Novel high-temperature and pressure-compatible ultrasonic levitator
... pressure and the counteracting gravitational force, solid or liquid samples are levitated slightly below the pressure minima of the ultrasonic standing wave. The acoustic radiation pressure is much larger for the present standing wave produced within a resonant cavity than for a traveling wave. The ...
... pressure and the counteracting gravitational force, solid or liquid samples are levitated slightly below the pressure minima of the ultrasonic standing wave. The acoustic radiation pressure is much larger for the present standing wave produced within a resonant cavity than for a traveling wave. The ...
J. Phys. Chem. 1993,97, 2618
... (Figure 4). In protic solvents such as ethanol a unique, strong emission maximum at 510 nm was observed. This 510 nm emission, 1400 cm-l blue shifted with respect to the tautomer emission measured in n-heptane, does not fit the polarity dependent tautomer emission maxima, which all show a slight red ...
... (Figure 4). In protic solvents such as ethanol a unique, strong emission maximum at 510 nm was observed. This 510 nm emission, 1400 cm-l blue shifted with respect to the tautomer emission measured in n-heptane, does not fit the polarity dependent tautomer emission maxima, which all show a slight red ...
In Situ Soft X‑ray Absorption Spectroscopy Applied to Solid
... benzene oxidation on Pt(111) surface,16 water-gas shift reaction on CeOx/Au(111),17 and L2,3 edges of Co and Mn XAS observation of reduction behavior for Co/Mn/TiO2 catalysts under Fischer−Tropsch synthesis.18 However, those targets are only either gas phase substrates or solid catalysts, and the co ...
... benzene oxidation on Pt(111) surface,16 water-gas shift reaction on CeOx/Au(111),17 and L2,3 edges of Co and Mn XAS observation of reduction behavior for Co/Mn/TiO2 catalysts under Fischer−Tropsch synthesis.18 However, those targets are only either gas phase substrates or solid catalysts, and the co ...
Absolute Specular Reflectance Measurements at Fixed
... The VN design offers several advantages over other absolute specular reflectance devices as well. Unlike the expensive variable angle accessories, the PELA 6000 series offers measurement capability at key beam angles, which are available alone or in combination with other angles. The VN accessories ...
... The VN design offers several advantages over other absolute specular reflectance devices as well. Unlike the expensive variable angle accessories, the PELA 6000 series offers measurement capability at key beam angles, which are available alone or in combination with other angles. The VN accessories ...
Chapter two_part B
... characteristic of multimode fiber only can be minimized by: ▪ using a smaller core diameter ▪ using graded-index fiber ▪ use single-mode fiber - single-mode fiber is only single-mode at wavelengths greater than the cutoff wavelength When multimode dispersion is present, it usually dominates to ...
... characteristic of multimode fiber only can be minimized by: ▪ using a smaller core diameter ▪ using graded-index fiber ▪ use single-mode fiber - single-mode fiber is only single-mode at wavelengths greater than the cutoff wavelength When multimode dispersion is present, it usually dominates to ...
Noise-equivalent sensitivity of photoacoustics
... light intensity. So in the sense of energy conversion, the photoacoustic effect is nonlinear. Pushing the sensitivity of photoacoustics then logically requires the use of high optical intensity; however, as in any optical excitation technique, photoacoustic generation exhibits nonlinearity in anothe ...
... light intensity. So in the sense of energy conversion, the photoacoustic effect is nonlinear. Pushing the sensitivity of photoacoustics then logically requires the use of high optical intensity; however, as in any optical excitation technique, photoacoustic generation exhibits nonlinearity in anothe ...
Classical Radiation Processes in the Weizsäcker
... Synchrotron radiation, undulator radiation, transition radiation, and Čerenkov radiation are examples of processes which can be described within the context of classical electromagnetism, but for which the Weizsäcker-Williams approximation is also suitable. Čerenkov radiation and transition radia ...
