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Cd-free quantum dot pellets for efficient white light generation
Y Altintas, MY Talpur, E Mutlugün - Optics Express, 2017 Abstract Semiconductor quantum dots have been on demand for niche optoelectronic applications providing color tenability and possessing high quantum yield and high extinction coefficient. Although the...
Development of a Spectrophotometric Method for Determining pH of Soil Extracts and Comparison with Glass Electrode Measurements
S Bargrizan, RJ Smernik, LM Mosley - Soil Science Society of America Journal, 2017 Abstract Soil pH measurement using conventional glass electrodes has several limitations. A spectrophotometric method was developed for determining soil pH involving indicator dye...
Homeostatic plasticity shapes the visual system’s first synapse
RE Johnson, NW Tien, N Shen, JT Pearson, F Soto… - Nature Communications, 2017 Abstract Vision in dim light depends on synapses between rods and rod bipolar cells (RBCs). Here, we find that these synapses exist in multiple configurations, in which single release sites...
Selective Treatment of Pancreatic Cancer Cells by Plasma-Activated Saline Solutions
Z Chen, L Lin, E Gjika, X Cheng, J Canady, M Keidar - IEEE Transactions on …, 2017 Abstract Atmospheric discharge between a metal pin cathode and saline solution (SS) anode with different air gap lengths was considered for investigating plasma self-organization...
Alexandrite spectroscopic and laser characteristic investigation within a 78–400 K temperature range
M Fibrich, J Šulc, D Vyhlídal, H Jelínková, M Čech - Laser Physics, 2017 Abstract We report on the influence of temperature on the spectroscopic and lasing properties of alexandrite () crystal. The fluorescence lifetime, polarization-resolved absorption and emission...
Synthesis and Electroluminescence Properties of 3-(Trifluoromethyl)phenyl-Substituted 9,10-Diarylanthracene Derivatives for Blue Organic Light-Emitting Diodes
SW Kwak, KM Lee, JE Lee, J Yoo, Y Yi, H Kwon, H Lee… - Applied Sciences, 2017 Abstract Diaryl-substituted anthracene derivatives containing 3-(trifluoromethyl)phenyl) groups, 9,10-diphenyl-2-(3-(trifluoromethyl)phenyl)anthracene (1), 9,10-di([1,10-biphenyl]-4-yl)-2-...
CdS(Se) and PbS(Se) Quantum Dots with High Room Temperature Quantum Efficiency in the Fluorine-Phosphate Glasses
E Kolobkova, N Nikonorov - Quantum-dot Based Light-emitting Diodes, 2017 Abstract In this study, the luminescent properties of the CdS(Se) quantum dots (QDs) with the mean size of 2–4 nm, the (PbS)n/(PbSe)n molecular clusters (MCs) and PbS(Se) quantum dots (QDs) with...
Combination of experimental and in silico methods for the assessment of the phototransformation products of the antipsychotic drug/metabolite Mesoridazine
ML Wilde, J Menz, C Leder, K Kümmerer - Science of The Total Environment, 2017 Abstract The lack of studies on the fate and effects of drug metabolites in the environment is of concern. As their parent compounds, metabolites enter the aquatic environment and are...
Method for Controlling Fungal Plant Pathogens Using a Combination of UV Radiation Followed by Antagonist Application and Dark Period
WJ Janisiewicz, F Takeda - US Patent 20,170,274,106, 2017 Abstract Strawberries are available year-around from production in the field or from controlled environments (e.g. high and low tunnel culture and greenhouse). Diversity of production conditions results in...
Unravelling Additive-based Nanocrystal Pinning for High Efficiency Organic-Inorganic Halide Perovskite Light-Emitting Diodes
MH Park, SH Jeong, HK Seo, C Wolf, YH Kim, H Kim… - Nano Energy, 2017 Abstract Organic-inorganic halide perovskite light emitting diode (PeLED) as a narrow band emitter is an emerging research field. To overcome limited electroluminescence efficiency of PeLEDs,...
