Results 31 to 40 of about 2,700,521 (330)

Electrode chemistry yields a nanoparticle-based NMR sensor for calcium. [PDF]

open access: yesLangmuir, 2008
Magnetic nanoparticles (NPs) have been used to obtain NMR-based sensors for analytes ranging from small molecules to viruses by the conjugation of biomolecules (antibodies, proteins, oligonucleotides) to the surface of NPs. In the presence of an analyte, the NPs form clusters that alter the relaxation time of the surrounding water protons.
Sonia Taktak   +2 more
semanticscholar   +4 more sources

Nonvolatile nuclear spin memory enables sensor-unlimited nanoscale spectroscopy of small spin clusters

open access: yesNature Communications, 2017
Dissipation of the sensor is a limiting factor in metrology. Here, Pfender et al. suppress this effect employing the nuclear spin of an NV centre for robust intermediate storage of classical NMR information, allowing then to record single-spin NMR ...
Matthias Pfender   +7 more
doaj   +1 more source

A self optimizing synthetic organic reactor system using real-time in-line NMR spectroscopy [PDF]

open access: yes, 2015
A configurable platform for synthetic chemistry incorporating an in-line benchtop NMR that is capable of monitoring and controlling organic reactions in real-time is presented.
Cronin, Leroy   +3 more
core   +2 more sources

Mini Inside-Out Nuclear Magnetic Resonance Sensor Design for Soil Moisture Measurements

open access: yesSensors, 2019
The improvement of water management in agriculture by exactly detecting moisture parameters of soil is crucial. To investigate this problem, a mini inside-out nuclear magnetic resonance sensor (NMR) was proposed to measure moisture parameters of model ...
Jiamin Wu   +5 more
doaj   +1 more source

Embroidered Coils for Magnetic Resonance Sensors [PDF]

open access: yes, 2013
Magnetic resonance imaging is a widely used technique for medical and materials imaging. Even though the objects being imaged are often irregularly shaped, suitable coils permitting the measurement of the radio-frequency signal in these systems are ...
Blumich   +11 more
core   +2 more sources

Rational design of a genetically encoded NMR zinc sensor

open access: yesChemical Science, 2023
Elucidating the biochemical roles of the essential metal ion, Zn2+, motivates detection strategies that are sensitive, selective, quantitative, and minimally invasive in living systems.
Zhuangyu Zhao   +4 more
openaire   +2 more sources

Exploring on the Sensitivity Changes of the LC Resonance Magnetic Sensors Affected by Superposed Ringing Signals

open access: yesSensors, 2018
LC resonance magnetic sensors are widely used in low-field nuclear magnetic resonance (LF-NMR) and surface nuclear magnetic resonance (SNMR) due to their high sensitivity, low cost and simple design.
Tingting Lin   +5 more
doaj   +1 more source

1H LF-NMR Self-Diffusion Measurements for Rapid Monitoring of an Edible Oil’s Food Quality with Respect to Its Oxidation Status

open access: yesMolecules, 2022
The food quality of edible oils is dependent on basic chemical and structural changes that can occur by oxidation during preparation and storage. A rapid and efficient analytical method of the different steps of oil oxidation is described using a time ...
Tatiana Osheter   +4 more
doaj   +1 more source

Thermometers for low temperature Magic Angle Spinning NMR [PDF]

open access: yes, 2010
The measurement of temperature in a Magic Angle Spinning NMR probe in the temperature range 85-300 K is discussed. It is shown that the shift of the Sn-119 resonance of Sm2Sn2O7 makes a good thermometer with shift being given by delta = 223 - 9.54 x 10(4)
T.F. Kemp   +13 more
core   +1 more source

Fluorescent Property of Chitosan Oligomer and Its Application as a Metal Ion Sensor

open access: yesMarine Drugs, 2017
An aqueous solution was successfully prepared using a low-molecular-weight chitosan oligomer and FITC, and its structural and fluorescent properties were observed by using 1H NMR, 13C NMR, FT-IR, XRD, UV-Vis, and PL spectrometry.
Hun Min Lee   +3 more
doaj   +1 more source

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