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Nanosensors
book

Nanosensors

by Vinod Kumar Khanna
April 2016
Intermediate to advanced content levelIntermediate to advanced
666 pages
22h 57m
English
CRC Press
Content preview from Nanosensors
415Magnetic Nanosensors
(a glucose polymer) coating of approximately 10 nm thickness is about
25–30 nm (Perez et al. 2004). This is equivalent to a 750–1200 kDa globular
protein (protein that consists of long chains of amino acids folded up into
complex shapes). 1 kDa = the weight of 1000 hydrogen atoms = 1.66 × 10
−21
g.
Are these nanoparticles superparamagnetic? Yes.
What is superparamagnetism? Superparamagnetism occurs when a mate-
rial is composed of very small crystallites (1–10 nm) (Gossuin et al. 2009).
In this case, even though the temperature is below the Curie or Neel tem-
perature (the temperature above which a ferromagnetic substance loses
its ferromagnetism and becomes paramagnetic) and the thermal energy
is not sufcient ...
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Publisher Resources

ISBN: 9781439827130