Results 121 to 130 of about 5,903,088 (292)

Contact and Non-Contact Measurements of Chlorophyll-a in Water Based on Laser Spectroscopy

Journal of Marine Science and Engineering
Chlorophyll-a fluorescence detection is an important technique for monitoring water quality. In this paper, we proposed an approach that employs the ratio of fluorescence to Raman obtained from contact and non-contact laser-induced fluorescence detection
Xiuyue Dong, Xiaohua Che, Zhaoshuo Tian
doaj   +1 more source

S‐Nitrosothiols as Thiol‐Protecting Groups for Controlled Thiol‐Maleimide Crosslinking of Homogeneous Soft Hydrogels

Advanced Materials, EarlyView.
Rapid thiol‐maleimide addition frequently outpaces mixing, resulting in heterogeneous hydrogels. S‐nitrosothiols act as thiol‐protecting groups, allowing uniform mixing with maleimide‐functionalized polymers before gelation. Sodium thiosulfate or sodium ascorbate then regenerates thiols on demand, triggering controlled thiol‐maleimide crosslinking ...
Julian A. Serna, Michelle J. Iwohn, Maximilian Seifermann, Stefan Heißler, Maike Schliephake, Franziska Dopp, Claudia Muhle‐Goll, Pavel A. Levkin   +7 more
wiley   +1 more source

Optical diagnostics of metals in high temperature environments. [PDF]

, 2012
The thesis presents results for the detection of metal species in high temperature environments using optical techniques. Three optical techniques, namely laser Polarisation Spectroscopy (PS), Atomic Emission Spectroscopy (AES) and Laser-Induced ...
Hsu, Li-Jen
core  

A New Concept for an Integrated Mapping of Rare‐Earth Elements using Laser–Induced Fluorescence and Reflectance Spectroscopy

Advanced Sensor Research
Rare earth elements are increasingly seen as critical raw materials and are currently the subject of geopolitical interests. To boost mineral exploration and extraction, it is important to ensure the rapid identification and mapping of rare earth ...
Titus Abend, Margret Fuchs, Jan Beyer, Sandra Lorenz, Nadine Schüler, Kay Dornich, Johannes Heitmann, Richard Gloaguen   +7 more
doaj   +1 more source

Conformal Thermoreversible Gelatin‐Based Gel for High‐Fidelity Electrophysiological Recording and Acute Peripheral Nerve Interfacing

Advanced Materials, EarlyView.
A thermoreversible gelatin‐based gel forms a soft, conformal bioelectronic interface on complex biological surfaces. The flowable precursor penetrates hair‐dense regions, solidifies in situ, and maintains low impedance through adaptive contact and hydration retention.
Ruinan Hao, Yong Yuan, Jie Gao, Tong Wang, Jinzhi Du, Feng Tian, Xiaoli Li, Ruirui Qiao, Liqun Zhang, Jiajia Xue   +9 more
wiley   +1 more source

Investigation of Laser-Induced Breakdown Spectroscopy combined with Laser-Induced Fluorescence

, 2008
International Conference on Application of Photonic Technology (Photonics North 2008), Montreal, Quebec, Canada, June 2-4, 2008, 2008-06-02, Montreal, Quebec ...
Laville, Stéphane, Gouegel, Christian, Loudyi, Hakim, Chaker, Mohamed, Sabsabi, Mohamad, Vidal, Francois   +5 more
openaire   +1 more source

Ion Concentration and Voltage Imaging With Fluorescent Nanodiamonds

Advanced Materials, EarlyView.
We demonstrate reversible switching between the fluorescent NV0 and the dark NV+ state, in sub‐30 nm FNDs via surface oxidation and hydrogenation, respectively. In an electrochemical cell, we show that the fluorescence from hydrogenated particles enables all‐optical imaging of voltages and ion concentrations at the micrometer scale.
Patrick Voorhoeve, Alessandro Mameli, Hiroshi Abe, Takeshi Ohshima, Qiang Sun, Anita Quigley, Rob Kapsa, Nikolai Dontschuk, Philipp Reineck   +8 more
wiley   +1 more source

All‐Amyloid Functional Coacervates

Advanced Materials, EarlyView.
This study introduces an all‐amyloid interfacial complex coacervate technique that employs charge‐mediated or functionalization‐assisted complexation of oppositely charged food protein‐derived amyloid nanofibrils to engineer functional soft constructs across multiple length scales.
Seyyed Alireza Hashemi, Mohammad Peydayesh, Laura Baraldi, Mohammad Arjmand, Raffaele Mezzenga   +4 more
wiley   +1 more source

Modern Fluorescence Strategies for Honey Characterization: Analytical Advances, Emerging Technologies, Methodological Challenges, and Future Perspectives

Foods
Honey authenticity control remains analytically challenging due to the complexity of its matrix and the increasing sophistication of adulteration practices.
Krastena Nikolova, Daniela Batovska, Galia Gentscheva, Tinko Eftimov, Yulian Tumbarski   +4 more
doaj   +1 more source

Fast 2D Laser-Induced Fluorescence Spectroscopy Mapping of Rare Earth Elements in Rock Samples. [PDF]

Sensors (Basel), 2019
Seidel P, Lorenz S, Heinig T, Zimmermann R, Booysen R, Beyer J, Heitmann J, Gloaguen R.   +7 more
europepmc   +1 more source