Scanning Tunneling Microscopy
... improvement in the past three decades has been confocal microscopy, in which a pair of pinhole apertures is used to collect only in-focus light in the focal plane – thereby allowing both a higher-resolution image, and greater three-dimensional imaging capability. Because confocal microscopy usually ...
... improvement in the past three decades has been confocal microscopy, in which a pair of pinhole apertures is used to collect only in-focus light in the focal plane – thereby allowing both a higher-resolution image, and greater three-dimensional imaging capability. Because confocal microscopy usually ...
Surface Watch - YMS Magazine
... which leverages the system architecture of KLA-Tencor’s Surfscan SP2™ unpatterned wafer inspection system to deliver surface-scattering data at unprecedented sensitivity. The measurement sensitivity of this system can be applied to detect changes in surface roughness for various surface types. Sub-a ...
... which leverages the system architecture of KLA-Tencor’s Surfscan SP2™ unpatterned wafer inspection system to deliver surface-scattering data at unprecedented sensitivity. The measurement sensitivity of this system can be applied to detect changes in surface roughness for various surface types. Sub-a ...
AcuityXR Technology Significantly Enhances Lateral Resolution of
... modes. Figure 3 shows one measurement from each technique. First, one can clearly see that using the AcuityXR measurement, enough resolution is gained to reveal the full separation between the lines, whereas for the PSI image they are blurred enough that the surface height between the lines is not t ...
... modes. Figure 3 shows one measurement from each technique. First, one can clearly see that using the AcuityXR measurement, enough resolution is gained to reveal the full separation between the lines, whereas for the PSI image they are blurred enough that the surface height between the lines is not t ...
1489_1.pdf
... As discussed, although the best SNR is obtained when the detection and generation spots are superimposed, the detection should be separated from the generation by a certain distance. On the contrary, the depth evaluation becomes very difficult if on uses too wide separation (too large incident and d ...
... As discussed, although the best SNR is obtained when the detection and generation spots are superimposed, the detection should be separated from the generation by a certain distance. On the contrary, the depth evaluation becomes very difficult if on uses too wide separation (too large incident and d ...
Light scattering described in the mode picture
... The description of the effect of a wave-front deformation by a single number such as the TIS or the scattering angle, above which the light is considered as being lost from the original mode, is a relatively poor one and might not be adequate for all applications. A more appropriate approach is to u ...
... The description of the effect of a wave-front deformation by a single number such as the TIS or the scattering angle, above which the light is considered as being lost from the original mode, is a relatively poor one and might not be adequate for all applications. A more appropriate approach is to u ...
Surface Waves
... Surface waves can exist at the interface between an ordinary material and a nonlinear material. It has been shown that when the lower refractive index material has a positive Kerr coefficient, the surface wave propagates with perfectly constant shape and intensity and can be excited directly by ...
... Surface waves can exist at the interface between an ordinary material and a nonlinear material. It has been shown that when the lower refractive index material has a positive Kerr coefficient, the surface wave propagates with perfectly constant shape and intensity and can be excited directly by ...
H. F. Ghaemi - Department of Physics | Oregon State
... We identify the transmission minima as the result of Wood’s anomaly,11 which was observed in diffraction gratings and occurs when a diffracted order becomes tangent to the plane of the grating. When the order disappears, the light intensity is redistributed among the remaining orders; it has been su ...
... We identify the transmission minima as the result of Wood’s anomaly,11 which was observed in diffraction gratings and occurs when a diffracted order becomes tangent to the plane of the grating. When the order disappears, the light intensity is redistributed among the remaining orders; it has been su ...
Quasi-3D plasmonic coupling scheme for near-field optical lithography and imaging Y W
... techniques usually yield to low throughputs and complicated systems. Recently, many researchers have been working on improving both the resolution and throughput by developing new nanoscale plasmonic structures for NSOM and aNSOM applications [16,17]. Here, we report a new optical coupling scheme, n ...
... techniques usually yield to low throughputs and complicated systems. Recently, many researchers have been working on improving both the resolution and throughput by developing new nanoscale plasmonic structures for NSOM and aNSOM applications [16,17]. Here, we report a new optical coupling scheme, n ...
Consequences of the WFC3 IR detector 24 degrees tilt
... The current optical design for the IR channel of WFC3 has a focal plane tilted by 24 degrees to the chief ray due to the off-axis correcting optics. A similar design is used in, e.g., ACS but its effect is potentially amplified in WFC3 because of the bigger angle (it is only 11 degrees in ACS) and t ...