Plant growth and development of pepper seedlings under different photoperiods and photon flux ratios of red and blue LEDs
Z Yang, W He, S Mou, X Wang, D Chen, X Hu, L Chen… - Transactions of the Chinese …, 2017 Abstract Pepper seedlings were grown for 30 d with 58±1 μmol/(m2·s) light intensity under different photoperiod (day/night) of 24 h (P24,14 h/10 h), 12 h(P12,7 h/5 h) and 6 h...
Spectral Effects of Supplemental Greenhouse Radiation on Growth and Flowering of Annual Bedding Plants and Vegetable Transplants
BR Poel, ES Runkle - HortScience, 2017 Abstract Supplemental radiation (SR), traditionally provided by high-pressure sodium (HPS) lamps, is recommended for greenhouse production of seedlings during radiation-limiting conditions. Light-emitting diodes (LEDs) have...
Exciton and lattice dynamics in low-temperature processable CsPbBr3 thin-films
C Wolf, TW Lee - Materials Today Energy, 2017 Abstract Lead-halide based perovskite semiconductors have recently attracted significant attention owing to their rapidly increasing efficiency in solar cells and light-emitting devices. Organic–inorganic lead...
Growth and characterization of GaN/AlGaN heterostructures on GaN substrate templates
L Hubbard, N Dietz, M Vernon, R Collazo, S Mita… - … International Conference on …, 2017 This contribution will present the structural and optoelectronic properties of GaN/AlGaN heterostructures grown by Metal Organic Chemical Vapor Deposition (MOCVD) on GaN/sapphire...
Electrochemical, Spectroscopic, and 1O2 Sensitization Characteristics of Synthetically Accessible Linear Tetrapyrrole Complexes of Palladium and Platinum
Andrea M. Potocny, Allen J. Pistner, Glenn P. A. Yap, and Joel Rosenthal Synopsis The synthesis, electrochemistry, and photophysical characterization of a 10,10- dimethyl-5,15-bis(pentafluorophenyl)biladiene (DMBil1) linear tetrapyrrole supporting PdII or PtII centers...
At the crossroad of photochemistry and radiation chemistry: formation of hydroxyl radicals in diluted aqueous solutions exposed to ultraviolet radiation
K Tomanová, M Přeček, V Múčka, L Vysin, L Juha… - … Chemistry Chemical Physics, 2017 Abstract Formation yields of ˙OH radicals were precisely determined in aqueous solutions of coumarin-3-carboxylic acid and ferrous sulfate (i.e., Fricke dosimeter) exposed to 253.7 nm...
En route to a unified model for photo-electrochemical reactor optimisation. I – Photocurrent and H2 yield predictions
FEB Lora, A Hankin, GH Kelsall - Journal of Materials Chemistry A, 2017 A semi-empirical model was developed for the prediction of photocurrent densities and implemented to predict the performance of a photo-electrochemical reactor for water splitting in alkaline...
Application Note – Predicting Ripeness of Avocados with a Near-Infrared Spectrometer System
Introduction The ripeness of an avocado affects its flavor, aroma, color and texture. Ripeness, however, is difficult to determine because the fruit ripens without obvious changes in external appearance. Dry matter content has been established as a surrogate for...
How sulfidation of ZnO powders enhances visible fluorescence
JG Simmons, ME Reish, JV Foreman, J Liu, H Everitt - Journal of Materials Chemistry …, 2017 The mechanism for producing efficient white light phosphors from sulfidated zinc oxide (ZnO) powders is elucidated. ZnO powders prepared by vacuum annealing produce powders of...
Enhanced outcoupling in flexible organic light-emitting diodes on scattering polyimide substrates
KM Lee, R Fardel, L Zhao, CB Arnold, BP Rand - Organic Electronics, 2017 We demonstrate an upscalable approach to increase outcoupling in organic light-emitting diodes (OLEDs) fabricated on flexible substrates. The outcoupling enhancement is enabled by introducing a...
