Edge-enhanced imaging with polyvinyl alcohol/acrylamide photopolymer gratings 1510
... We used an unslanted phase grating recorded on a PVA/acrylamide photopolymer (preparation and composition details are given in Ref. 11) exposed to the green line (514 nm) of an argon laser with a symmetrical mount. The two beams form an angle of 16.8± with respect to the normal of the plate and gene ...
... We used an unslanted phase grating recorded on a PVA/acrylamide photopolymer (preparation and composition details are given in Ref. 11) exposed to the green line (514 nm) of an argon laser with a symmetrical mount. The two beams form an angle of 16.8± with respect to the normal of the plate and gene ...
Images and Plane Mirrors
... As shown in figure (a), a plane (flat) mirror can form a virtual image of a light source (said to be the object, O) by redirecting light rays emerging from the source. The image can be seen where backward extensions of reflected rays pass through one another. The object’s distance p from the mirror ...
... As shown in figure (a), a plane (flat) mirror can form a virtual image of a light source (said to be the object, O) by redirecting light rays emerging from the source. The image can be seen where backward extensions of reflected rays pass through one another. The object’s distance p from the mirror ...
The Ultrasound Machine
... The processed data and/ or images can be stored on disk. The disks can be hard ,floppy disk, compact discs (CDs) or digital video discs (DVDs). Typically, a patient's ultrasound scans are stored on a floppy disk and archived with the patient's medical ...
... The processed data and/ or images can be stored on disk. The disks can be hard ,floppy disk, compact discs (CDs) or digital video discs (DVDs). Typically, a patient's ultrasound scans are stored on a floppy disk and archived with the patient's medical ...
Multi-Colour and Tunable-Colour Pyroelectric Detectors
... worse performance /5/. Hence a double-stack |LH|2 was chosen as Bragg reflector and the spectral range of 3…5 µm was divided in two sub-ranges with each 1300 nm from 3.0...4.3 µm und 3.7...5.0 µm. The backsides of the wafer were anti-reflection coated to reduce reflection losses and ripples in the h ...
... worse performance /5/. Hence a double-stack |LH|2 was chosen as Bragg reflector and the spectral range of 3…5 µm was divided in two sub-ranges with each 1300 nm from 3.0...4.3 µm und 3.7...5.0 µm. The backsides of the wafer were anti-reflection coated to reduce reflection losses and ripples in the h ...
Adiabatic far-field sub-diffraction imaging ARTICLE Hu Cang *, Alessandro Salandrino
... lthough a tsunami is devastating near land, it is barely noticeable in the open ocean. This is because the sea floor near the land slows down the tsunami, compressing its wavelength from hundreds of kilometres1 to metres and rapidly increasing its amplitude to be destructive. Recently, a similar opti ...
... lthough a tsunami is devastating near land, it is barely noticeable in the open ocean. This is because the sea floor near the land slows down the tsunami, compressing its wavelength from hundreds of kilometres1 to metres and rapidly increasing its amplitude to be destructive. Recently, a similar opti ...
Translation-invariant object recognition system using an optical correlator and a super-
... database and speeds up the search process. A major disadvantage of the SPHOC in the present form is that it is difficult to achieve translation-invariant correlation when using a thick holographic grating material. In this paper, we propose an alternative object recognition system that consists of t ...
... database and speeds up the search process. A major disadvantage of the SPHOC in the present form is that it is difficult to achieve translation-invariant correlation when using a thick holographic grating material. In this paper, we propose an alternative object recognition system that consists of t ...
Photon mapping of individual Ag particles on MgO/Mo(001)
... discussed before.24 The other two bands are assigned to the in-plane (2.1 eV) and out-of-plane Ag plasmon modes (2.75 eV), implying a downshift of ∼0.6 eV with respect to their calculated positions. Such a shift is compatible with the anticipated influence of the STM tip on the cluster polarizabilit ...
... discussed before.24 The other two bands are assigned to the in-plane (2.1 eV) and out-of-plane Ag plasmon modes (2.75 eV), implying a downshift of ∼0.6 eV with respect to their calculated positions. Such a shift is compatible with the anticipated influence of the STM tip on the cluster polarizabilit ...