... The current optical design for the IR channel of WFC3 has a focal plane tilted by 24 degrees to the chief ray due to the off-axis correcting optics. A similar design is used in, e.g., ACS but its effect is potentially amplified in WFC3 because of the bigger angle (it is only 11 degrees in ACS) and t ...
Light scattering by randomly rough surfaces
... A basic quantity for the description of the random process is the two-point height correlation function hζ(x1 )ζ(x01 )i = δ 2 W (|x1 − x01 |), where the angled brackets represent an average over an ensemble of realizations of the surface, and δ 2 = hζ 2 (x1 )i. The parameter δ represents the standar ...
... A basic quantity for the description of the random process is the two-point height correlation function hζ(x1 )ζ(x01 )i = δ 2 W (|x1 − x01 |), where the angled brackets represent an average over an ensemble of realizations of the surface, and δ 2 = hζ 2 (x1 )i. The parameter δ represents the standar ...
Near-field amplitude and phase recovery using phase
... light[16, 15]. Another method for recovery of this information is pseudoheterodyning, in which a small modulation of the reference beam is introduced, along with demodulation techniques similar to heterodyning[5]. Heterodyne and pseudoheterodye sSNOM have been applied to a variety of problems, inclu ...
... light[16, 15]. Another method for recovery of this information is pseudoheterodyning, in which a small modulation of the reference beam is introduced, along with demodulation techniques similar to heterodyning[5]. Heterodyne and pseudoheterodye sSNOM have been applied to a variety of problems, inclu ...
Determination of Electric-Field, Magnetic-Field, and Electric
... (nano-CVD) an off-resonant Pt point dipole probe is fabricated perpendicularly onto the apex of a commercial AFM Si cantilever tip as shown in Fig. 1(c). The normalized tip response to s- and p-polarized light (0.97 and 1.0, respectively) allows the assignment of the relative magnitudes of the in-pl ...
... (nano-CVD) an off-resonant Pt point dipole probe is fabricated perpendicularly onto the apex of a commercial AFM Si cantilever tip as shown in Fig. 1(c). The normalized tip response to s- and p-polarized light (0.97 and 1.0, respectively) allows the assignment of the relative magnitudes of the in-pl ...
Effect of varying electric potential on surface
... Dimitri V. Nanopoulos, and Hans A. Schuessler ...
... Dimitri V. Nanopoulos, and Hans A. Schuessler ...
Plasmonic modes of gold nano-particle arrays on thin gold
... modes (‘a-modes’, defined by the symmetry of the tangential magnetic field with respect to the gold-film plane; the field maximum is at the gold-glass interface) in different grating orders (lines). Due to too small array periods, symmetric SPP modes cannot be excited. The grating coupling resonance ...
... modes (‘a-modes’, defined by the symmetry of the tangential magnetic field with respect to the gold-film plane; the field maximum is at the gold-glass interface) in different grating orders (lines). Due to too small array periods, symmetric SPP modes cannot be excited. The grating coupling resonance ...
V Groove Measurement with White Light Interferometer
... 2. V-groove measurement A Silicon V-groove specimen with the depth profile shown in figure 1 was purchased. The Vgroove was etched into a polished Silicon substrate and has an accurate internal angle of 70.52 degrees defined by the lattice dimensions. A Zygo NewView 5000 White Light Interferometer, ...
... 2. V-groove measurement A Silicon V-groove specimen with the depth profile shown in figure 1 was purchased. The Vgroove was etched into a polished Silicon substrate and has an accurate internal angle of 70.52 degrees defined by the lattice dimensions. A Zygo NewView 5000 White Light Interferometer, ...
Vacuum Evaporation
... their energy to the substrate, lower their temperature and condense. Since the vapor pressure at the new temperature is much higher, they will not reevaporate and adhere to the substrate. The deposition thickness is a function of the evaporation rate, the geometry of the source and the substrate and ...
... their energy to the substrate, lower their temperature and condense. Since the vapor pressure at the new temperature is much higher, they will not reevaporate and adhere to the substrate. The deposition thickness is a function of the evaporation rate, the geometry of the source and the substrate and ...
Global measurement of water waves by Fourier transform
... the dam-break problem (i.e., the sudden release of a volume of liquid down a slope) and measured the timeevolution of the flow. In order to further our understanding of FSD mechanisms, this paper presents an optical profilometry technique that allows for high-resolution 3D whole-field reconstruction ...
