Surface plasmon resonance spectroscopy sensor and methods for using same
- N. Augusta, SC
- Evans, GA
A surface plasmon resonance ("SPR") probe with a detachable sensor head and system and methods for using the same in various applications is described. The SPR probe couples fiber optic cables directly to an SPR substrate that has a generally planar input surface and a generally curved reflecting surface, such as a substrate formed as a hemisphere. Forming the SPR probe in this manner allows the probe to be miniaturized and operate without the need for high precision, expensive and bulky collimating or focusing optics. Additionally, the curved reflecting surface of the substrate can be coated with one or multiple patches of sensing medium to allow the probe to detect for multiple analytes of interest or to provide multiple readings for comparison and higher precision. Specific applications for the probe are disclosed, including extremely high sensitive relative humidity and dewpoint detection for, e.g., moisture-sensitive environment such as volatile chemical reactions. The SPR probe disclosed operates with a large dynamic range and provides extremely high quality spectra despite being robust enough for field deployment and readily manufacturable.
- Research Organization:
- Savannah River Site (SRS), Aiken, SC (United States)
- DOE Contract Number:
- AC09-96SR18500
- Assignee:
- Westinghouse Savannah River Company, L.L.C. (Aiken, SC)
- Patent Number(s):
- US 6466323
- OSTI ID:
- 874810
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
plasmon
resonance
spectroscopy
sensor
methods
spr
probe
detachable
head
applications
described
couples
fiber
optic
cables
directly
substrate
planar
input
curved
reflecting
formed
hemisphere
forming
manner
allows
miniaturized
operate
precision
expensive
bulky
collimating
focusing
optics
additionally
coated
multiple
patches
sensing
medium
allow
detect
analytes
provide
readings
comparison
specific
disclosed
including
extremely
sensitive
humidity
dewpoint
detection
moisture-sensitive
environment
volatile
chemical
reactions
operates
dynamic
range
provides
quality
spectra
despite
robust
field
deployment
readily
manufacturable
fiber optic
reflecting surface
chemical reaction
sensor head
resonance spectroscopy
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