In Situ Photogeneration of Palladium Nanoparticles in Thermoplastic Polyurethane: Photopatterning and Enhanced Oxygen Barrier Property
JD Mangadlao, H Xu, E Baer, RC Advincula - Macromolecular Chemistry and Physics, 2017 A solid phase synthesis of sub 5 nm palladium nanoparticles (Pd NP) by in situ photogeneration in thermoplastic polyurethane (TPU) composite films containing metal precursor and...
Visible light assisted NO 2 sensing at room temperature by CdS nanoflake array
HY Li, JW Yoon, CS Lee, K Lim, JW Yoon, JH Lee - Sensors and Actuators B: …, 2017 A Highly ordered CdS nanoflake array was fabricated by CVD, and its gas sensing characteristics were investigated. The sensor exhibited high response (resistance ratio) of 89% to 5 part...
Polarized Emission from Conjugated Polymer Chains Aligned by Epitaxial Growth during Off-Center Spin-Coating
T Anzai, W Porzio, V Vohraa Due to their macromolecular nature, conjugated polymers can be relatively easily aligned by applying a variety of processes resulting in either elongation or ordering of their conjugated backbones. Processes that induce chain alignment...
Wavelength dependence of the efficiency of photocatalytic processes for water treatment
M Martín-Sómer, B Vega, C Pablos, R van Grieken… - Applied Catalysis B: … 2017 The main objective of this work is to present a novel approach to evaluate quantitatively the action spectra and energy efficiency for chemical oxidation and bacterial inactivation of...
Multimodal Light-Harvesting Soft Hybrid Materials: Assisted Energy Transfer upon Thermally Reversible Gelation
C Felip-León, F Guzzetta, B Julian-Lopez, F Galindo… - The Journal of Physical …, 2017 Multimodal light-harvesting soft systems able to absorb UV-to-NIR radiations and convert into visible emissions have drawn much attention in the last years in order to explore new...
Synthetic Graphene Oxide Leaf for Solar Desalination with Zero Liquid Discharge
C Finnerty, L Zhang, DL Sedlak, KL Nelson, B Mi - Environmental Science & …, 2017 Water vapor generation through sunlight harvesting and heat localization by carbon-based porous thin film materials holds great promise for sustainable, energy-efficient desalination...
Structural and luminescent properties of germanate glasses and double-clad optical fiber co-doped with Yb3+/Ho3+
M Kochanowicz, J Żmojda, P Miluski, T Ragin… - Journal of Alloys and …, 2017 The 2 μm and upconversion emission in low phonon (805 cm−1) germanate glass and double-clad optical fibers co-doped with 0.7Yb2O3/(0.07–0.7)Ho2O3 ions have been investigated. Glasses with the...
Effects of low temperature annealing on the photo-electrochemical performance of tin-doped hematite photo-anodes
FE Bedoya-Lora, A Hankin, I Holmes-Gentle… - Electrochimica Acta, 2017 The effects of post-deposition annealing at 400 and 500 °C on the photo-electrochemical performance of SnIV-doped α-Fe2O3 photo-anodes are reported. Samples were fabricated by spray pyrolysis on...
Sunscreen products impair the early developmental stages of the sea urchin Paracentrotus lividus
SS Thind, CC Mustapic, J Wen, CD Goodwin, A Chen - New Journal of Chemistry, 2017 Marine ecosystems are increasingly threatened by the release of personal care products. Among them, sunscreens are causing concern either for the effects on skin protection from UV...
INVESTIGATING LOW-COST OPTICAL SPECTROSCOPY FOR SENSING PRESSURE ULCERS
Diffuse Reflectance Spectroscopy has been used widely to characterize tissue properties for diagnostic and therapeutic applications. This thesis focuses on the use of spectroscopy for early pressure ulcer detection. The most common early diagnosis technique for...
