Profilometer - Department of Mechanical Engineering
... Contact Profilometer • Advantages & Disadvantages Acceptance & Easy to Use Surface Independence Resolution : The stylus tip radius can be as small as 20 nanometres Direct Technique : No modelling required. Not suitable for very soft (or even liquid) and easily damageable surface Very ha ...
... Contact Profilometer • Advantages & Disadvantages Acceptance & Easy to Use Surface Independence Resolution : The stylus tip radius can be as small as 20 nanometres Direct Technique : No modelling required. Not suitable for very soft (or even liquid) and easily damageable surface Very ha ...
Characterization of Thin-Film Polyamide Nanofiltration Membranes
... filtration, the membranes were characterized using several different techniques: atomic force microscopy, electrokinetic analysis, scanning electron microscopy, and goniometry (contact angle analysis). Characterization of unmodified and modified membranes helps determine which membrane surface featu ...
... filtration, the membranes were characterized using several different techniques: atomic force microscopy, electrokinetic analysis, scanning electron microscopy, and goniometry (contact angle analysis). Characterization of unmodified and modified membranes helps determine which membrane surface featu ...
Measurement of Oriented Films and Liquid Crystal
... within the xy plane parallel to the prism. This result is consistent with the knowledge that the chains are oriented (inclined) within a plane in TN liquid crystals in the absence of an electric field. Analyzing other absorption peaks that show differences make it possible to achieve a more detailed ...
... within the xy plane parallel to the prism. This result is consistent with the knowledge that the chains are oriented (inclined) within a plane in TN liquid crystals in the absence of an electric field. Analyzing other absorption peaks that show differences make it possible to achieve a more detailed ...
SCANNING ELECTRON MICROSCOPE (SEM)
... Nonconductive solid specimens are coated with a layer of conductive material. An ultrathin coating of electricallyconducting material such as, gold, gold/palladium alloy, platinum, tungsten or graphite is deposited on the sample either by low vacuum sputter coating or by high vacuum evaporation. Thi ...
... Nonconductive solid specimens are coated with a layer of conductive material. An ultrathin coating of electricallyconducting material such as, gold, gold/palladium alloy, platinum, tungsten or graphite is deposited on the sample either by low vacuum sputter coating or by high vacuum evaporation. Thi ...
3D widefield light microscopy with better than 100 nm axial resolution
... independent and can with advantage be used at the same time (I5M). In either mode, acquisition proceeds just as in normal computational deconvolution microscopy (Agard et al., 1989): a focal series of images are recorded, with the ...
... independent and can with advantage be used at the same time (I5M). In either mode, acquisition proceeds just as in normal computational deconvolution microscopy (Agard et al., 1989): a focal series of images are recorded, with the ...
Protein sorption on soft contact lenses: a comparison between
... The amount of deposits increases with the hours of wear, mainly between 4 and 24 hours for hydrogel materials. On the contrary, silicone-hydrogel lenses have a reduced affinity with proteins and, in some cases, no differences have been detected between those used for 4 hours and 3 weeks. Protein sor ...
... The amount of deposits increases with the hours of wear, mainly between 4 and 24 hours for hydrogel materials. On the contrary, silicone-hydrogel lenses have a reduced affinity with proteins and, in some cases, no differences have been detected between those used for 4 hours and 3 weeks. Protein sor ...
observation of longitudinal acoustic phonons in layer
... function of separation of the surfaces (Israelachvili & Adams, 1978; C allaghan & Ottewill, 1974). These show that at moderate separations the forces are well described by the DLVO (Derjaguin, Landau, Verwey and Overbeek) (Verwey & Overbeek, 1948) theory of lyophobic colloid stability, but at short ...
... function of separation of the surfaces (Israelachvili & Adams, 1978; C allaghan & Ottewill, 1974). These show that at moderate separations the forces are well described by the DLVO (Derjaguin, Landau, Verwey and Overbeek) (Verwey & Overbeek, 1948) theory of lyophobic colloid stability, but at short ...
effect of coupling agent on the interfacial properties of 3d ramie
... remained at a low level. However, thanks to SCA and ethanol treatment much more matrix has been found on the surface of ramie fibers and between fibers. Hence, it is not surprising that the mechanical properties of Sample C show better results than Sample A and B due to better dipersion of matrix. I ...
... remained at a low level. However, thanks to SCA and ethanol treatment much more matrix has been found on the surface of ramie fibers and between fibers. Hence, it is not surprising that the mechanical properties of Sample C show better results than Sample A and B due to better dipersion of matrix. I ...
