Determination of optimal diameters for nanowires
AssigneeZena Technologies, Inc.
InventorMunib Wober
Life of this patent
Estimating the term…
Abstract
Methods of optimizing the diameters of nanowire photodiode light sensors. The method includes comparing the response of nanowire photodiode pixels having predetermined diameters with standard spectral response curves and determining the difference between the spectral response of the photodiode pixels and the standard spectral response curves. Also included are nanowire photodiode light sensors with optimized nanowire diameters and methods of scene reconstruction.
Claims30
A method of determining a diameter for a nanowire for a nanowire device comprising:
- providing a first nanowire device comprising at least a first pixel and a second pixel, wherein the first pixel comprises a first nanowire comprising a predetermined material and a predetermined diameter, the first pixel configured to detect a first predetermined color and a first complementary color of the first predetermined color, and the second pixel comprises a second nanowire comprising a second predetermined material and a second predetermined diameter, the second pixel configured to detect a second predetermined color and a second complementary color of the second predetermined color;
- determining a first error difference between a first predetermined color spectral response of the first predetermined color of the first nanowire and one or more standard spectral response curves;
- determining a second error difference between a first complimentary color spectral response of the first complementary color of the first nanowire and one or more standard spectral response curves;
- determining a third error difference between a second predetermined color spectral response of the second predetermined color of the second nanowire and the one or more standard spectral response curves;
- and
- determining a fourth error difference between a second complimentary color spectral response of the second complementary color of the second nanowire and the one or more standard spectral response curves;
- and
- determining a total error difference from the first, second, third, and fourth error differences.
A method of scene reconstruction comprising:
- receiving digitized responses of an array of nanowire photodiode devices, the array comprising a alternating plurality of first nanowire photodiode devices and second nanowire photodiode devices, the first nanowire photodiode devices configured to detect a first color and a first complementary color complementary to the first color and the second nanowire photodiode devices configured to detect a second color and a second complementary color complementary to the second color;
- and
- transforming the digitized responses by stepping across a row of alternating first and second nanowire photodiode devices and successively calculating the red, green, and blue scene color from a pair of adjacent first and second nanowire photodiode devices,
- wherein stepping across the row is performed one nanowire photodiode device at a time.
A method of scene reconstruction comprising
- receiving digitized responses of an array of nanowire photodiode devices, the array comprising an alternating plurality of first nanowire photodiode devices and second nanowire photodiode devices, the first nanowire photodiode devices configured to detect a first color and a first complementary color complementary to the first color and the second nanowire photodiode devices configured to detect a second color and a second complementary color complementary to the second color;
- and
- transforming the digitized responses by stepping across a row of alternating first and second nanowire photodiode devices and successively calculating the luminance and chrominance of the scene from a pair of adjacent first and second nanowire photodiode devices,
- wherein stepping across a row is performed a pair of nanodiodes devices at a time.
A device comprising at least a first pixel and a second pixel, wherein the first pixel comprises a first nanowire comprising a predetermined material and a predetermined diameter, the first pixel configured to detect a first predetermined color and a first complementary color of the first predetermined color and the second pixel comprises a second nanowire comprising a second predetermined material and a second predetermined diameter, the second pixel configured to detect a second predetermined color and a second complementary color of the second predetermined color, wherein the first nanowire and the second nanowire have diameters which were determined to produce the least total error difference between spectral responses of the first and second pixels with standard spectral response curves.
A tangible computer readable medium comprising computer executable instructions for:
- simulating a first nanowire device comprising at least a first pixel and a second pixel, wherein the first pixel comprises a first nanowire comprising a predetermined material and a predetermined diameter, the first pixel configured to detect a first predetermined color and a first complementary color of the first predetermined color and the second pixel comprises a second nanowire comprising a second predetermined material and a second predetermined diameter, the second pixel configured to detect a second predetermined color and a second complementary color of the second predetermined color;
- and
- determining a first error difference between a first predetermined color spectral response of the first predetermined color of the first nanowire and one or more standard spectral response curves;
- determining a second error difference between a first complimentary color spectral response of the first complementary color of the first nanowire and one or more standard spectral response curves;
- determining a third error difference between a second predetermined color spectral response of the second predetermined color of the second nanowire and the one or more standard spectral response curves;
- and
- determining a fourth error difference between a second complimentary color spectral response of the second complementary color of the second nanowire and the one or more standard spectral response curves;
- and
- determining a total error difference from the first, second, third, and fourth error differences.
Dependencies are inferred from the claim text.