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A Brief History of the Sky’s Blueness
How to: Be Uninteresting About Atmospheric Optics When I was asked to do a piece for this month’s Marketing campaign, I decided to ask my kids what they thought I should write about. They hated all my ideas, including explaining why we see the colors in the sky that...
The SpectraWizard’s Summer Spectroscopy BBQ
It’s summer, and like most people at this time of year, the SpectraWizard is excited about summer barbeques. In fact, he’s so excited that he’s hosting one and you are invited! What is on the menu you may ask? How does fresh pork and beef sound? Don’t worry - if you...
The SpectraWizard’s Choice for Newly Released James Webb Telescope Image goes to the “Cosmic Dance”
The SpectraWizard's Choice for Newly Released James Webb Telescope Image goes to the "Cosmic Dance" After considerable review of NASA's recently released James Webb space telescope images, the SpectraWizard has chosen the "Cosmic Dance" image of Stephan's Quintet to...
Spectroscopy of Summer Fruit Salads – Have you eaten the rainbow today?
Have you eaten the rainbow today? The SpectraWizard isn’t the only one who should be enjoying rainbows. One of the best ways to “eat the rainbow” as many nutritionists recommend is to fill your plate with a variety of colorful, flavorful, and nutrient-dense fruits and...
Performance enhancement of fullerene-based solar cells by light processing
Zhe Li, Him Cheng Wong, Zhenggang Huang, Hongliang Zhong, Ching Hong Tan, Wing Chung Tsoi, Ji Seon Kim, James R. Durrant & João T. Cabral Abstract A key challenge to the commercialization of organic bulk heterojunction solar cells is the achievement of...
InGaN/GaN multi-quantum-well solar cells under high solar concentration and elevated temperatures for hybrid solar thermal-photovoltaic power plants
Gilad Moses, Xuanqi Huang, Yuji Zhao,Matthias Auf der Maur, Eugene A. Katz, Jeffrey M. Gordon Abstract Hybrid solar electricity generation combines the high efficiency of photovoltaics (PVs) with the dispatchability of solar thermal power plants. Recent thermodynamic...
Modelling the impact of spectral irradiance and average photon energy on photocurrent of solar modules
Yatindra Kumar, Ramgolam Krishnaraj, Madhavjee SunjivSoyjaudah Abstract Photocurrent generated by a solar cell depends on environmental conditions as well as electrical and technological parameters of the cell. During this research, a holistic assessment of the...
Quantification of Contrast Sensitivity and Color Perception using Head-worn Augmented Reality Displays
Mark A. Livingston; Jane H. Barrow; Ciara M. Sibley Abstract Augmented reality (AR) displays often reduce the visual capabilities of the user. This reduction can be measured both objectively and through user studies. We acquired objective measurements with a color...
Subwavelength Plasmonic Color Tuning of Quantum Dot Emission
Darren C. J. NeoDarren C. J. Neo Institute of Materials Research and Engineering, 2 Fusionopolis Way, Innovis, #08-03, Singapore 138634 More by Darren C. J. Neo, Chengyuan Yang, Yi Shi, Qing Yang Steve Wu, Jie Deng, Yang Xu, Andrew A. Bettiol, Yinthai Chan, and Ee Jin...
StellarNet Celebrates 30 Years of Developing Intelligence from Light!
StellarNet celebrates 30 years of "Developing Intelligence from Light". Since 1992, StellarNet's mini rugged spectrometers have been used all over the world in different spectroscopy applications. From analyzing the Sun's spectral intensity to the development of UV...
Ultraviolet-C (UV-C) for disease and pest management and automating UV-C delivery technology for strawberry
F. Takeda, W. Janisiewicz, B. Short, T. Leskey, A. Stager Abstract Alternative disease and pest management strategies are needed due to increased resistance by strawberry pathogens and arthropod pests to currently used synthetic pesticides and increasing consumer...