The Optical Design of Miniaturized Microscope Objective for CARS
... sample side (NA S) and optical resolution is proportional to the first power of numerical aperture (NAS). Therefore, in order to decide on an appropriate NAS, we refer to the research of H. Wang and co-workers [17]. They have used the conventional microscope objective with needle-like bill, namely t ...
... sample side (NA S) and optical resolution is proportional to the first power of numerical aperture (NAS). Therefore, in order to decide on an appropriate NAS, we refer to the research of H. Wang and co-workers [17]. They have used the conventional microscope objective with needle-like bill, namely t ...
IOSR Journal of Applied Physics (IOSR-JAP)
... Nanotechnology concerns with the development of experimental processes for the synthesis of nanoparticles of different sizes, shapes and controlled dispersity [1] Recently, metal nano particles have been intensively studied due to widely exploited use in catalysis[2], photonics[3], optoelectronics[4 ...
... Nanotechnology concerns with the development of experimental processes for the synthesis of nanoparticles of different sizes, shapes and controlled dispersity [1] Recently, metal nano particles have been intensively studied due to widely exploited use in catalysis[2], photonics[3], optoelectronics[4 ...
31.3. Rear Projection - Contrast and Gain
... decrease significantly in cost, projection systems will be marketable. In a sense CRTs are projections systems, but for large areas, the evacuated glass envelope becomes too large and heavy. Projection systems using some sort of spatial light modulation (SLM) have an advantage since the optical path ...
... decrease significantly in cost, projection systems will be marketable. In a sense CRTs are projections systems, but for large areas, the evacuated glass envelope becomes too large and heavy. Projection systems using some sort of spatial light modulation (SLM) have an advantage since the optical path ...
LM Ch 4: Optics
... more details). Today, compound lens consists of many lens elements as shown in figure 4.15. These elements are necessary for magnification and correction of various lens aberrations. Modern microscopes use compound lenses. Even so, in considering the optical system of the compound microscope we can ...
... more details). Today, compound lens consists of many lens elements as shown in figure 4.15. These elements are necessary for magnification and correction of various lens aberrations. Modern microscopes use compound lenses. Even so, in considering the optical system of the compound microscope we can ...
Bright Field Microscopy
... •The phase contrast microscope is designed to take advantage of phase differences between objects in a specimen and in the surrounding medium. However, it is not simply a phase difference that is necessary, but also diffraction from the specimen must occur for the phase contrast microscope to work. ...
... •The phase contrast microscope is designed to take advantage of phase differences between objects in a specimen and in the surrounding medium. However, it is not simply a phase difference that is necessary, but also diffraction from the specimen must occur for the phase contrast microscope to work. ...
Brightfield contrast methods
... Darkfield: By using a condenser N.A. greater than the objective N.A., 0th order undiffracted light is rejected at the objective back focal plane, and does not contribute to image formation. Only interference of higher-order diffracted light contributes to image formation. The result is that details ...
... Darkfield: By using a condenser N.A. greater than the objective N.A., 0th order undiffracted light is rejected at the objective back focal plane, and does not contribute to image formation. Only interference of higher-order diffracted light contributes to image formation. The result is that details ...
Learning to Estimate Scenes from Images
... details) of a sub-sampled image. The "scene" to be estimated is the high-frequency components of the full-resolution image, Fig. 4. We improved our method for this second problem. A faithful image representation requires so many vector codes that it becomes infeasible to measure the prior and co-occ ...
... details) of a sub-sampled image. The "scene" to be estimated is the high-frequency components of the full-resolution image, Fig. 4. We improved our method for this second problem. A faithful image representation requires so many vector codes that it becomes infeasible to measure the prior and co-occ ...
Supplementary Information
... Although the image can be directly observed and confirmed from the experiment, the formation of the visual image is still confusing unless the physical mechanism can be explained theoretically. A qualitative strategy, which has already been used in Ref. [16] of the main text to describe the imaging ...
