Evanescent-field optical microscopy: effects of polarization, tip
... The presence of a dielectric tip within the evanescent field causes frustrated total reflection (FTR) [15], and part of the light is transmitted into the tip (fig. 1). For an angle of incidence close to the critical angle for T I R the optical transmission is larger f o r p-polarization than for s-p ...
... The presence of a dielectric tip within the evanescent field causes frustrated total reflection (FTR) [15], and part of the light is transmitted into the tip (fig. 1). For an angle of incidence close to the critical angle for T I R the optical transmission is larger f o r p-polarization than for s-p ...
Laser Tweezers
... noticed that some of the particles in his sample began to "stick" to the laser beam and follow it around as the laser tracked across the field of view. After further investigation, it was clear that for some reason the laser beam was in fact acting like a pair of microscopic tweezers, squeezing part ...
... noticed that some of the particles in his sample began to "stick" to the laser beam and follow it around as the laser tracked across the field of view. After further investigation, it was clear that for some reason the laser beam was in fact acting like a pair of microscopic tweezers, squeezing part ...
Chapter 3 Geometric Optics
... where ni and nr are the indices of refraction in the respective media. Note that all angles are measured relative to the normal to the surfaces. In the geometric optics picture, a ray of light travels through a uniform medium in a straight line until a new interface is reached. The ray is deflected ...
... where ni and nr are the indices of refraction in the respective media. Note that all angles are measured relative to the normal to the surfaces. In the geometric optics picture, a ray of light travels through a uniform medium in a straight line until a new interface is reached. The ray is deflected ...
Quasi-3D plasmonic coupling scheme for near-field optical lithography and imaging Y W
... the sample being scanned because their resonance is usually detuned by the change of sample properties at their close proximity. Another widely used approach is to use nanoscale objects, such as nanoparticles or surface apexes, to localize and produce an intense electromagnetic hotspot for lithograp ...
... the sample being scanned because their resonance is usually detuned by the change of sample properties at their close proximity. Another widely used approach is to use nanoscale objects, such as nanoparticles or surface apexes, to localize and produce an intense electromagnetic hotspot for lithograp ...
289-1028-1
... Polymer has received great attention due to its environmental stability, ease of preparation ,and its optical and electrical properties . Much work has been done on the molecular design ,synthesis ,and assembly of structures with desired properties[1].Phenols resin are polymers used in a wide varie ...
... Polymer has received great attention due to its environmental stability, ease of preparation ,and its optical and electrical properties . Much work has been done on the molecular design ,synthesis ,and assembly of structures with desired properties[1].Phenols resin are polymers used in a wide varie ...
IJFTR 12(2) 100-102
... (2) Some discrepancies may arise owing to the incomplete circularity of some fibres and to the drawing and spinning processes. (3) Light polarized parallel to the axis of the fibre must be used for these measurements, because calculation of the combined fresnel coefficients shows that light polarize ...
... (2) Some discrepancies may arise owing to the incomplete circularity of some fibres and to the drawing and spinning processes. (3) Light polarized parallel to the axis of the fibre must be used for these measurements, because calculation of the combined fresnel coefficients shows that light polarize ...
Measurements at the Speed of Ultrasound
... the pipe. If the pipe geometry is uniform, then reflections occur only when a defect or other discontinuity is encountered. The angle-beam wedge is used routinely nowadays to inspect welds and to find cracks or disbonds. Depending on the wedge angle, one can launch shear or Rayleigh (surface) or La ...
... the pipe. If the pipe geometry is uniform, then reflections occur only when a defect or other discontinuity is encountered. The angle-beam wedge is used routinely nowadays to inspect welds and to find cracks or disbonds. Depending on the wedge angle, one can launch shear or Rayleigh (surface) or La ...
Optical Sources and Detectors
... Electromagnetic radiation may vary in wavelength (or frequency) and in "strength." Variations in strength are described in more precise physical terms, which have developed in the areas called radiometry and photometry. Radiometry is the science of measurement of electromagnetic radiation. In the di ...
... Electromagnetic radiation may vary in wavelength (or frequency) and in "strength." Variations in strength are described in more precise physical terms, which have developed in the areas called radiometry and photometry. Radiometry is the science of measurement of electromagnetic radiation. In the di ...
class7-colordisplayR
... Hexcone: When the plane of projection is moved from the white to black along the gray line, successively smaller colour subcubes are intercepted and a series of hexagons of decreasing size are produced. The hexagon at white is the largest and the hexagon at black is reduced to a point. This series o ...
... Hexcone: When the plane of projection is moved from the white to black along the gray line, successively smaller colour subcubes are intercepted and a series of hexagons of decreasing size are produced. The hexagon at white is the largest and the hexagon at black is reduced to a point. This series o ...
Chapter 8 Wave Optics
... The results are involved in interferences and diffractions. It is known that for the interference of the double-slit, the fringes are equally bright. But when we consider the diffraction by a slit, the final pattern actually observed is a combination of both effects. The interference pattern locates ...
... The results are involved in interferences and diffractions. It is known that for the interference of the double-slit, the fringes are equally bright. But when we consider the diffraction by a slit, the final pattern actually observed is a combination of both effects. The interference pattern locates ...
3D AND MULTISPECTRAL IMAGING FOR SUBCUTANEOUS
... Multispectral imaging is commonly used to obtain reflectance measurements of an object in several spectral bands. As a result, each pixel of the image is expected to have specific intensity values over the light spectrum, corresponding to the so called spectral signature. In our experiment, the skin ...
... Multispectral imaging is commonly used to obtain reflectance measurements of an object in several spectral bands. As a result, each pixel of the image is expected to have specific intensity values over the light spectrum, corresponding to the so called spectral signature. In our experiment, the skin ...
Regenerating evanescent waves from a silver superlens
... ensures a concentricity of better than 300 µm. The coupling mechanism is shown in Fig. 2(b). Instead of placing a near-field object for the case of real superlens imaging, we now utilize the subwavelength surface roughness at the silver–air interface to scatter the incident beam to all possible kx d ...
... ensures a concentricity of better than 300 µm. The coupling mechanism is shown in Fig. 2(b). Instead of placing a near-field object for the case of real superlens imaging, we now utilize the subwavelength surface roughness at the silver–air interface to scatter the incident beam to all possible kx d ...
Lithography In the Top
... – ArF – 193 nM – Shorter wavelength than so-called “deep UV” peak of 248nM – F2 Laser – Low output but at 157nM ...
... – ArF – 193 nM – Shorter wavelength than so-called “deep UV” peak of 248nM – F2 Laser – Low output but at 157nM ...
OCR Document - mackenziekim
... diagram image characteristics and the thin lens equation results. Summarize image characteristics for a double convex lens. How does a concave mirror compare with a convex lens with respect to the images they produce? Do you think the mirror equation be useful for lenses? Use an example to provide e ...
... diagram image characteristics and the thin lens equation results. Summarize image characteristics for a double convex lens. How does a concave mirror compare with a convex lens with respect to the images they produce? Do you think the mirror equation be useful for lenses? Use an example to provide e ...
Images and Plane Mirrors
... Example 4: Determine the image distance and image height for a 5.00-cm tall object placed 30.0 cm from a concave mirror having a focal length of 15.0 cm. Answer: Si = 30.0 cm and hi = -5.0 cm Use 1 / f = 1 / So + 1 / Si where f =15 cm and So = 45 cm Then use hi / ho = - Si / So where ho = 5 cm, So ...
... Example 4: Determine the image distance and image height for a 5.00-cm tall object placed 30.0 cm from a concave mirror having a focal length of 15.0 cm. Answer: Si = 30.0 cm and hi = -5.0 cm Use 1 / f = 1 / So + 1 / Si where f =15 cm and So = 45 cm Then use hi / ho = - Si / So where ho = 5 cm, So ...
[pdf]
... experimental images of absorbing and scattering objects in turbid media obtained by this approach. The method differs from least-squares techniques6 in that it is fast and noniterative. In addition to providing information about the position and shape of a hidden object or objects, projection images ...
... experimental images of absorbing and scattering objects in turbid media obtained by this approach. The method differs from least-squares techniques6 in that it is fast and noniterative. In addition to providing information about the position and shape of a hidden object or objects, projection images ...
Instructional Software for Visualizing Optical Phenomena
... Open Inventor allows us to separate the underlying structural elements of a scene from the behavioral elements of the scene. The structural elements – the geometry – are contained in an Inventorformatted text file. The behavioral elements are contained in shared binary objects. Open Inventor provide ...
... Open Inventor allows us to separate the underlying structural elements of a scene from the behavioral elements of the scene. The structural elements – the geometry – are contained in an Inventorformatted text file. The behavioral elements are contained in shared binary objects. Open Inventor provide ...
Imaging with complex ray-optical refractive
... the local window normal. A wave-optical consideration [1] reveals that such ray-rotating windows, if they existed, could create wave-optically impossible light-ray fields: light-ray direction is given by the gradient of the eikonal, ∇ϕ; for the example of an incident cylindrical wave front with a qu ...
... the local window normal. A wave-optical consideration [1] reveals that such ray-rotating windows, if they existed, could create wave-optically impossible light-ray fields: light-ray direction is given by the gradient of the eikonal, ∇ϕ; for the example of an incident cylindrical wave front with a qu ...
Retroreflector
A retroreflector (sometimes called a retroflector or cataphote) is a device or surface that reflects light back to its source with a minimum of scattering. In a retroreflector an electromagnetic wavefront is reflected back along a vector that is parallel to but opposite in direction from the wave's source. The angle of incidence at which the device or surface reflects light in this way is greater than zero, unlike a planar mirror, which does this only if the mirror is exactly perpendicular to the wave front, having a zero angle of incidence.