, Fe, Ni and Zn) and a metalloid (As) in gills, exoskeleton, ... -
Activatable photosensitizers: agents for selective photodynamic therapy
(Wiley-VCH Verlag, 2017)Recent developments in the design of bifunctional and activatable photosensitizers rejuvenate the aging field of photodynamic sensitization and photodynamic therapy. While systematic studies have uncovered new dyes that ... -
Active particles in complex and crowded environments
(American Physical Society, 2016-11)Differently from passive Brownian particles, active particles, also known as self-propelled Brownian particles or microswimmers and nanoswimmers, are capable of taking up energy from their environment and converting it ... -
Actively tunable thin films for visible light by thermo-optic modulation of ZnO
(Wiley-VCH Verlag, 2016)Applications of active control of light matter interactions within integrated photonics, hyper-spectral imaging, reconfigurable lasers, and selective bio-surfaces have enormously increased the demand for realization of ... -
Adsorption of group IV elements on graphene, silicene, germanene and stanene: dumbbell formation
(ACS Publications, 2014-12-09)Silicene and germanene derivatives constructed from periodic dumbbell units play a crucial role in multilayers of these honeycomb structures. Using first-principles calculations based on density functional theory, here ... -
Advances in the LED materials and architectures for energy-saving solid-state lighting toward lighting revolution
(2012)In this paper, we review the recent developments (in years 2010-2011) of energy-saving solid-state lighting. The industry of white light-emitting diodes (LEDs) has made significant progress, and today, white LED market is ... -
Advances in the LED Materials and Architectures fro Energy-Saving Solid State Lighting towards Lighting Revolution
(IEEE, 2012)In this paper, we review the recent developments (in years 2010–2011) of energysaving solid-state lighting. The industry of white light-emitting diodes (LEDs) has made significant progress, and today, white LED market ... -
Advantages of the Blue InGaN/GaN Light-Emitting Diodes with an AlGaN/GaN/AlGaN Quantum Well Structured Electron Blocking Layer
(American Chemical Society, 2014-03-21)InGaN/GaN light-emitting diodes (LEDs) with p-(AlGaN/GaN/AlGaN) quantum well structured electron blocking layer (QWEBL) are designed and grown by a metal− organic chemical-vapor deposition (MOCVD) system. The proposed QWEBL ...
