supporting material
... number of photons within the ROI near the center of the bead) in each image was less than 1,000 photons. The size of the ROI used to measure signal was selected so that it was large enough to accurately sample the signal yet small enough to minimize changes in intensity due to the spherical geometry ...
... number of photons within the ROI near the center of the bead) in each image was less than 1,000 photons. The size of the ROI used to measure signal was selected so that it was large enough to accurately sample the signal yet small enough to minimize changes in intensity due to the spherical geometry ...
幻灯片 1
... 1. i) Calculate the exciton Rydberg and Bohr radius for GaAs, which has r =12.8, me* = 0.067 m0 and mh*=0.2m0. ii) GaAs has a cubic crystal structure with a unit cell size of 0.56 nm. Estimate the number of unit cells contained within the orbit of the n=1 exciton. Hence justify the validity of assu ...
... 1. i) Calculate the exciton Rydberg and Bohr radius for GaAs, which has r =12.8, me* = 0.067 m0 and mh*=0.2m0. ii) GaAs has a cubic crystal structure with a unit cell size of 0.56 nm. Estimate the number of unit cells contained within the orbit of the n=1 exciton. Hence justify the validity of assu ...
Frenkel excitons
... 1. i) Calculate the exciton Rydberg and Bohr radius for GaAs, which has r =12.8, me* = 0.067 m0 and mh*=0.2m0. ii) GaAs has a cubic crystal structure with a unit cell size of 0.56 nm. Estimate the number of unit cells contained within the orbit of the n=1 exciton. Hence justify the validity of assu ...
... 1. i) Calculate the exciton Rydberg and Bohr radius for GaAs, which has r =12.8, me* = 0.067 m0 and mh*=0.2m0. ii) GaAs has a cubic crystal structure with a unit cell size of 0.56 nm. Estimate the number of unit cells contained within the orbit of the n=1 exciton. Hence justify the validity of assu ...
reflectance measurement and modelling of high reflectivity
... Distributed Bragg Reflector (DBR) is becoming an important component in optoelectronic devices particularly the quarter-wave semiconductor DBR because of its ease of monolithic integration, hence eliminating the requirement for post-growth processing and simplifying the design. The nature of the int ...
... Distributed Bragg Reflector (DBR) is becoming an important component in optoelectronic devices particularly the quarter-wave semiconductor DBR because of its ease of monolithic integration, hence eliminating the requirement for post-growth processing and simplifying the design. The nature of the int ...
High-resolution laser spectroscopy and Zeeman effect of nitrate radical
... The nitrate radical (NO3) is one of the important intermediate species in various chemical reactions involving nitrogen oxides and ozone [1]. In the ancient time the NO3 was identified by a significant visible absorption, and this absorption system is now well known to correspond to an optically all ...
... The nitrate radical (NO3) is one of the important intermediate species in various chemical reactions involving nitrogen oxides and ozone [1]. In the ancient time the NO3 was identified by a significant visible absorption, and this absorption system is now well known to correspond to an optically all ...
Corrosion Inhibition of Mild Steel by Benzopyranone Derivative in
... on corrosion inhibition of mild steel in 1.0 M HCl solutions have been studied by weight loss measurement, electrochemical impedance spectroscopy (EIS), Tafel polarization technique and scanning electron microscope (SEM). According to all the experimental results, the inhibition efficiency increases ...
... on corrosion inhibition of mild steel in 1.0 M HCl solutions have been studied by weight loss measurement, electrochemical impedance spectroscopy (EIS), Tafel polarization technique and scanning electron microscope (SEM). According to all the experimental results, the inhibition efficiency increases ...
Wideband microwave measurements of the extinction cross section
... section (RCS) in the forward direction is therefore developed in order to verify the theoretical work. The optical theorem is used to calculate the extinction cross section from the measured forward RCS for arbitrary polarization of the incident radiation. The method described in this paper can be a ...
... section (RCS) in the forward direction is therefore developed in order to verify the theoretical work. The optical theorem is used to calculate the extinction cross section from the measured forward RCS for arbitrary polarization of the incident radiation. The method described in this paper can be a ...
Fourier domain optical coherence tomography with an
... Optical coherence tomography (OCT) is a highly sensitive biomedical imaging technique that enables high resolution, cross-sectional imaging in biological tissues and other turbid materials. High axial resolution of OCT is realized by use of a broadband light source whereas the lateral resolution is ...
... Optical coherence tomography (OCT) is a highly sensitive biomedical imaging technique that enables high resolution, cross-sectional imaging in biological tissues and other turbid materials. High axial resolution of OCT is realized by use of a broadband light source whereas the lateral resolution is ...
Detection of Fluorescence from Single Molecules
... molecules with laser light and detects the resulting emission with single fluorophore resolution. The system is based around a commercial inverted microscope, though the excitation laser and the detector are both external to the microscope. To achieve the extremely high signal-to-noise ratio require ...
... molecules with laser light and detects the resulting emission with single fluorophore resolution. The system is based around a commercial inverted microscope, though the excitation laser and the detector are both external to the microscope. To achieve the extremely high signal-to-noise ratio require ...
Exp. 71 - Caltech
... reflects off the first mirror surface (which after all does have a high reflectivity). If the input is equal to ν m , however, then light leaking out from inside the cavity destructively interferes with the reflected beam. Right after turning on the input beam, the power inside the cavity builds up until ...
... reflects off the first mirror surface (which after all does have a high reflectivity). If the input is equal to ν m , however, then light leaking out from inside the cavity destructively interferes with the reflected beam. Right after turning on the input beam, the power inside the cavity builds up until ...
Lens Aberrations and Ray Tracing 1 Background
... Where would spherical aberrations be an issue? Many times an experiment will require a wellcollimated beam or focusing as much energy as possible into a point, situations that mandate minimal spherical aberrations. Which lens should be used? Bi-convex or plano convex — and in the latter case, which ...
... Where would spherical aberrations be an issue? Many times an experiment will require a wellcollimated beam or focusing as much energy as possible into a point, situations that mandate minimal spherical aberrations. Which lens should be used? Bi-convex or plano convex — and in the latter case, which ...
Ultraviolet–visible spectroscopy
Ultraviolet–visible spectroscopy or ultraviolet-visible spectrophotometry (UV-Vis or UV/Vis) refers to absorption spectroscopy or reflectance spectroscopy in the ultraviolet-visible spectral region. This means it uses light in the visible and adjacent (near-UV and near-infrared [NIR]) ranges. The absorption or reflectance in the visible range directly affects the perceived color of the chemicals involved. In this region of the electromagnetic spectrum, molecules undergo electronic transitions. This technique is complementary to fluorescence spectroscopy, in that fluorescence deals with transitions from the excited state to the ground state, while absorption measures transitions from the ground state to the excited state.