In situ self-release of thick GaN wafer from
... Figure S2 shows the band structures of the surface models for various polar and non-polar planes. One can see that the surface states of m(2)-plane [Fig. S2d] largely occupy the energy range where the Fermi level resides. This means that this type of surface would be more metallic, active and unstab ...
... Figure S2 shows the band structures of the surface models for various polar and non-polar planes. One can see that the surface states of m(2)-plane [Fig. S2d] largely occupy the energy range where the Fermi level resides. This means that this type of surface would be more metallic, active and unstab ...
Roughness analysis of the
... interaction between the surface and the environment. Those properties are crucial to surface interaction because they affect the important parameters such as real area of contact, friction, wear and lubrication [1]. Surface roughness represents significant information both for scientific and industr ...
... interaction between the surface and the environment. Those properties are crucial to surface interaction because they affect the important parameters such as real area of contact, friction, wear and lubrication [1]. Surface roughness represents significant information both for scientific and industr ...
Direct measurement of standing evanescent waves with a photon
... that make it possible to record optical images of surfaces with visible light at a spatial resolution well below Abb6's diffraction limit of about half of a wavelength. One can achieve this by raster scanning a small aperture of subwavelength diameter in close proximity over the sample surface. Eith ...
... that make it possible to record optical images of surfaces with visible light at a spatial resolution well below Abb6's diffraction limit of about half of a wavelength. One can achieve this by raster scanning a small aperture of subwavelength diameter in close proximity over the sample surface. Eith ...
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 ...
The Effects of Varying Force and Contact on ATR
... 720 cm-1 while amorphous regions have a single broader band. In the example shown in Figure 4 a highly crystalline sample of polyethylene is converted to largely amorphous material by the applied force. This is unexpected as applied pressure is expected to increase crystallinity because the crystall ...
... 720 cm-1 while amorphous regions have a single broader band. In the example shown in Figure 4 a highly crystalline sample of polyethylene is converted to largely amorphous material by the applied force. This is unexpected as applied pressure is expected to increase crystallinity because the crystall ...
Confocal Live Cell Microscopy
... Now you can make a maximum projection through your z-stack at each time point. Select the “Transparency” tab and check that “Maximum” is chosen (Figure 18). In the “Projection” tab, choose “Number of projections” as 1, and check the box beside “Single time index” (Figure 17). Click “Apply”. Now unch ...
... Now you can make a maximum projection through your z-stack at each time point. Select the “Transparency” tab and check that “Maximum” is chosen (Figure 18). In the “Projection” tab, choose “Number of projections” as 1, and check the box beside “Single time index” (Figure 17). Click “Apply”. Now unch ...
Imaging scanning tunneling microscope
... The prospect of creating photonic devices based on surface plasmon propagation is attracting increasing attention.1–5 The motivation has been to create miniaturized optics that would enable higher bandwidth optical computing, all-optical interconnects for telecommunications, or even ‘‘nano-lasers.’’ ...
... The prospect of creating photonic devices based on surface plasmon propagation is attracting increasing attention.1–5 The motivation has been to create miniaturized optics that would enable higher bandwidth optical computing, all-optical interconnects for telecommunications, or even ‘‘nano-lasers.’’ ...
Aalborg Universitet Near-field electrospinning of dielectric-loaded surface plasmon polariton waveguides
... electromagnetic modes, propagating along metal-dielectric interfaces [2] and are bound to the surface due to the exponential decay of the intensity along the normal direction. Many efforts have been made to achieve efficient lateral confinement in order to efficiently guide surface plasmons. Various ...
... electromagnetic modes, propagating along metal-dielectric interfaces [2] and are bound to the surface due to the exponential decay of the intensity along the normal direction. Many efforts have been made to achieve efficient lateral confinement in order to efficiently guide surface plasmons. Various ...
A Study of YVO4 - Sweet Briar College
... introduced/pumped with ions they give off energy in the form of light. This property of some crystals makes them very useful in laser devices. For example the very popular Nd:YAG laser is produced by pumping the YAG crystal with neodymium. YVO4 may replace the popular YAG crystal in diode pumped las ...
... introduced/pumped with ions they give off energy in the form of light. This property of some crystals makes them very useful in laser devices. For example the very popular Nd:YAG laser is produced by pumping the YAG crystal with neodymium. YVO4 may replace the popular YAG crystal in diode pumped las ...
