1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
On-chip measurements of Brownian relaxation of magnetic beads with diameters from 10 nm to 250 nm
Rent:
Rent this article for
USD
10.1063/1.4802657
/content/aip/journal/jap/113/15/10.1063/1.4802657
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/15/10.1063/1.4802657

Figures

Image of FIG. 1.
FIG. 1.

Picture of a sensor with definition of dimensions. The bias current I is applied through the arms in the x-direction, while the potential difference Vy is measured across the y-direction.

Image of FIG. 2.
FIG. 2.

In-phase second harmonic signal measured at the indicated values of vs. time t after injection of the bead suspension for (a) Ocean Nanotech beads with nominal diameters of 10 nm, 25 nm, and 40 nm and (b) Micromod beads with nominal diameters of 80 nm, 130 nm, and 250 nm. In the final part of each experiment, the bead suspension is washed out of the channel.

Image of FIG. 3.
FIG. 3.

In-phase (top) and out-of-phase (bottom) corrected second harmonic sensor signals. The solid lines are fits of the Cole-Cole model to the data.

Image of FIG. 4.
FIG. 4.

In-phase (top) and out-of-phase (bottom) corrected second harmonic sensor signal from Fig. 3 normalized to their respective maximum values. The solid lines are fits of the Cole-Cole model to the data.

Tables

Generic image for table
Table I.

Standard deviation of baseline in-phase sensor signal at for the six values of used for the different bead types.

Generic image for table
Table II.

Values of Dh , α, , and obtained from Cole-Cole fits to the frequency sweeps initiated 20 min after injection of the bead suspensions. The numbers in parenthesis after the fitting parameter are 95% uncertainties. The last two columns list the molar concentration c of each bead type in nM and the peak sensor signal normalized with the bead molar concentration . is the theoretical limit of detection calculated by .

Loading

Article metrics loading...

/content/aip/journal/jap/113/15/10.1063/1.4802657
2013-04-19
2014-04-18
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: On-chip measurements of Brownian relaxation of magnetic beads with diameters from 10 nm to 250 nm
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/15/10.1063/1.4802657
10.1063/1.4802657
SEARCH_EXPAND_ITEM