• No results found

Theoretical and experimental investigations in MEMS based force detected NMR

N/A
N/A
Protected

Academic year: 2020

Share "Theoretical and experimental investigations in MEMS based force detected NMR"

Copied!
116
0
0

Loading.... (view fulltext now)

Full text

Loading

Figure

Figure 1.1: Bloch equation simulation showing magnetization trajectories on a Bloch sphere.These simulations include the e�ects of relaxation.(a) �1 = 10�2 with an o�set �eld of10 Hz, no rf �eld, and with magnetization initially along the �-axis
Figure 1.5: Flexible-sphere model of an idealized mechanical detector.The sample isimmersed in a hollowed sphere of �exible magnetic material magnetized along the axis of thevertical arrows.Cyclically inverting the sample magnetization at a mechanical resonancefrequency of the detector causes elliptical distortions proportional to the magnetization.The �eld throughout the sample remains homogeneous during the distortions.
Figure 1.6: Cross-section of a force-detected NMR spectrometer.The dimensions of thegradients are eliminated by maintaining remagnet are chosen to maximize the �eld homogeneity at the sample and odd-order �eld�ection symmetry.The detector magnet isbound to the center of the silicon beam.
Figure 1.7: The force �eld between a sample moment �� and an axial detector moment ��.The dotted lines indicate nodal surfaces of revolution at angles of 90� and � = arccosp3�5 �39�2� upon which the z-component of the force vanishes
+7

References

Related documents

If one has a control group and a group treated with methyl prednisolone, and they are killed at the same time (in this instance on the 21st day) one finds that the tumors

Phytochemical analysis showed the presence of phenols, flavonoids, alkaloids, terpenoids, steroids, tannins, saponins, and sugars in different extracts of the aerial parts of

An affirming new treatment for breast cancer being developed at Virginia Commonwealth University Massey Cancer Center and the VCU Institute of Molecular Medicine has

Standardization of herbal raw drugs include passport data of raw plant drugs, botanical authentification, microscopic & molecular examination, identification of

The degree of resistance exhibited after 1, 10 and 20 subcultures in broth in the absence of strepto- mycin was tested by comparing the number of colonies which grew from the

F2 locus equations are phonetic descriptors of place of articulation [3]-[4], expressed through the linear relationship between the F2 midvowel (or vowel target)

Although the PAN fibers showed better distribution in cement paste than PP, increase in the fiber volume content more than %1 caused its bundling, and reduced the effectiveness

This essay asserts that to effectively degrade and ultimately destroy the Islamic State of Iraq and Syria (ISIS), and to topple the Bashar al-Assad’s regime, the international