Large-Area and Efficient Sky-Blue Perovskite Light-Emitting Diodes via Blade-Coating
Shenglong Chu,Yihan Zhang,Peng Xiao,Wenjing Chen,Rongfeng Tang,Yi Shao,Tao Chen,Xiaoqiang Zhang,Fengguang Liu,Zhengguo Xiao Abstract Large-area fabrication of perovskite light-emitting diodes (PeLEDs) through mass-production techniques has attracted growing attention...
Plasma sanitization of cherry belle radish seeds for Space agricultural applications
Ryan P Gott, K. W Engeling, Christina M Johnson, Haley O Boles, Victoria C Brown, Mary Hummerick, Gioia D Massa and Annie J Meier Abstract As human innovation continuously expands the knowledge base for life beyond Earth, the need for self-sufficient spacecraft is...
Blue Light Spectroscopy from Electronic Visual Displays
N. Correa, E. Spezzia, R. Doti, J. Faubert & J. E. Lugo Abstract This work reports a collection of experiments having the purpose of understanding if a digital induced filtering process could reduce blue light subjection in humans. We used the software f.flux to...
Algal Remediation of Wastewater Produced from Hydrothermally Treated Septage
Kyle McGaughy, Ahmad Abu Hajer, Edward Drabold, David Bayless, and M.Toufiq Reza Abstract Hydrothermal carbonization (HTC) is a promising technology to convert wet wastes like septic tank wastes, or septage, to valuable platform chemical, fuels, and materials....
Blue-green light is required for a maximized fatty acid unsaturation and pigment concentration in the microalga Acutodesmus obliquus
Mark Helamieh, Marco Reich, Sophie Bory, Philipp Rohne, Ulf Riebesell, Martin Kerner, Klaus Kümmerer Abstract Blue-green light is known to maximize the degree of fatty acid (FA) unsaturation in microalgae. However, knowledge on the particular waveband responsible for...
Modeling the impact of spectral irradiance and average photon energy on photocurrent of solar modules
Yatindra Kumar Ramgolam, Krishnaraj Madhavjee Sunjiv Soyjaudah Abstract Photocurrent generated by a solar cell depends on environmental conditions as well as electrical and technological parameters of the cell. During this research, a holistic assessment of the...
Flavonol Profile Is a Reliable Indicator to Assess Canopy Architecture and the Exposure of Red Wine Grapes to Solar Radiation
Johann Martínez-Lüscher, Luca Brillante, and Sahap Kaan Kurtural Abstract Exposure to solar radiation is a determining factor of grape composition. Flavonol synthesis is upregulated by solar radiation leaving a fingerprint on flavonol profile. This study aimed to test...
Accessing In Situ Photocorrosion under Realistic Light Conditions: Photoelectrochemical Scanning Flow Cell Coupled to Online ICP-MS
Ken J. Jenewein, Attila Kormányos, Julius Knöppel, Karl J. J. Mayrhofer, and Serhiy Cherevko Abstract High-impact photoelectrode materials for photoelectrochemical (PEC) water splitting are distinguished by synergistically...
Development of Yb2+-doped SrBrI and BaBrI crystalline scintillators
Kohei Mizoi, Yutaka Fujimoto, Daisuke Nakauchi, Masanori Koshimizu, Takayuki Yanagida, Keisuke Asai Abstract Photoluminescence (PL) and scintillation properties are reported for SrBrI:Yb2+ and BaBrI:Yb2+ crystals grown by a self-seeding solidification method. In both...
Hybrid vanadium dioxide-liquid crystal tunable non-reciprocal scattering metamaterial smart window for visible and infrared radiation control
P. Lakshmi Madhuri, Saranya Bhupathi, S. Shuddhodana, Zaher M. A. Judeh, Sheng-Hsiung Yang, Yi Long, and Ibrahim Abdulhalim Abstract Smart windows based on VO2 can control the infrared radiation entering the building based on the temperature, however, the visible part...
