emission spectroscopy
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Synlett ◽  
2022 ◽  
Author(s):  
Eva Bednářová ◽  
Logan R. Beck ◽  
Tomislav Rovis ◽  
Samantha L. Goldschmid ◽  
Katherine Xie ◽  
...  

AbstractThe use of low-energy deep-red (DR) and near-infrared (NIR) light to excite chromophores enables catalysis to ensue across barriers such as materials and tissues. Herein, we report the detailed photophysical characterization of a library of OsII polypyridyl photosensitizers that absorb low-energy light. By tuning ligand scaffold and electron density, we access a range of synthetically useful excited state energies and redox potentials.1 Introduction1.1 Scope1.2 Measuring Ground-State Redox Potentials1.3 Measuring Photophysical Properties1.4 Synthesis of Osmium Complexes2 Properties of Osmium Complexes2.1 Redox Potentials of Os(L)2-Type Complexes2.2 Redox Potentials of Os(L)3-Type Complexes2.3 UV/Vis Absorption and Emission Spectroscopy3 Conclusions


Electronics ◽  
2022 ◽  
Vol 11 (2) ◽  
pp. 253
Author(s):  
Hyukjoon Kwon ◽  
Sang Jeen Hong

To minimize wafer yield losses by misprocessing during semiconductor manufacturing, faster and more accurate fault detection during the plasma process are desired to increase production yields. Process faults can be caused by abnormal equipment conditions, and the performance drifts of the parts or components of complicated semiconductor fabrication equipment are some of the most unnoticed factors that eventually change the plasma conditions. In this work, we propose improved stability and accuracy of process fault detection using optical emission spectroscopy (OES) data. Under a controlled experimental setup of arbitrarily induced fault scenarios, the extended isolation forest (EIF) approach was used to detect anomalies in OES data compared with the conventional isolation forest method in terms of accuracy and speed. We also used the OES data to generate features related to electron temperature and found that using the electron temperature features together with equipment status variable identification data (SVID) and OES data improved the prediction accuracy of process/equipment fault detection by a maximum of 0.84%.


2022 ◽  
Vol 105 (3) ◽  
Author(s):  
Hitoshi Sato ◽  
Takuma Matsumoto ◽  
Naomi Kawamura ◽  
Kazuhiro Maeda ◽  
Toshiro Takabatake ◽  
...  

Chemosensors ◽  
2022 ◽  
Vol 10 (1) ◽  
pp. 19
Author(s):  
Abigail E. Reese ◽  
Charles Lochenie ◽  
Ailsa Geddis ◽  
Luana A. Machado ◽  
Marcos C. de Souza ◽  
...  

Five new disubstituted 2,6-thioaryl-BODIPY dyes were synthesized via selective aromatic electrophilic substitution from commercially available thiophenols. The analysis of the photophysical properties via absorption and emission spectroscopy showed unusually large Stokes shifts for BODIPY fluorophores (70–100 nm), which makes them suitable probes for bioimaging. Selected compounds were evaluated for labelling primary immune cells as well as different cancer cell lines using confocal fluorescence microscopy.


2022 ◽  
Author(s):  
Killian E. Samuels ◽  
Aleksander Clark ◽  
Walker McCord ◽  
Seth Holladay ◽  
Zhili Zhang ◽  
...  

2022 ◽  
Author(s):  
Byrenn Birch ◽  
Fabian Zander ◽  
David R. Buttsworth ◽  
Lachlan Noller ◽  
Allan Payne

Life ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 12
Author(s):  
Matthew Kelbrick ◽  
James A. W. Oliver ◽  
Nisha K. Ramkissoon ◽  
Amy Dugdale ◽  
Ben P. Stephens ◽  
...  

The waters that were present on early Mars may have been habitable. Characterising environments analogous to these waters and investigating the viability of their microbes under simulated martian chemical conditions is key to developing hypotheses on this habitability and potential biosignature formation. In this study, we examined the viability of microbes from the Anderton Brine Springs (United Kingdom) under simulated martian chemistries designed to simulate the chemical conditions of water that may have existed during the Hesperian. Associated changes in the fluid chemistries were also tested using inductively coupled plasma-optical emission spectroscopy (ICP-OES). The tested Hesperian fluid chemistries were shown to be habitable, supporting the growth of all of the Anderton Brine Spring isolates. However, inter and intra-generic variation was observed both in the ability of the isolates to tolerate more concentrated fluids and in their impact on the fluid chemistry. Therefore, whilst this study shows microbes from fluctuating brines can survive and grow in simulated martian water chemistry, further investigations are required to further define the potential habitability under past martian conditions.


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