Technical Note: Sample Damage in Raman Spectroscopy
Raman spectroscopy is utilized in a variety of ways, ranging from the characterization of protein-nucleic acid interactions1 to analyzing dyes in ancient artwork2. When dealing with sensitive samples, a common issue one runs into is damaging the sample. Laser powers...
Analysis of the dehydration process of caffeine using backscattering and transmission Raman spectroscopy
R Takeshima, Y Hattori, S Managaki, M Otsuka - International Journal of …, 2017 Abstract In the present study, the dehydration process of caffeine hydrate (CAH) was investigated by calibrating the moisture content in the caffeine tablet using backscattering Raman...
Accurate Assignments of Excited-State Resonance Raman Spectra: A Benchmark Study Combining Experiment and Theory
MS Barclay, TJ Quincy, DB Williams-Young, M Caricato… - The Journal of Physical …, 2017 Abstract Femtosecond stimulated Raman scattering (FSRS) probes the structural dynamics of molecules in electronically excited states by following the evolution of the vibrational...
Controlling growth and colour of phototrophs by using simple and inexpensive coloured lighting: A preliminary study in the Light4Heritage project towards future strategies for outdoor illumination
P Sanmartín, D Vázquez-Nion, J Arines… - International …, 2017 Abstract The quantity (duration and intensity) and quality (colour or wavelength) of light are key factors involved in regulating growth and physiological processes in photosynthetic organisms. As a...
Developing of DLI(Daily Light Integral) and Spectrum Control Systems for Scientific Cultivation in Agriculture
Y ÖZDEMİR, H Demirel, YE Yıldırım Abstract This study presents a DLI (Daily Light Integral) and Spectrum-Based Scientific Cultivation Control System (DAS) Development, Design and Application of Luminaire. Effective planning and monitoring of the environmental...
Formation of metal nanoparticles in MgF 2, CaF 2 and BaF 2 crystals under the electron beam irradiation and Fibers
ES Bochkareva, AI Sidorov, UV Yurina, OA Podsvirov - Nuclear Instruments and …, 2017 Abstract It is shown experimentally that electron beam action with electrons energies of 50 and 70 keV on MgF2, CaF2 and BaF2 crystals results in local formation in the crystal...
Spectral Properties of Er3+/Tm3+ Co-Doped ZBLAN Glasses and Fibers
X Liao, X Jiang, Q Yang, L Wang, D Chen - Materials, 2017 Abstract A series of Er3+/Tm3+ co-doped fluoride (ZBLAN) glasses and fibers was prepared and their fluorescence spectra was measured under excitation at 793 nm and 980 nm. Correlation between the...
Simulating the fate of indigenous antibiotic resistant bacteria in a mild slope wastewater polluted stream
A Fiorentino, G De Luca, L Rizzo, G Viccione… - Journal of Environmental …, 2017 Abstract The fate of indigenous surface-water and wastewater antibiotic resistant bacteria in a mild slope stream simulated through a hydraulic channel was investigated in outdoor...
Micro-sized tunable liquid crystal optical filters
C Stoltzfus, R Barbour, D Atherton, Z Barber - arXiv preprint arXiv:1705.00983, 2017 Abstract Liquid Crystal Arrayed Microcavities (LCAM) is a new technology for ultra-narrow optical filtering (FWHM ~ 0.1 nm) that uses pico-liter volume Fabry-Perot type optical...
Assessing Cyanobacterial Harmful Algal Blooms as Risk Factors for Amyotrophic Lateral Sclerosis
N Torbick, B Ziniti, E Stommel, E Linder, A Andrew… - Neurotoxicity Research, 2017 Abstract Reoccurring seasonal cyanobacterial harmful algal blooms (CHABs) persist in many waters, and recent work has shown links between CHAB and elevated risk of amyotrophic lateral...