Structures for controlling light interaction with microfluidic devices
First Claim
Patent Images
1. A fluidic device comprising:
- an article including first and second sides;
first and second adjacent microfluidic channel segments positioned at the first side of the article;
an intervening portion positioned substantially between the first and second microfluidic channel segments; and
a first optical element positioned at the second side of the article and positioned substantially between the first and second channel segments,wherein the first optical element is adapted and arranged such that when a portion of the article is exposed to light at a first intensity, the first optical element redirects at least a portion of the light away from the intervening portion, such that the intervening portion is not exposed to the light or is exposed to the light at a second intensity lower than an intensity of the light at the intervening portion absent the first optical element.
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Abstract
Systems and methods for improved measurement of absorbance/transmission through fluidic systems are described. Specifically, in one set of embodiments, optical elements are fabricated on one side of a transparent fluidic device opposite a series of fluidic channels. The optical elements may guide incident light passing through the device such that most of the light is dispersed away from specific areas of the device, such as intervening portions between the fluidic channels. By decreasing the amount of light incident upon these intervening portions, the amount of noise in the detection signal can be decreased when using certain optical detection systems.
146 Citations
38 Claims
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1. A fluidic device comprising:
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an article including first and second sides; first and second adjacent microfluidic channel segments positioned at the first side of the article; an intervening portion positioned substantially between the first and second microfluidic channel segments; and a first optical element positioned at the second side of the article and positioned substantially between the first and second channel segments, wherein the first optical element is adapted and arranged such that when a portion of the article is exposed to light at a first intensity, the first optical element redirects at least a portion of the light away from the intervening portion, such that the intervening portion is not exposed to the light or is exposed to the light at a second intensity lower than an intensity of the light at the intervening portion absent the first optical element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification