7_SNOM
... The measurable quantities are the scattered and the absorbed light that is proportional to the cross section. Applying Mie theory of light scattering ...
... The measurable quantities are the scattered and the absorbed light that is proportional to the cross section. Applying Mie theory of light scattering ...
Biology 177: Principles of Modern Microscopy
... • TIRFM, like two photon, only excites sample at focal plane • TIRFM is cheaper to implement than confocal ...
... • TIRFM, like two photon, only excites sample at focal plane • TIRFM is cheaper to implement than confocal ...
June 4 - The 7th International Conference on Surface Plasmon
... spatial resolution below the diffraction limit. This leads to smearing of the spatial photocurrent maps, which can mask important details. Here we introduce a photocurrent measurement technique which is not limited by the diffraction limit. Using a scattering-type scanning near-field optical microsc ...
... spatial resolution below the diffraction limit. This leads to smearing of the spatial photocurrent maps, which can mask important details. Here we introduce a photocurrent measurement technique which is not limited by the diffraction limit. Using a scattering-type scanning near-field optical microsc ...
Plasmonic Nanopore for Electrical Profiling of
... of the light intensity distribution. The fundamental difference between the two approaches is that our new method is not based on light absorption by the buffer, but on local light absorption by the nanopore itself through excitation of plasmons in the nanoantenna. Due to the strong light− nanoantenna ...
... of the light intensity distribution. The fundamental difference between the two approaches is that our new method is not based on light absorption by the buffer, but on local light absorption by the nanopore itself through excitation of plasmons in the nanoantenna. Due to the strong light− nanoantenna ...
Research of Calcium Phosphates Using Fourier
... Fourier Transform Infrared Spectroscopy Liga Berzina-Cimdina and Natalija Borodajenko ...
... Fourier Transform Infrared Spectroscopy Liga Berzina-Cimdina and Natalija Borodajenko ...
Normal-Incidence Photoemission Electron Microscopy (NI
... interference. As this background intensity is integrated in time by the detector, it smears out, and any wave characteristic is lost. Therefore, such background does not influence the periodicity of the photoelectron yield modulation, which is discussed here. The result of the superposition of the n ...
... interference. As this background intensity is integrated in time by the detector, it smears out, and any wave characteristic is lost. Therefore, such background does not influence the periodicity of the photoelectron yield modulation, which is discussed here. The result of the superposition of the n ...
plse2oximetry - Pheonix India
... Equipment • Probes • The probe (sensor, transducer) is the part that comes in contact with the patient. • It contains one or more LEDs (photodiodes) that emit light at specific wavelengths and a photodetector (photocell, transducer). • The LEDs provide monochromatic light. This means that they e ...
... Equipment • Probes • The probe (sensor, transducer) is the part that comes in contact with the patient. • It contains one or more LEDs (photodiodes) that emit light at specific wavelengths and a photodetector (photocell, transducer). • The LEDs provide monochromatic light. This means that they e ...
Aperture interference and the volumetric resolution of light field
... sampling scheme, we could increase spatial resolution beyond simple pixel-count considerations. Indeed, we demonstrate that by combining angular samples in a manner that takes diffraction and interference into account while specifically targeting 3D as opposed to 4D reconstruction, one can outperfor ...
... sampling scheme, we could increase spatial resolution beyond simple pixel-count considerations. Indeed, we demonstrate that by combining angular samples in a manner that takes diffraction and interference into account while specifically targeting 3D as opposed to 4D reconstruction, one can outperfor ...
High spatial resolution performance of a triple Fabry–Pérot filtergraph
... within the channeled spectrum. Several filtergraphs using FPIs have been recently constructed for solar observations (Bonaccini et al. 1989; Bendlin et al. 1992; Cavallini 1998; Kentischer et al. 1998). The spectral passband of an FPI varies with the angle of incidence of a plane wave which transver ...
... within the channeled spectrum. Several filtergraphs using FPIs have been recently constructed for solar observations (Bonaccini et al. 1989; Bendlin et al. 1992; Cavallini 1998; Kentischer et al. 1998). The spectral passband of an FPI varies with the angle of incidence of a plane wave which transver ...
Implementing the Theory of Sum Frequency Generation Vibrational
... light is resonantly enhanced when the frequency of the tuneable infrared beam coincides with a vibrational mode of the molecules at the interface. By detecting the sum frequency (SF) light as a function of infrared frequency, a vibrational spectrum is obtained, which is up-shifted into the visible r ...
... light is resonantly enhanced when the frequency of the tuneable infrared beam coincides with a vibrational mode of the molecules at the interface. By detecting the sum frequency (SF) light as a function of infrared frequency, a vibrational spectrum is obtained, which is up-shifted into the visible r ...
Ultrafast Laser-induced Damage and the Influence of Spectral Effects
... The past several decades have seen the advent of the commercial femtosecond laser system as well as the use of ultrashort laser pulses to affect precise changes in a variety of materials.1,2 Ultrashort laser pulses are increasingly used for micro-machining,3,4 the writing of waveguides and other str ...
... The past several decades have seen the advent of the commercial femtosecond laser system as well as the use of ultrashort laser pulses to affect precise changes in a variety of materials.1,2 Ultrashort laser pulses are increasingly used for micro-machining,3,4 the writing of waveguides and other str ...
A Novel Pulse Measurement System by Using Laser Triangulation and a CMOS Image Sensor
... into consideration in TCM clinical practice. This paper describes the design of the arterial pulsation measurement (APM) system, and presents the results of tests conducted to verify the pulse measurement accuracy. The pulsation rate was derived from the frequency spectrum of the laser spot vibratio ...
... into consideration in TCM clinical practice. This paper describes the design of the arterial pulsation measurement (APM) system, and presents the results of tests conducted to verify the pulse measurement accuracy. The pulsation rate was derived from the frequency spectrum of the laser spot vibratio ...
Fundamental limit of nanophotonic light trapping in solar cells
... these two objectives is to use light-trapping schemes. Light trapping allows cells to absorb sunlight using an active material layer that is much thinner than the material’s intrinsic absorption length. This effect then reduces the amount of materials used in PV cells, which cuts cell cost in genera ...
... these two objectives is to use light-trapping schemes. Light trapping allows cells to absorb sunlight using an active material layer that is much thinner than the material’s intrinsic absorption length. This effect then reduces the amount of materials used in PV cells, which cuts cell cost in genera ...
Superluminal and Slow Light Propagation in a Room
... However, all of these techniques for producing both fast and slow light require complicated experimental configurations and/or low temperatures. In contrast to these techniques, we recently used a different quantum effect—coherent population oscillations—to produce a group velocity of 58 m/s at room ...
... However, all of these techniques for producing both fast and slow light require complicated experimental configurations and/or low temperatures. In contrast to these techniques, we recently used a different quantum effect—coherent population oscillations—to produce a group velocity of 58 m/s at room ...
Non-linear Optical Microscopy and Spectroscopy for
... achieving high intensity without cranking up the laser to eleven1 is to use a pulsed laser. The output from this laser is a train of pulses where each pulse has a high power (kW), but the average power remains at a moderate value (mW). A continuous laser beam with an output power in the kW range wou ...
... achieving high intensity without cranking up the laser to eleven1 is to use a pulsed laser. The output from this laser is a train of pulses where each pulse has a high power (kW), but the average power remains at a moderate value (mW). A continuous laser beam with an output power in the kW range wou ...
4Pi Microscopy
... lenses for STED, the axial resolution was improved down to 30 to 50 nm (Dyba and Hell, 2002; Dyba et al., 2003). However, as STED is still in its infancy and, unlike I5M and 4Pi microscopy, relies on the specific properties of the dye, it is not surprising that the majority of recent 3D-imaging appl ...
... lenses for STED, the axial resolution was improved down to 30 to 50 nm (Dyba and Hell, 2002; Dyba et al., 2003). However, as STED is still in its infancy and, unlike I5M and 4Pi microscopy, relies on the specific properties of the dye, it is not surprising that the majority of recent 3D-imaging appl ...
A| ω - Enrico Rubiola
... Fig. 6. The Pound–Drever–Hall error signal, ' /2!P c P s vs $ /* + fsr , when the modulation frequency is low. The modulation frequency is about half a Carrier and PM #3 sidebands are in the resonance bandwidth linewidth: about 10 of a free spectral range, with a cavity finesse of 500. ...
... Fig. 6. The Pound–Drever–Hall error signal, ' /2!P c P s vs $ /* + fsr , when the modulation frequency is low. The modulation frequency is about half a Carrier and PM #3 sidebands are in the resonance bandwidth linewidth: about 10 of a free spectral range, with a cavity finesse of 500. ...
Selective plane illumination microscopy techniques in
... In vivo imaging can potentially capture quantitative data at singlecell resolution. When this imaging is performed noninvasively on intact, fully functioning organisms, time-lapse microscopy allows the study of development over time. Ultimately, one goal is to image and track every single cell in a ...
... In vivo imaging can potentially capture quantitative data at singlecell resolution. When this imaging is performed noninvasively on intact, fully functioning organisms, time-lapse microscopy allows the study of development over time. Ultimately, one goal is to image and track every single cell in a ...
Ultrafast adaptive optical near-field control
... as unknowns. The material properties are represented by a local, frequency-dependent dielectric function j共兲 for each homogeneous region j. Here we use the bulk 共兲 for gold and silver given from optical data.35 For the size of the nanostructures considered here, i.e., for particle sizes larger ...
... as unknowns. The material properties are represented by a local, frequency-dependent dielectric function j共兲 for each homogeneous region j. Here we use the bulk 共兲 for gold and silver given from optical data.35 For the size of the nanostructures considered here, i.e., for particle sizes larger ...
A Non-Contact Pulse Automatic Positioning Measurement System
... the pulse is the blood fluctuation phenomenon triggered by the aortic wall’s elastic relaxation and contraction caused by cardiac ejection. The tip of the artery experiences a similar wave-like fluctuation, also known as the pulse wave [1–4]. Cardiac ejection can cause different states of blood volu ...
... the pulse is the blood fluctuation phenomenon triggered by the aortic wall’s elastic relaxation and contraction caused by cardiac ejection. The tip of the artery experiences a similar wave-like fluctuation, also known as the pulse wave [1–4]. Cardiac ejection can cause different states of blood volu ...
A guide to super-resolution fluorescence microscopy
... molecular or even molecular levels (Table I). Some of these technologies have now matured from the breadboard stage to commercially available imaging systems, making them increasingly attractive for broad applications and defining a new state of the art. Conceptually, one can discern near-field from ...
... molecular or even molecular levels (Table I). Some of these technologies have now matured from the breadboard stage to commercially available imaging systems, making them increasingly attractive for broad applications and defining a new state of the art. Conceptually, one can discern near-field from ...
Simple 3-D characterization of ultrashort laser pulses
... Temporal and spatial distribution of ultrashort laser pulse energy is crucial information for applications such as the investigation of electrons dynamics [1], the coherent control of chemical reaction [2-4] or the phototherapy with femtosecond (10-15 s.) laser pulses [5]. The three most important p ...
... Temporal and spatial distribution of ultrashort laser pulse energy is crucial information for applications such as the investigation of electrons dynamics [1], the coherent control of chemical reaction [2-4] or the phototherapy with femtosecond (10-15 s.) laser pulses [5]. The three most important p ...
Nanosecond laser-induced breakdown in pure and - AS
... Figure 9: Regimes where SBS is expected to exist are shown as hatched areas for two laser pulse durations: 7.5 ns and 30 ns. ...
... Figure 9: Regimes where SBS is expected to exist are shown as hatched areas for two laser pulse durations: 7.5 ns and 30 ns. ...
Real-Time Multicolor DNA Detection with Chemoresponsive
... Identical gratings were exposed to 100 nM solutions of one or the other type of strand, and diffraction efficiencies were evaluated at several temperatures between 10 and 80 °C. Normalizing for initial signal magnitudes (Figure 5a), we found that increasing the cuvette temperature increases the rela ...
... Identical gratings were exposed to 100 nM solutions of one or the other type of strand, and diffraction efficiencies were evaluated at several temperatures between 10 and 80 °C. Normalizing for initial signal magnitudes (Figure 5a), we found that increasing the cuvette temperature increases the rela ...
Picosecond resolution soft x-ray laser plasma
... overcome this difficulty the diffraction gratings were designed to have two different, vertically separated, ruled sections on the same substrate. The section associated with alignment had a line spacing chosen to produce the same dispersion for a selected infrared (IR) laser diode as the dispersion ...
... overcome this difficulty the diffraction gratings were designed to have two different, vertically separated, ruled sections on the same substrate. The section associated with alignment had a line spacing chosen to produce the same dispersion for a selected infrared (IR) laser diode as the dispersion ...
AFM-IR
AFM-IR refers to atomic force microscope (AFM) based infrared (IR) spectroscopy. AFM-IR is a technique for chemical analysis of samples at nanoscale spatial resolution. AFM-IR is related to techniques including Tip-Enhanced Raman Spectroscopy (TERS) and scanning near-field optical microscopy (SNOM) and other methods of vibrational analysis with scanning probe microscopy. The AFM-IR technique uses a sharp tip of an AFM probe to measure the absorption of infrared light by a sample. Recording the amount of IR absorption as a function of wavelength or wavenumber creates nanoscale IR absorption spectra, which can be used to chemically characterize and even identify unknown materials. Recording the IR absorption as a function of position can be used to create chemical composition maps that show the spatial distribution of different chemical components. AFM-IR can overcome the diffraction limit that limits the spatial resolution of conventional infrared microscopy and microspectroscopy to the scale of several microns. AFM-IR can achieve spatial resolution down to around 20 nm, limited in some case only by the sharpness of the AFM probe tip and sensitivity down to the scale of molecular monolayers.