Abstract:
The present invention relates to a method for obtaining correlation between luminescence energy and photoabsorption by classifying the size and the shape of graphene quantum dots. The method controls luminescence and absorption characteristics by changing the size and the shape of the graphene quantum dots by analyzing correlation between luminescence energy and photoabsorption characteristics according to the size and the shape of the graphene quantum dots, by fabricating a graphene oxide sheet from graphite using a Hummers method and fabricating various sizes of graphene quantum dots (GQDs) by repetitive oxidation and reduction and thermal treatment in various compounds, and by fabricating quantum dots with uniform size and shape by filtering using a nano structure membrane. The method comprises: a graphene quantum dot size and shape classification step (S11); a luminescence energy acquisition step (S12) according to the size of the graphene quantum dots; a correlation acquisition step (S13) between the size of the graphene quantum dot and luminescence energy; an occupancy rate acquisition step (S14) of graphene quantum dot shape; and a correlation acquisition step (S15) between the size of graphene quantum dot and photoabsorption. The method of the present invention can increase applicability of not only an analog device but also a digital photoelectronic device by acquiring correlation between luminescence energy and photoabsorption by fabricating graphene quantum dots using a simple physical and a chemical method and classifying the size and the shape of the graphene quantum dots based on luminescence and absorption characteristics. [Reference numerals] (AA) START; (BB) End; (S11) Step of classifying size and shape of graphene quantum dots; (S12) Step of acquiring luminescence energy according to the size of graphene quantum dots; (S13) Step of acquiring correlation between the size of graphene quantum dots and luminescence energy; (S14) Step of acquiring occupancy rate of graphene quantum dot type; (S15) Step of acquiring correlation between the size of graphene quantum dots and photoabsorption
Abstract:
The lamp quality judgement appts. includes a discharge generator that imposes a high voltage across the bulb of a lamp in which gas and a filament coil of the lamp are sealed and causes producion of a discharge in which a light spectrum of wavelengths in a range of 550- 570 nm is radiated in said lamp. A light spectrum analyser processes the state of the light specturm radiated by the discharge. The repetition frequency of the discharge produced by the generator is made 1 kHz or less. The repetition frequency of the discharge is made that of a commercial line frequency eg. 50Hz. The discharge generator produces a high voltage with repeated quiescent periods.
Abstract:
A heat treatment device using a light source as a heat source performs accurate temperature measurement for a temperature band and an object which are difficult to measure the temperature with an existing temperature measuring method. A temperature measuring tool includes an illuminance monitor (50) measuring illuminance u from a light emitting element unit (30) and placed between a wafer (W) and the light emitting element unit (30), a temperature sensor (20a), and a calculating part (152) estimating the actual temperature P of the wafer (W) based on the simulation temperature Tc simulated by illuminance u and the temperature sensor (20a). The estimation of the actual temperature P of the wafer (W) in the calculating part (152) is performed on the basis of a previously calculated first correlation between the illuminance u and estimated temperature y of the wafer (W) estimated with the illuminance u and a previously calculated second correlation between the simulation temperature Tc simulated by the temperature sensor (20a) and the estimated temperature y of the wafer (W) estimated with the illuminance u.
Abstract:
본 발명은 상관 간섭 분광 장치가 샘플의 스펙트럼 특성을 검출하는 것을 기재하였으며, 장치는 광자로 샘플을 여기시키는 전자기 방사원과, 검출기에 광자의 도달 시간을 검출하도록 구성되고, 또한 다른 광자들의 도달 시간들 사이의 지연을 검출하도록 구성된 검출기로 구성된다. 상기 장치는 또한, 검출기에의 광자들의 도달 사이를 분석하도록 구성된 자기 상관기로 구성될 수 있다. 장치는 또한 다른 스펙트럼 검출 및 예를 들어 라만 분광 및 감쇠 전반사 분광과 같은 특성 시스템과 함께 사용될 수 있다. 본원에는 또한 상관 간섭 분광 장치를 통합한 방법, 시스템 및 키트가 제공된다.
Abstract:
PURPOSE: A digital auto-correlation spectroscope is provided to achieve improved sensitivity, while allowing for an observation for the high frequency wide band signal. CONSTITUTION: A digital auto-correlation spectroscope comprises an intermediate frequency to baseband converting unit(100) for converting a high frequency wideband signal into a baseband signal; a correlator unit(200) for converting an input signal into a digital signal, converting the digital signal into three-level data within the observed bandwidth, and obtaining an auto-correlation coefficient; a correlation control system(400) for inputting/outputting control signals for controlling the correlator unit and the intermediate frequency to baseband converting unit, and outputting data; an interface unit(300) for interface of the correlator unit to the correlation control system; and a communication interface unit(500) for communication with an external system control computer for controlling the digital auto-correlation spectroscope.
Abstract:
Es wird ein Verfahren zur Ermittlung eines Unkrautanteils in einem Betrachtungsabschnitt (10) eines Feldes (20) beschrieben. Eine Ist-Spektralinformation wird mit mindestens einem optischen Betrachtungsabschnitt-Sensor (12a, b) erfasst, der auf den Betrachtungsabschnitt (10) gerichtet ist. Ferner wird eine Referenz-Spektralinformation mittels eines optischen Referenzsensors (32) erfasst, der auf einen Referenzabschnitt (30) der gleichen Bodenfläche (22) gerichtet ist. Ein Unterschied zwischen der Ist-Spektralinformation und der Referenz-Spektralinformation wird ermittelt. Schließlich wird der Unterschied auf den Unkrautanteil mittels einer vorgegebenen Abbildung. Ferner wird eine Landtechnik-Steuereinrichtung (100) beschrieben, die zur Ausführung des Verfahrens geeignet ist.
Abstract:
Technologies for providing optical analysis systems using an integrated computational element with laterally-distributed spectral filters are described. A measurement tool contains an optical element including a substrate and a plurality of spectral filters supported by the substrate and arranged at different lateral positions with respect to a path of light to be received from a sample during operation of the measurement tool. Each spectral filter is formed to transmit or reflect a different subset of wavelengths in a wavelength range. Additionally, each spectral filter has a respective area exposed to the light from the sample, such that the respective areas are related to a property of the sample. The wavelength range can include wavelengths in a range from about 0.2μm to about 25μm. Additionally, the sample can include wellbore fluids and the property of the sample is a property of the wellbore fluids.
Abstract:
Fluid analysis systems with Integrated Computation Elements (ICEs) or other optical path components formed using atomic layer deposition (ALD) enables improved tolerances and design flexibility. In some of the disclosed embodiments, a fluid analysis system includes a light source and an ICE. The fluid analysis system also includes a detector that converts optical signals to electrical signals. The ICE comprises a plurality of optical layers, where at least one of the plurality of optical layers is formed using ALD. A related method includes selecting an ICE design having a plurality of optical layers. The method also includes forming at least one of the plurality of optical layers of the ICE using ALD to enable prediction of a chemical or physical property of a substance. A related logging string includes a logging tool section and a fluid analysis tool associated with the logging tool section.
Abstract:
A method of detecting a target gas includes the step of traversing a target area with a gas-filter correlation radiometer having a field of view oriented towards the target area. The gas-filter correlation radiometer receives reflected radiation in a passband from the target area and produces gas-filter correlation radiometer signals from the received reflected radiation. A surface reflectivity spectral profile of the target area is determined. The presence of the target gas in the target area is then determined based upon the received reflected radiation and the surface reflectivity spectral profile of the target area.