... the dam-break problem (i.e., the sudden release of a volume of liquid down a slope) and measured the timeevolution of the flow. In order to further our understanding of FSD mechanisms, this paper presents an optical profilometry technique that allows for high-resolution 3D whole-field reconstruction ...
Tabletop nanometer extreme ultraviolet imaging in an
... need for a large number of scan positions. This also results in fewer necessary scan positions when imaging a large field of view. Third, reflection ptychography produces surface images containing quantitative amplitude and phase information about the sample that are in excellent agreement with atom ...
... need for a large number of scan positions. This also results in fewer necessary scan positions when imaging a large field of view. Third, reflection ptychography produces surface images containing quantitative amplitude and phase information about the sample that are in excellent agreement with atom ...
Simulation of optical near and far fields of dielectric apertureless
... Beyond L ≈ 200 nm resonances appear. They are related to the length scales given by the wavelengths outside and inside the tip on the one hand and tip size parameters on the other—notably the tip length and, as long as it is strongly illuminated, the radius of the top hemispherical cap. The first ma ...
... Beyond L ≈ 200 nm resonances appear. They are related to the length scales given by the wavelengths outside and inside the tip on the one hand and tip size parameters on the other—notably the tip length and, as long as it is strongly illuminated, the radius of the top hemispherical cap. The first ma ...
Toward the development of a Three-Dimensional Mid–Field Microscope
... passes through a hole has a very small diffraction in extreme contrast to the wide angle predicted by diffraction theory. Based on this effect, we propose here a new type of microscopy that we term mid-field microscopy. It combines an illumination of the sample through a metallic hole-array with far ...
... passes through a hole has a very small diffraction in extreme contrast to the wide angle predicted by diffraction theory. Based on this effect, we propose here a new type of microscopy that we term mid-field microscopy. It combines an illumination of the sample through a metallic hole-array with far ...
A) Sn4+ → Sn2+ + 2e
... B) Anode: 2 Cl – ® Cl 2 + 2e – Cathode: 2 H 2O + 2e – ® H 2 + 2 OH – C) Anode: 2 H 2O ® O 2 + 4 H+ + 4e – Cathode: 2 Zn2+ + 4e – ® 2 Zn D) Anode: 2 H2O ® O2 + 4 H+ + 4e – Cathode: 4 H 2 O + 4e – ® 2 H 2 + 4 OH – E) Anode: Cl 2 + 2e – ® 2 Cl – Cathode: Zn ® Zn 2+ + 2e – 69. What are the anode and cat ...
... B) Anode: 2 Cl – ® Cl 2 + 2e – Cathode: 2 H 2O + 2e – ® H 2 + 2 OH – C) Anode: 2 H 2O ® O 2 + 4 H+ + 4e – Cathode: 2 Zn2+ + 4e – ® 2 Zn D) Anode: 2 H2O ® O2 + 4 H+ + 4e – Cathode: 4 H 2 O + 4e – ® 2 H 2 + 4 OH – E) Anode: Cl 2 + 2e – ® 2 Cl – Cathode: Zn ® Zn 2+ + 2e – 69. What are the anode and cat ...
The orbital angular momentum of plasmons caught on video
... To make it possible to observe the motion of the spiralling plasmons in space and time required a concerted effort of the four involved research groups. Researchers from the University of Stuttgart fabricated small monocrystalline gold ‘islands’ on silicon su ...
... To make it possible to observe the motion of the spiralling plasmons in space and time required a concerted effort of the four involved research groups. Researchers from the University of Stuttgart fabricated small monocrystalline gold ‘islands’ on silicon su ...
Lecture 10: Surface Plasmon Excitation
... There exists a film thickness for perfect coupling (destructive interference between two refl. beams) When light coupled in perfectly, all the EM energy dissipated in the film) ...
... There exists a film thickness for perfect coupling (destructive interference between two refl. beams) When light coupled in perfectly, all the EM energy dissipated in the film) ...
Overview of Surface Plasmon Resonance
... The SensíQ line of instruments are surface plasmon resonance (SPR)-based biosensing platforms that enable high end functional characterization of biomolecules. SPR is an optical phenomenon that provides a non-invasive, label-free means of observing binding interactions between an injected analyte an ...
... The SensíQ line of instruments are surface plasmon resonance (SPR)-based biosensing platforms that enable high end functional characterization of biomolecules. SPR is an optical phenomenon that provides a non-invasive, label-free means of observing binding interactions between an injected analyte an ...