... Synchrotron radiation, undulator radiation, transition radiation, and Čerenkov radiation are examples of processes which can be described within the context of classical electromagnetism, but for which the Weizsäcker-Williams approximation is also suitable. Čerenkov radiation and transition radia ...
(k) and Refractive Index
... Baseline and the 0%T/Blocked Beam Baseline are checked, but the option Use internal attenuator is left unchecked, as shown in Figure 4. Using this setup, when the correction prompt is given “Block the beam and press OK to perform a 0%T/Blocked Beam correction” the user will not actually block the be ...
... Baseline and the 0%T/Blocked Beam Baseline are checked, but the option Use internal attenuator is left unchecked, as shown in Figure 4. Using this setup, when the correction prompt is given “Block the beam and press OK to perform a 0%T/Blocked Beam correction” the user will not actually block the be ...
2.7 Optical Fiber Attenuation
... characteristic of multimode fiber only can be minimized by: ▪ using a smaller core diameter ▪ using graded-index fiber ▪ use single-mode fiber - single-mode fiber is only single-mode at wavelengths greater than the cutoff wavelength When multimode dispersion is present, it usually dominates to ...
... characteristic of multimode fiber only can be minimized by: ▪ using a smaller core diameter ▪ using graded-index fiber ▪ use single-mode fiber - single-mode fiber is only single-mode at wavelengths greater than the cutoff wavelength When multimode dispersion is present, it usually dominates to ...
CH332 Lab 4: FLUORESCENCE LIFETIME OF QUININE SULFATE
... Please note that we will be using the Quanta Master Instrument from PTI with a pulsed nano-LED as an excitation source instead of a laser. ...
... Please note that we will be using the Quanta Master Instrument from PTI with a pulsed nano-LED as an excitation source instead of a laser. ...
Reactions between dyes of the Alizarin Green series and vanadates
... (chelate-forming configuration of the phenolic and carbonyl group). The difference in composition of the complexes VL2S4 (I) and VL2S6 (II, III) may be explained by the fact that dyes II and III possess one surplus sulfo group with respect to dye I, on which the tenside can be bonded. Similar result ...
... (chelate-forming configuration of the phenolic and carbonyl group). The difference in composition of the complexes VL2S4 (I) and VL2S6 (II, III) may be explained by the fact that dyes II and III possess one surplus sulfo group with respect to dye I, on which the tenside can be bonded. Similar result ...
Absorption-induced trapping in an anisotropic
... contours of constant magnetic field in the x − y-plane. Also, Fig. 1(b) shows that the quadrupolar nature of the field (and, therefore, the field gradient) is oriented along lines that are at 45 ◦ to the x- and y-axes. This direction coincides with the trapping beam orientation. The μ -metal cores ( ...
... contours of constant magnetic field in the x − y-plane. Also, Fig. 1(b) shows that the quadrupolar nature of the field (and, therefore, the field gradient) is oriented along lines that are at 45 ◦ to the x- and y-axes. This direction coincides with the trapping beam orientation. The μ -metal cores ( ...
Laser Chemosensor with Rapid Responsivity and Inherent Memory
... at risk of being targeted by terrorists. These devices could also be employed for detecting landmines. A range of optical spectrometric and chemical analytical methods have been investigated for this application [1]. Detection limits at the femtogram level, or a few parts per billion (ppb) by volume ...
... at risk of being targeted by terrorists. These devices could also be employed for detecting landmines. A range of optical spectrometric and chemical analytical methods have been investigated for this application [1]. Detection limits at the femtogram level, or a few parts per billion (ppb) by volume ...
Development of a New Optical Wavelength Rejection Filter
... Index Headings: Instrumentation, emission spectroscopy; Filters; Ar + lasers; Light scattering; Optics; Reflectance; Raman spectroscopy; Techniques, spectroscopic; Visible UV spectroscopy; X-ray diffraction. ...
... Index Headings: Instrumentation, emission spectroscopy; Filters; Ar + lasers; Light scattering; Optics; Reflectance; Raman spectroscopy; Techniques, spectroscopic; Visible UV spectroscopy; X-ray diffraction. ...
1 CHAPTER 10 LINE PROFILES 10.1 Introduction. Spectrum lines
... from digitally-recorded spectra almost instantaneously, there may be occasions where low-resolution spectra do not allow this, and all that can be honestly measured are the central depths and equivalent widths. The type of profile, and hence the value to be used for the constant in equation 10.2.14, ...
... from digitally-recorded spectra almost instantaneously, there may be occasions where low-resolution spectra do not allow this, and all that can be honestly measured are the central depths and equivalent widths. The type of profile, and hence the value to be used for the constant in equation 10.2.14, ...
Intro to Titrimetry
... Precipitation Titration – forms insoluble salts which also serves as a monitor of reaction completion. Ex: Volhard Methods and Fajans Method RedOx Titrations – involves species which undergo redox reactions. The reaction is monitored by RedOx indicators or ...
... Precipitation Titration – forms insoluble salts which also serves as a monitor of reaction completion. Ex: Volhard Methods and Fajans Method RedOx Titrations – involves species which undergo redox reactions. The reaction is monitored by RedOx indicators or ...
TDLS98AbBook
... In the mid infrared spectral region between 3 and 30 µm the majority of atmospheric relevant gases have pronounced rotational-vibrational absorption lines. Prerequisite for the use of these transitions for trace gas detection is the precise knowledge of line parameters like position, intensity, broa ...
... In the mid infrared spectral region between 3 and 30 µm the majority of atmospheric relevant gases have pronounced rotational-vibrational absorption lines. Prerequisite for the use of these transitions for trace gas detection is the precise knowledge of line parameters like position, intensity, broa ...
A study on the optical property-Determination of
... factors i) Coulombic spectral overlap integral ii) The position of the absorption spectrum of the nanoparticle (surface plasmon frequency) and iii) Width of the absorption spectrum (inverse of plasmon life time). However, for a given metal NP, the plasmonic absorption band that normally lies in the ...
... factors i) Coulombic spectral overlap integral ii) The position of the absorption spectrum of the nanoparticle (surface plasmon frequency) and iii) Width of the absorption spectrum (inverse of plasmon life time). However, for a given metal NP, the plasmonic absorption band that normally lies in the ...
Mendes, M. J., et al., Design of optimized wave
... highly promising for application in the front surface of thin film cells [1,28,29] as those considered here composed of amorphous (a-Si:H) or crystalline silicon (c-Si) absorber materials. Carefullyengineered front structures, composed of non-absorbing elements (e.g. dielectric particles), provide an ...
... highly promising for application in the front surface of thin film cells [1,28,29] as those considered here composed of amorphous (a-Si:H) or crystalline silicon (c-Si) absorber materials. Carefullyengineered front structures, composed of non-absorbing elements (e.g. dielectric particles), provide an ...
The Study of pH Influence on Bovine Liver Catalase by Means of UV
... main parameter, giving information about spin labels located in molecule is correlation time Wc [7]. According to expectation the highest correlation time value is obtained when pH 7 (Wc = 3.51*10-10). However, the change of pH both toward acidic and alkaline environment causes decrease of correlati ...
... main parameter, giving information about spin labels located in molecule is correlation time Wc [7]. According to expectation the highest correlation time value is obtained when pH 7 (Wc = 3.51*10-10). However, the change of pH both toward acidic and alkaline environment causes decrease of correlati ...
Development of a Photocatalytic Wet Scrubbing - soil
... solid surface of TiO2 particles and oxidized under UV illumination in the aqueous phase. Experiments were conducted under different reaction conditions of CH3SH loading, TiO2 dosage, and pH. The reaction kinetics of CH3SH reduction indicates that the pH of the reaction solution greatly influences th ...
... solid surface of TiO2 particles and oxidized under UV illumination in the aqueous phase. Experiments were conducted under different reaction conditions of CH3SH loading, TiO2 dosage, and pH. The reaction kinetics of CH3SH reduction indicates that the pH of the reaction solution greatly influences th ...
Stramski, Dariusz, Marcel Babin, and Slawomir B. Wozniak
... upper water column (Lerman et al. 1977), and their presence in marine environments results from terrestrial runoff, coastal erosion, and deposition of atmospheric dust (e.g., Carder et al. 1986; Beusen et al. 2005). We note that there can also be anthropogenic contributions to this category of parti ...
... upper water column (Lerman et al. 1977), and their presence in marine environments results from terrestrial runoff, coastal erosion, and deposition of atmospheric dust (e.g., Carder et al. 1986; Beusen et al. 2005). We note that there can also be anthropogenic contributions to this category of parti ...
Optical Properties of Lithium - Zinc – Boro- MolybdateGlass
... Electronic polarizability of an ion is related to properties of the material such as refraction, conductivity, optical nonlinearity along with optical basicity and is of significant interest in the study on polarization state of ions in crystalline and amorphous materials [VesselinDimitrov[15]. The ...
... Electronic polarizability of an ion is related to properties of the material such as refraction, conductivity, optical nonlinearity along with optical basicity and is of significant interest in the study on polarization state of ions in crystalline and amorphous materials [VesselinDimitrov[15]. The ...
Doppler-Free Spectroscopy MIT Department of Physics
... helps because it delays the atom’s return to the original state. The probability for such decay per unit time is Γ = τ1 . Since τ is 28 nsec for the 52 P3/2 state of Rb, the spontaneous decay rate here is Γ = 0.36 × 108 sec−1 . Suppose that the laser frequency ν exceeds the resonant frequency ν0 . I ...
... helps because it delays the atom’s return to the original state. The probability for such decay per unit time is Γ = τ1 . Since τ is 28 nsec for the 52 P3/2 state of Rb, the spontaneous decay rate here is Γ = 0.36 × 108 sec−1 . Suppose that the laser frequency ν exceeds the resonant frequency ν0 . I ...
Detection of Organic Pollutants with a Pulsed Ion Mobility
... The set up has been described in previous publications [4-6] so that here only a general overview will be given. A typical IMS device consists of a tube of ca. 8 cm length with three distinct sections, each having its own electric field. The first section, normally 3 mm wide, is called reaction regi ...
... The set up has been described in previous publications [4-6] so that here only a general overview will be given. A typical IMS device consists of a tube of ca. 8 cm length with three distinct sections, each having its own electric field. The first section, normally 3 mm wide, is called reaction regi ...
Atomic absorption spectroscopy
Atomic absorption spectroscopy (AAS) is a spectroanalytical procedure for the quantitative determination of chemical elements using the absorption of optical radiation (light) by free atoms in the gaseous state.In analytical chemistry the technique is used for determining the concentration of a particular element (the analyte) in a sample to be analyzed. AAS can be used to determine over 70 different elements in solution or directly in solid samples used in pharmacology, biophysics and toxicology research.Atomic absorption spectroscopy was first used as an analytical technique, and the underlying principles were established in the second half of the 19th century by Robert Wilhelm Bunsen and Gustav Robert Kirchhoff, both professors at the University of Heidelberg, Germany.The modern form of AAS was largely developed during the 1950s by a team of Australian chemists. They were led by Sir Alan Walsh at the Commonwealth Scientific and Industrial Research Organisation (CSIRO), Division of Chemical Physics, in Melbourne, Australia.Atomic absorption spectrometry has many uses in different areas of chemistry such as: Clinical analysis: Analyzing metals in biological fluids and tissues such as whole blood, plasma, urine, saliva, brain tissue, liver, muscle tissue, semen Pharmaceuticals: In some pharmaceutical manufacturing processes, minute quantities of a catalyst that remain in the final drug product Water analysis: Analyzing water for its metal content.↑ ↑ ↑