Many of the abstracts link to full page pdf articles and others contain links to other websites that host the material. If you have an interesting application that you would like to share with us, please send your article to ContactUs@stellarnet.us.
2021 Holiday Light Measurement Special- Feeling Blue this Christmas?
Christmas is an exciting time of year. Aside from getting together with family and friends, loosening your belt to enjoy some delicious holiday treats, decorating trees, and exchanging thoughtful gifts, a lot of time is spent celebrating traditions. One popular...
The SpectraWizard Spots a Bright Green Christmas Comet Coming our Way Soon!
If you look up into the early morning sky in the weeks leading up to Christmas, you might just see a bright green spot traversing the sky. Is it Santa doing test runs with his reindeer? Did Rudolph decide to test out a green nose this year? Not exactly. The...
Structural colors of pearls
Ryotaro Ozaki, Kei Kikumoto, Masataka Takagaki, Kazunori Kadowaki & Kazushi Odawara Abstract The luster is the most important characteristic of pearls, whose colors depend on periodic structures of aragonite crystal layers and conchiolin sheets. We here propose an...
Intramolecular Photoinduced Charge Transfer and Recombination Dynamics in Vinylarene Terminated Organosilanes
Brandon J. Barrett, Daniel Jimenez, Rebekka S. Klausen, and Arthur E. Bragg Abstract We report on charge-transfer dynamics of newly designed acceptor–donor–acceptor organosilanes, with a specific focus on how donor–acceptor combination and local chemical environment...
Skin tolerant inactivation of multiresistant pathogens using far-UVC LEDs
Johannes Glaab, Neysha Lobo-Ploch, Hyun Kyong Cho, Thomas Filler, Heiko Gundlach, Martin Guttmann, Sylvia Hagedorn, Silke B. Lohan, Frank Mehnke, Johannes Schleusener, Claudia Sicher, Luca Sulmoni, Tim Wernicke, Lucas Wittenbecher, Ulrike Woggon, Paula Zwicker, Axel...
Sinusoidal analysis reveals a non-linear and dopamine-dependent relationship between ambient illumination and motor activity in larval zebrafish
Alexander H.Burton, Qing Bai, Edward A.Burton Abstract Larval zebrafish show stereotyped motor responses to changes in ambient illumination. The responses can be evaluated in 96-well plates, and are used widely to assess neurological function in zebrafish models....
Predicting the shear value and intramuscular fat in meat from Nellore cattle using Vis-NIR spectroscopy
Marinade Nadai Bonin, Sauloda Luz e Silva, Lutz Bünger, Dave Ross, Gelson Luis Dias Feijó, Rodrigo da Costa Gomes, Francisco Palma Rennó, Miguel Henrique de Almeida Santana, Fernanda Marcondes de Rezende, Luis Carlos Vinhas Ítavo, Francisco José de Novais, Lucy Mery...
November Spectroscopy Spotlight: Thanksgiving and Food Quality Applications
To celebrate the fall harvest and Thanksgiving, the StellarNet team has put together a collection of food quality spectrometer applications. Some of the applications are from our favorite 2021 customer research and others are from our applications division. Please...
Achieving a robust Vis/NIR model for microbial contamination detection of Persian leek by spectral analysis based on genetic, iPLS algorithms and VIP scores
Sahar Rahi, Hossein Mobli, Bahareh Jamshidi, Aslan Azizi, Mohammad Sharifi Abstract Microbial contamination of vegetables is always known as a major food safety challenge. Persian leek is one of the most widely used herbs. Detection of Escherichia coli (E. coli ATCC...
Inactivation of Salmonella and quality changes in wheat flour after pulsed light-emitting diode (LED) treatments
Samir Subedi, Lihui Du, Amritha Prasad, Barun Yadav, and M.S.Roopesh Abstract Several low water activity (aw) foods have been recently associated with Salmonella related outbreaks and recalls. The use of high intensity light pulses generated by light-emitting diodes...
Inactivation of Salmonella on black peppercorns using an integrated ultraviolet-C and cold plasma intervention
In Hee Bang, Jiwon In, Sea C.Min Abstract A nonthermal process that applies ultraviolet (UV)–C and helium cold plasma (CP) simultaneously (UV-CP) has been investigated as an intervention technology to inactivate Salmonella on black peppercorns. The optimum CP...
The Preferences of Different Cultivars of Lettuce Seedlings (Lactuca sativa L.) for the Spectral Composition of Light
Barbara Frąszczak and Monika Kula-Maximenko Abstract The spectrum of light significantly influences the growth of plants cultivated in closed systems. Five lettuce cultivars with different leaf colours were grown under white light (W, 170 μmol m−2 s−1) and under white...
Sunburn control by nets differentially affects the antioxidant properties of fruit peel in ‘Gala’ and ‘Fuji’ apples
Héctor Olivares-Soto, Richard M. Bastías, Arturo Calderón-Orellana & María Dolores López Abstract Netting has been widely used in recent years to protect apple fruit from solar injury. There is little information on the biochemical aspects underlying the...
One-Component Cationic Photoinitiators from Tunable Benzylidene Scaffolds for 3D Printing Applications
Filip Petko, Mariusz Galek, Emilia Hola, Roman Popielarz, and Joanna Ortyl Abstract This paper describes a series of novel benzylidene scaffold-based iodonium salt one-component photoinitiators containing double bonds and dialkylamino groups synthesized in one step...
Evaluation of photoluminescence and scintillation properties of Yb2+-doped SrCl2¹xBrx crystals
Kohei MIZOI1, Miki ARAI, Yutaka FUJIMOTO, Daisuke NAKAUCHI, Masanori KOSHIMIZU, Takayuki YANAGIDA and Keisuke ASAI Abstract Photoluminescence and scintillation properties are reported for SrCl2¹xBrx:Yb2+ (x = 0, 0.3, 1.4, 1.6, and 2.0) crystals grown by a self-seeding...
Examining the Temperature Dependence of Louche Formation in Absinthe
Jessica E. Bickel, Anna Ellis, and Andrew Resnick Abstract Absinthe is an anise-flavored alcohol that is typically served by adding cold water to form a cloudy green louche, similar to the cloudy white louche of ouzo. This microemulsion formation, due to the competing...
Influence of spectrally selective solar cells on microalgae growth in photo-bioreactors
Norbert Osterthun, Mark Helamieh, Dennis Berends, Nils Neugebohrn, Kai Gehrke, Martin Vehse, Martin Kerner, Carsten Agert Abstract Spectrally selective solar cells (SSSC) can be used to combine photovoltaics and photosynthesis. In contrast to agrivoltaic systems where...
Novel paper-based sensing platform using photoluminescent gold nanoclusters for easy, sensitive and selective naked-eye detection of Cu2+
Alexandru-Milentie Hada, Markus Zetes, Monica Focsan, Timea Nagy-Simon, Ana-Maria Craciun Abstract Herein, we developed a novel, cheap, fast and simple portable sensing platform based on the photoluminescence (PL) quenching effect of paper-incorporated bovine serum...
Growth and fatty acid composition of Acutodesmus obliquus under different light spectra and temperatures
Mark Helamieh, Annkathrin Gebhardt, Marco Reich, Friedericke Kuhn, Martin Kerner, Klaus Kümmerer Abstract The combined impact of temperature and light spectra on the fatty acid (FA) composition in microalgae has been sparsely investigated. The aim of this study was to...
Beneficial stilbene-based derivatives: From the synthesis of new catalytic photosensitizer to 3D printouts and fiber-reinforced composites
Wiktoria Tomal, Dominika Krok, Anna Chachaj-Brekiesz, Joanna Ortyla Abstract New meta- and para-cyanoderivatives of 1,4-di(styryl)benzene and 1,3-di(styryl)benzene were synthesized and investigated for their use as photosensitizers of iodonium salt for various...
Introducing the updated StellarRAM Handheld Raman System!
StellarNet introduces the newest version of our handheld Raman spectrometer now available and “in stock” for convenient on-site inspection of unknown materials. Pharmaceuticals, narcotics, hazardous materials, and additive detection for food safety are just some of...
Photoluminescence spectra of point defects in semiconductors: validation of first principles calculations
Yu Jin, Marco Govoni, Gary Wolfowicz, Sean E. Sullivan, F. Joseph Heremans, David D. Awschalom, and Giulia Galli Abstract Optically and magnetically active point defects in semiconductors are interesting platforms for the development of solid-state quantum...
Product Formulation Controls the Impact of Biofouling on Consumer Plastic Photochemical Fate in the Ocean
Taylor F. Nelson, Christopher M. Reddy , and Collin P. Ward Abstract The photodegradation rates of floating marine plastics govern their environmental lifetimes, but the controls on this process remain poorly understood. Photodegradation of these materials has...
Synthesis and Characterization of Bis(phosphine)carbodicarbene Complexes of Iron, Cobalt, and Nickel
Shengwei Zhang and Jeremy P. Krogman Abstract The synthesis and characterization of nickel, cobalt, and iron complexes of the bis(phosphine)carbodicarbene (CDC) ligand 1 is described. The square-planar complexes can be synthesized without the isolation of the...
The SpectraWizard’s Spectroscopy Application Challenge Results 2021
The SpectraWizard’s Spectroscopy Application Challenge has now officially ended! Spectroscopists from all over the world competed against each other for a chance to win over $5,000 in StellarCash. Please check out the winning spectroscopy applications below and don't...
The Polarization of Laser Generation from the Cholesteric Liquid Crystal–Dye-Doped Polymer Layer–Cholesteric Liquid Crystal System
T. M. Sarukhanyan Abstract The state of polarization is an important feature of any laser emission. The polarization of light is important for the processing of laser beams in polarization-dependent devices such as interferometers, optical amplifiers, optical...
Current production by non-methanotrophic bacteria enriched from an anaerobic methane-oxidizing microbial community
S.Berger; D.R.Shaw; T.Berben; H.T.Ouboter; M.H.in ’t Zandt; J.Frank; J.Reimann; M.S.M.Jetten; C.U.Welte Abstract In recent years, the externalization of electrons as part of respiratory metabolic processes has been discovered in many different bacteria and some...