Influence of thickness of poly(3-hexylthiophene-2,5-diyl) hole transport layer on electrical characteristics of lead sulfide quantum dot-based shortwave infrared photodiodes
Kyeong-Ho Seo, Xue Zhang, Sungkeun Baang, Jaehoon Park & Jin-Hyuk Bae Abstract Lead sulfide quantum dots (PbS QDs) have emerged as one of the promising photoactive materials for shortwave infrared (SWIR) photodiodes because of their uncooled processability, cost...
Estimation of nitrogen content in cucumber plant (Cucumis sativus L.) leaves using hyperspectral imaging data with neural network and partial least squares regressions
Sajad Sabzi, Razieh Pourdarbani, Mohammad H. Rohban, Ginés García-Mateos, Juan I. Arribas Abstract In recent years, farmers have often mistakenly resorted to overuse of chemical fertilizers to increase crop yield. However, excessive consumption of fertilizers might...
Potential of far ultraviolet (UV) 222 nm light for management of strawberry fungal pathogens
Wojciech Janisiewicz, Fumiomi Takeda, Breyn Evans, Mary Camp Abstract Recently developed, night-time irradiation provided the breakthrough that made ultraviolet (UV) technology with 254 nm (UV–C) commercially feasible as a sustainable alternative to synthetic...
Generation of nanoplastics during the photoageing of low-density polyethylene
Carmen Sorasan, Carlos Edo, Miguel González-Pleiter, Francisca Fernández-Piñas, Francisco Leganés, Antonio Rodríguez, Roberto Rosal Abstract In this work, we studied the hydrolytic and photochemical degradation of three low-density polyethylene (LDPE) materials,...
Carbon dioxide enrichment promoted the growth, yield, and light-use efficiency of lettuce in a plant factory with artificial lighting
Danyan Chen,Yanhao Mei,Qi Liu,Yongjun Wu,Zhenchao Yang Abstract Lettuce (Latuca sativa L.) is a commercially important crop and a good candidate for production in a plant factory with artificial lighting (PFAL). To explore the influence of CO2 enrichment (eCO2) on...
Defects rich nanostructured black zinc oxide formed by nanosecond pulsed laser irradiation in liquid
Sreed Sharma Kanakkillam, Bindu Krishnan, Selene Sepulveda Guzman, Josue Amilcar Aguilar Martinez, David Avellaneda Avellaneda, Sadasivan Shaji Abstract Zinc oxide (ZnO) is a wide bandgap semiconductor for energy applications while the spectral absorption only in UV...
Detection of necrotrophic DNA marker of anthracnose causing Colletotrichum gloeosporioides fungi in harvested produce using surface plasmon resonance
Aabha Bajaj, Anand M.Shrivastav, Evgeny Eltzov, Noam Alkan, Ibrahim Abdulhalim Abstract Agriculture and food crops monitoring is extremely important for securing the food supply chain to human society. Here, we developed a highly specific detection method for...
ChemWiz Concentration Analysis of Easter Egg Dye
Eggs represent new life, fertility, and rebirth and for these reasons have been absorbed into the springtime Easter celebration. This Easter season, the StellarNet team thinks it is an eggcellent time to introduce the newest addition to the handheld spectrophotometer...
Historical stained glass window laser preservation: The heat accumulation challenge
Evan Maina Maingi, María Pilar Alonso, Luis Alberto Angurel, Md Ashiqur Rahman, Rémy Chapoulie, Stéphan Dubernet, Germán Franciscode la Fuente - Boletín de la Sociedad Española de Cerámica y Vidrio Abstract Stained-glass windows form an important part of cultural...
Valentine’s Day App Note: Spectroscopy, Olfaction, and Fatal Attraction
What are you looking for this Valentine's Day? Good looks with bright colors? Or a sweet irresistible scent? If you answered YES to either you may be more like an INSECT than you think! USDA and University of Florida researchers are studying the effect of scent and...
Sunlight Photolysis of Extracellular and Intracellular Antibiotic Resistance Genes tetA and sul2 in Photosensitizer-Free Water
Fiona B. Dunn and Andrea I. Silverman Abstract Antibiotic resistance genes (ARGs; the genetic material in bacteria that encode for resistance to antibiotics) have been found in the aquatic environment, raising concerns of an environmental transmission route. In an...
Photocatalytic Degradation of Thiacloprid Using Tri-Doped TiO2 Photocatalysts: A Preliminary Comparative Study
Antonietta Mancuso, Wanda Navarra, Olga Sacco, Stefania Pragliola, Vincenzo Vaiano and Vincenzo Venditto Abstract Different tri-doped TiO2 photocatalysts (Fe-N-P/TiO2 , Fe-N-S/TiO2 , Fe-Pr-N/TiO2 , PrN-S/TiO2 , and P-N-S/TiO2 ) were successfully prepared and...
Can the Addition of Odor and Visual Targets Enhance Attraction of the Asian Citrus Psyllid (Hemiptera: Liviidae) to Sticky Traps?
Journal of Economic Entomology - Arjun Khadka, Sandra A Allan, Daniel Cho, Emma N I Weeks Abstract Asian citrus psyllid, Diaphorina citri Kuwayama, negatively impacts the citrus industry as it transmits Candidatus Liberibacter spp., the causal agent of citrus...
Monochromatic light filters to enhance biomass and carotenoid productivities of Dunaliella salina in raceway ponds
Emeka G. Nwoba, Tarannom Rohani, Mohammadjavad Raeisossadati, Ashiwin Vadiveloo, Parisa A.Bahri, Navid R.Moheimani Abstract Monochromatic blue and red wavelengths are more efficient for light to algal biomass conversion than full-spectrum sunlight. In this study,...
3-[3-(4-chlorophenyl)-2-(4-fluorophenyl)-2 H -isoindol-1-yl]-1-phenylpyrrolidine-2,5-dione as a candidate for solar cells applications
Amine El Haimeur, Igor Levkov, Tatyana V. Yegorova, Andrii I. Kysil, Serhiy Shilin, Irina S. Konovalova, Svitlana V. Shishkina, Hicham Bakkali, Eduardo Blanco, Zoia Voitenko Abstract This work is dedicated to the study of structural, morphological, and optical...
Indoor Lighting Releases Gas Phase Nitrogen Oxides from Indoor Painted Surfaces
Heather Schwartz-Narbonne, Stephanie H. Jones, and D. James Donaldson Abstract The indoor environment provides unique surfaces and lighting conditions which affect the photochemistry taking place there. As indoor illumination sources typically output wavelengths too...
2022 New Year’s Resolution: Aim High
It is now 2022 and the StellarNet team wishes you a very happy new year. Like many people, with the turn of the new year, the StellarNet team has been thinking about resolutions. But here at StellarNet instead of "New Year's Resolution" in the typical sense, we have...
Ultra-fast charging in aluminum-ion batteries: electric double layers on active anode
Xuejing Shen, Tao Sun, Lei Yang, Alexey Krasnoslobodtsev, Renat Sabirianov, Michael Sealy, Wai-Ning Mei, Zhanjun Wu & Li TanAbstract With the rapid iteration of portable electronics and electric vehicles, developing high-capacity batteries with ultra-fast charging...
Glucose and Cholesterol Sensing in Blood Plasma Using Zno-Paper Based Microfluidics
Roekmono1 , Harsono Hadi1 , Hilya Nur Imtihani2 , Luthviyah Choirotul Muhimmah1 , Rio Akbar Yuwono3 , Ruri Agung Wahyuono1* Abstract This work aims at investigating the reliability of ZnO-paper based microfluidic analytical devices (ZnO-µPAD) for blood plasma...