Tomographic Interference Microscopy of Living Cells
... The size of sample must be smaller than the diameter of the beam waist near the focal plane of the objective. For large objects it is necessary to use the technique represented in Fig 1e. The original procedure of the collected data processing, patented by us [11], allows us to obtain parallel proje ...
... The size of sample must be smaller than the diameter of the beam waist near the focal plane of the objective. For large objects it is necessary to use the technique represented in Fig 1e. The original procedure of the collected data processing, patented by us [11], allows us to obtain parallel proje ...
C 3 HAPTER
... While the conventional SEM offer many advantages over optical microscopy some of the constraints include the use of a high vacuum, conductive coating on material which can hide small surface features, as well as the need for drying samples prior to imaging. Biological samples are normally fixated in ...
... While the conventional SEM offer many advantages over optical microscopy some of the constraints include the use of a high vacuum, conductive coating on material which can hide small surface features, as well as the need for drying samples prior to imaging. Biological samples are normally fixated in ...
Millipede Memory
... storage fields on an area of less than 3 x 3mm. Assuming an areal density of 500 Gb/in², one storage field of 92 x 92 m has a capacity of 0.875 MB and the entire 32 x 32 array with 1024 storage fields has a capacity of 0.9 Gb on 3 x 3mm. The storage capacity of the system scales with the areal densi ...
... storage fields on an area of less than 3 x 3mm. Assuming an areal density of 500 Gb/in², one storage field of 92 x 92 m has a capacity of 0.875 MB and the entire 32 x 32 array with 1024 storage fields has a capacity of 0.9 Gb on 3 x 3mm. The storage capacity of the system scales with the areal densi ...
Effects of the Thickness of Niobium Surface Oxide Layers on Field
... profilometer scans were done on the two samples. Typical profilometer photos are shown in Fig.3. The surface of sample# 7 appears to have more irregularity in small length scales. But interestingly the root mean squares (RMSs) of the two samples are very close. In fact, sample# 7 is a bit rougher th ...
... profilometer scans were done on the two samples. Typical profilometer photos are shown in Fig.3. The surface of sample# 7 appears to have more irregularity in small length scales. But interestingly the root mean squares (RMSs) of the two samples are very close. In fact, sample# 7 is a bit rougher th ...
From near-field optics to optical antennas
... the field depends on the geometry of that source. For example, the fields near a planar sample surface are conveniently expanded in a plane-wave basis, also known as the angular spectrum representation, and can be described as a superposition of propagating plane waves and evanescent waves, emitted ...
... the field depends on the geometry of that source. For example, the fields near a planar sample surface are conveniently expanded in a plane-wave basis, also known as the angular spectrum representation, and can be described as a superposition of propagating plane waves and evanescent waves, emitted ...
Scanning Electron Microscopy (SEM)
... Beam damage occurs when a specimen area is irradiated with an electron probe for a long time at high magnification which can be eliminated by use low accelerating voltage, decrease electron beam intensity and shorten exposure time. When a nonconductive specimen is directly illuminated with an electr ...
... Beam damage occurs when a specimen area is irradiated with an electron probe for a long time at high magnification which can be eliminated by use low accelerating voltage, decrease electron beam intensity and shorten exposure time. When a nonconductive specimen is directly illuminated with an electr ...
Wide-field extended-resolution fluorescence
... The concept of a perfect lens realized with negative refractive index materials was recently proposed [1]. Surface plasmon resonance (SPR) – resonant energy transfer from incident photons to electron density oscillations along a metal-dielectric interface – helps to enhance weak evanescent waves, w ...
... The concept of a perfect lens realized with negative refractive index materials was recently proposed [1]. Surface plasmon resonance (SPR) – resonant energy transfer from incident photons to electron density oscillations along a metal-dielectric interface – helps to enhance weak evanescent waves, w ...
PDF Link
... Of course, it can be beneficial to incorporate such procedures into an image formation pipeline. However, it is important in the interests of transparency that one clearly state any a priori assumptions used when reporting system resolution. This allows others in the coherent imaging community to un ...
... Of course, it can be beneficial to incorporate such procedures into an image formation pipeline. However, it is important in the interests of transparency that one clearly state any a priori assumptions used when reporting system resolution. This allows others in the coherent imaging community to un ...
Atomic force microscopy
Atomic-force microscopy (AFM) or scanning-force microscopy (SFM) is a very high-resolution type of Scanning probe microscopy (SPM), with demonstrated resolution on the order of fractions of a nanometer, more than 1000 times better than the optical diffraction limit.