Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantitative measurement of the magnetic moment of an individual
  magnetic nanoparticle by magnetic force microscopy   We demonstrate the quantitative measurement of the magnetization of
individual magnetic nanoparticles (MNP) using a magnetic force microscope
(MFM). The quantitative measurement is realized by calibration of the MFM
signal using an MNP reference sample with traceably determined magnetization. A
resolution of the magnetic moment of the order of 10^(-18) Am^2 under ambient
conditions is demonstrated which is presently limited by the tip's magnetic
moment and the noise level of the instrument. The calibration scheme can be
applied to practically any MFM and tip thus allowing a wide range of future
applications e.g. in nanomagnetism and biotechnology.

34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg