Abstract
We report on the construction of a Fourier plane imaging system attached to a cell phone. By illuminating particle suspensions with a collimated beam from an inexpensive diode laser, angularly resolved scattering patterns are imaged by the phone's camera. Analyzing these patterns with Mie theory results in predictions of size distributions of the particles in suspension. Despite using consumer grade electronics, we extracted size distributions of sphere suspensions with better than 20 nm accuracy in determining the mean size. We also show results from milk, yeast, and blood cells. Performing these measurements on a portable device presents opportunities for field-testing of food quality, process monitoring, and medical diagnosis.
| Original language | English (US) |
|---|---|
| Article number | e46030 |
| Journal | PLoS One |
| Volume | 7 |
| Issue number | 10 |
| DOIs | |
| State | Published - Oct 2 2012 |
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ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Biochemistry, Genetics and Molecular Biology(all)
- Medicine(all)
Cite this
Nanometer-Scale Sizing Accuracy of Particle Suspensions on an Unmodified Cell Phone Using Elastic Light Scattering. / Smith, Zachary J.; Chu, Kaiqin; Wachsmann-Hogiu, Sebastian.
In: PLoS One, Vol. 7, No. 10, e46030, 02.10.2012.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Nanometer-Scale Sizing Accuracy of Particle Suspensions on an Unmodified Cell Phone Using Elastic Light Scattering
AU - Smith, Zachary J.
AU - Chu, Kaiqin
AU - Wachsmann-Hogiu, Sebastian
PY - 2012/10/2
Y1 - 2012/10/2
N2 - We report on the construction of a Fourier plane imaging system attached to a cell phone. By illuminating particle suspensions with a collimated beam from an inexpensive diode laser, angularly resolved scattering patterns are imaged by the phone's camera. Analyzing these patterns with Mie theory results in predictions of size distributions of the particles in suspension. Despite using consumer grade electronics, we extracted size distributions of sphere suspensions with better than 20 nm accuracy in determining the mean size. We also show results from milk, yeast, and blood cells. Performing these measurements on a portable device presents opportunities for field-testing of food quality, process monitoring, and medical diagnosis.
AB - We report on the construction of a Fourier plane imaging system attached to a cell phone. By illuminating particle suspensions with a collimated beam from an inexpensive diode laser, angularly resolved scattering patterns are imaged by the phone's camera. Analyzing these patterns with Mie theory results in predictions of size distributions of the particles in suspension. Despite using consumer grade electronics, we extracted size distributions of sphere suspensions with better than 20 nm accuracy in determining the mean size. We also show results from milk, yeast, and blood cells. Performing these measurements on a portable device presents opportunities for field-testing of food quality, process monitoring, and medical diagnosis.
UR - http://www.scopus.com/inward/record.url?scp=84867018922&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84867018922&partnerID=8YFLogxK
U2 - 10.1371/journal.pone.0046030
DO - 10.1371/journal.pone.0046030
M3 - Article
C2 - 23056228
AN - SCOPUS:84867018922
VL - 7
JO - PLoS One
JF - PLoS One
SN - 1932-6203
IS - 10
M1 - e46030
ER -