... Although the image can be directly observed and confirmed from the experiment, the formation of the visual image is still confusing unless the physical mechanism can be explained theoretically. A qualitative strategy, which has already been used in Ref. [16] of the main text to describe the imaging ...
Synchronized ti scattering microscopy
... for microscopy, because it has improved sensitivity, no image artifacts from spectral distortions or coherent signal addition, and a linear concentration dependence. There has also been increasing interest in using CRS microscopy for medical diagnostics [4], as well as practical applications outside ...
... for microscopy, because it has improved sensitivity, no image artifacts from spectral distortions or coherent signal addition, and a linear concentration dependence. There has also been increasing interest in using CRS microscopy for medical diagnostics [4], as well as practical applications outside ...
Evanescent-field optical microscopy: effects of polarization, tip
... After a brief description of the working principle and the instrumentation, microscopic results displaying effects of polarization, tip shape and radiative waves are presented and discussed. ...
... After a brief description of the working principle and the instrumentation, microscopic results displaying effects of polarization, tip shape and radiative waves are presented and discussed. ...
White-light diffraction tomography of unlabelled live cells
... X-ray diffraction. When dealing with transparent objects, measuring the complex field at the image plane yields higher sensitivity than measuring in the far-zone38. Third, WDT is implemented using an existing phase contrast microscope with white-light illumination, and the three-dimensional structure ...
... X-ray diffraction. When dealing with transparent objects, measuring the complex field at the image plane yields higher sensitivity than measuring in the far-zone38. Third, WDT is implemented using an existing phase contrast microscope with white-light illumination, and the three-dimensional structure ...
Color Astronomical Imaging Using Polarizing Filters
... of orthogonal channels offset by 45 degrees for the differencing as illustrated in Figure 8. Coincidentally the image produced using the channel pairs in this configuration yielded a more detailed image than the previous work by Malin and Pasachoff. The Crab Nebula Stokes polarigrams of Figures 6 an ...
... of orthogonal channels offset by 45 degrees for the differencing as illustrated in Figure 8. Coincidentally the image produced using the channel pairs in this configuration yielded a more detailed image than the previous work by Malin and Pasachoff. The Crab Nebula Stokes polarigrams of Figures 6 an ...
Imaging properties of supercritical angle
... A fundamental goal of physical optics is the characterization of the imaging properties of a given optical system. When dealing with imaging of non-coherent fluorescent sources, this is equivalent to calculating the image of single dipole emitters as a function of their position in sample space. For ...
... A fundamental goal of physical optics is the characterization of the imaging properties of a given optical system. When dealing with imaging of non-coherent fluorescent sources, this is equivalent to calculating the image of single dipole emitters as a function of their position in sample space. For ...
Student`s guide - National Centre for Biotechnology Education
... National Centre for Biotechnology Education | Science and Plants for Schools ...
... National Centre for Biotechnology Education | Science and Plants for Schools ...
Electrostatic micromirrors for subaperturing in an
... being driven into one of two fixed positions by the application of appropriate logic voltages. Unlike the sectors of the analog deformable mirrors used for wavefront correction, which are a continuously variable and interconnected as a single mirror membrane, the pixels of a DMD are not interconnecte ...
... being driven into one of two fixed positions by the application of appropriate logic voltages. Unlike the sectors of the analog deformable mirrors used for wavefront correction, which are a continuously variable and interconnected as a single mirror membrane, the pixels of a DMD are not interconnecte ...
Diode-Array UV Solar Spectroradiometer Implementing
... that implementing a digital micromirror device (DMD) could significantly reduce the impact of stray light using two techniques. The first involves leveling the dynamic range of the incoming radiation by selective wavelength modulation [2, 3] where the undesired wavelengths are modulated at high freq ...
... that implementing a digital micromirror device (DMD) could significantly reduce the impact of stray light using two techniques. The first involves leveling the dynamic range of the incoming radiation by selective wavelength modulation [2, 3] where the undesired wavelengths are modulated at high freq ...