Synthesis, Spectroscopic, and 1O2 Sensitization Characteristics of Extended Pd(II) 10,10-Dimethylbiladiene Complexes Bearing Alkynyl–Aryl Appendages
Anthony T. Rice; Maxwell I. Martin; Molly C. Warndorf; Glenn P. A. Yap; and Joel Rosenthal Abstract Photodynamic therapy (PDT), which involves the photoinduced sensitization of singlet oxygen, is an attractive treatment for certain types of cancer. The development of...
Mechano-Optical Sensors Fabricated with Multilayered Liquid Crystal Elastomers Exhibiting Tunable Deformation Recovery
Kyohei Hisano, Seiya Kimura, Kyosun Ku, Tomoki Shigeyama, Norihisa Akamatsu, Atsushi Shishido, Osamu Tsutsumi Abstract Advances in tuning the mechanoresponsive behavior of liquid crystal elastomers have facilitated the development of next-generation applications such...
Spontaneous alloying of ultrasmall non-stoichiometric Ag–In–S and Cu–In–S quantum dots in aqueous colloidal solutions
Oleksandr Stroyuk; Oleksandra Raievska; Dmytro Solonenko; Christian Kupfer; , Andres Osvet; Miroslaw Batentschuk; Christoph J. Brabec; and Dietrich R. T. Zahn Abstract The effect of spontaneous alloying of non-stoichiometric aqueous Ag–In–S (AIS) and Cu–In–S (CIS)...
New horizons for carbon dots: quantum nano-photoinitiating catalysts for cationic photopolymerization and three-dimensional (3D) printing under visible light
Wiktoria Tomal; Tomasz Świergosz ;, Maciej Pilch ; Wiktor Kasprzyk ; and Joanna Ortyl Abstract Herein, the application of various citric acid-based carbon dots (CDs) as efficient photosensitizers of iodonium salts in initiating the light-induced cationic...
Effect of SILAR Cycles on the Thickness, Structural, Optical Properties of Cobalt Selenide Thin Films
Egwunyenga, N.J.; Onuabuchi, V.C.;, Okoli, N.L.; and Nwankwo, I.E. Abstract Cobalt Selenide thin films were fabricated using Successive Ionic Layer Adsorption and Reaction (SILAR) deposition technique at different SILAR cycles. The precursors for Cobalt and Selenium...
Blue-emitting single band ratiometric luminescent thermometry based on LaF3:Pr3+
Joanna Stefanska; Kamila Maciejewska; Lukasz Marciniak Abstract In accordance with the growing popularity of luminescence thermometry in the single-band-ratiometric approach configuration, we developed the first blue-emitting case based on LaF3:Pr3+. By using...
Synergistic effects of biochar and biostimulants on nutrient and toxic element uptake by pepper in contaminated soils
Rafael Antón-Herrero; Liliana Vega-Jara; Carlos García-Delgado, PhD; Begoña Mayans; Raquel Camacho-Arévalo; Eduardo Moreno-Jiménez, PhD; César Plaza, PhD; and Enrique Eymar, PhD Abstract BACKGROUND: Nowadays a significant amount of land contaminated with toxic...
Spectroscopy of Lightning – Colors and Composition
Congratulations Tampa Bay Lightning on Back to Back Stanley Cups! Have you ever heard that lightning can’t strike twice? Tell that to our very own Tampa Bay Lightning who are now back-to-back Stanley Cup champions! StellarNet manufacturing headquarters has been...
Analyzing Astrophotography Filters- The SpectraWizard captures the Orion Nebula
After analyzing the spectrum of Sirius and Betelgeuse, the SpectraWizard decided to take a shot with astrophotography. His journey takes him to the Great Orion Nebula where he creates a superimposed image of the nebula using bandpass filters. He uses spectroscopy to...
Raman vs NIR Spectroscopy
StellarNet's President, Jason Pierce, explains some of the practical differences of Raman and NIR spectroscopy, which include the inability for NIR to measure aqueous samples, the surface area of detection, portability, specificity, SERS, and fluorescence. A...
Hot Special on Handheld Raman Spectrometers
StellarNet, Inc. is offering a Hot Special of 20% off all handheld Raman Spectrometers starting in June 2021. This offer is only through our US sales office, please contact your local distributor for pricing and discounts available in your region. Don't miss out. Get...
Fluorescent Fish Analysis – Exciting Spectroscopy
Ever have a relaxing weekend with plenty of rest, and when you return to work someone tells you, "you're glowing!"? Not in the literal sense, but if you say that to a glow fish it has a whole new meaning. Glow fish are the first genetically engineered pet that are...
May Flowers Application Special – StellarNet Team visits Local Plant Nursery
It is officially spring and the StellarNet team visited a local plant nursery to do color analysis of freshly bloomed flowers and compare solar spectra from inside and outside of the greenhouse. Green Thumb is a local nursery that has everything you need to get your...