Abstract:
A device for generating a homogeneous flux of hot electrons in an aqueous solution comprises a cathode electrode (52) and first and second control electrodes (53, 54) on a substrate (51) surface, an anode electrode (57), a resistive barrier layer (55) on the cathode electrode, an isolation layer (61) between the control electrodes and the anode electrode, and an aqueous sensing layer (56) above the barrier layer, all said electrodes being connected to electronic circuitry, the control electrodes creating a lateral electro-static field and the anode electrode creating a vertical electro-magnetic field across the barrier layer, wherein hot electrons are generated by electric cathodic pulses, the hot electrons gain kinetic energy by moving laterally in the lateral electrostatic-field, and the lateral movement is changed to a vertical movement by cathodic voltage pulses providing change of lateral momentum of an electron to vertical momentum, whereby hot electrons with sufficient energy tunnel the barrier layer.
Abstract:
A portable device for detecting an analyte associated with a target organic molecule in a liquid and/or solid substance. The device includes a test chamber, a probe, and a sensor. The test chamber contains a liquid volume of test solution including an analytical reagent selected to react with the analyte. The test chamber is sealed by a pierceable membrane wall. The probe is removably positionable to pierce the membrane wall to deposit a sample in the test chamber to form a test mixture with the test solution. The sensor is positioned to detect one or more characteristics of the test mixture in the test chamber indicative of a reaction between the analyte and the analytical reagent.
Abstract:
An electrochemical flow cell is described which includes a flow passage extending between the inlet and outlet to define a flow path for fluid to flow through the cell body as fully developed laminar flow. A number of flow-through electrodes are disposed within the flow passage. The flow-through electrodes are arranged in serial flow succession within the flow passage and have a plurality of apertures therein through which the fluid passes. The working electrode is positioned within the flow passage at a predetermined distance downstream of the inlet of the cell body which corresponds to a streamwise location at which substantially fully developed laminar flow occurs. At least the working electrode of the flow cell may comprise an ultramicroelectrode that is manufactured as described herein. However, this ultramicroelectrode, whether single or multicore, may also be used for applications other than the described flow cell.
Abstract:
A method of detecting conversion quality includes the steps of providing an article having a green material and a semiconductor material, processing the green material and the semiconductor material to produce a matrix composite, and detecting a matrix composite conversion quality with the semiconductor material.
Abstract:
Le dispositif photovoltaïque comprend une cellule photovoltaïque (1 ) assemblée à un substrat (2) par l'intermédiaire d'une interface d'assemblage. Le procédé comprend une étape d'injection d'un courant électrique à travers la cellule photovoltaïque et une étape d'acquisition d'un signal de mesure de radiations lumineuses émises par la cellule photovoltaïque (1 ), par électroluminescence, en réponse au courant injecté. Le courant d'injection a une densité supérieure à un seuil de courant prédéfini de détection de défauts d'assemblage. Il est prévu une étape de détection d'au moins un défaut dans l'interface d'assemblage à partir dudit signal de mesure acquis.
Abstract:
Die Erfindung betrifft ein Verfahren zur Bestimmung von Materialparametern, insbesondere der Ladungsträgerlebensdauer eines Haibleitersubstrates durch Messung von Lumineszenzstrahlung, folgende Verfahrensschritte umfassend: a. Anregen des Halbleitersubstrats zum Erzeugen von Lumineszenzstrahlung durch injizieren von Ladungsträgern in dem Halbleitersubstrat, wobei der zeitliche Verlauf der Anregungsintensität l A (t) periodisch moduliert ist; b. Zeitaufgelöstes Messen der Intensität der von einem Messbereich des Haibleitersubstrates ausgehenden Lumineszenzstrahlung, wobei zumindest der relative zeitliche Verlauf der Lumineszenzstrahlung Ø(t) zumindest während einer Anregungsperiode gemessen wird; c. Bestimmen mindestens eines Materialparameters des Haibleitersubstrates abhängig von dem zeitlichen Verlauf der Anregungsintensität l A (t) und dem zeitlichen Verlauf der Intensität der Lumineszenzstrahlung ∅(t) ; Die Erfindung ist dadurch gekennzeichnet, dass in Verfahrensschritt A eine Strom-Spannungsquelle elektrisch leitend mit dem Halbleitersubstrat verbunden wird und mittels der Strom-Spannungsquelle das Anregen mittels Beaufschlagen des Haibleitersubstrates mit zeitlich modulierter elektrischer Spannung erfolgt.
Abstract:
Devices are described for providing quantitative information relating to a sample. Example devices include a flexible substrate, a sample receiver at least partially formed in or disposed on the flexible substrate, electronic circuitry and at least one indicator electrically coupled to the electronic circuitry. The flexible substrate includes at least one paper-based portion, at least one elastomeric portion, or at least one plastic portion. The electronic circuitry and the at least one indicator are at least partially formed in or disposed on the flexible substrate. The electronic circuitry generates an analysis result based on an output signal from the sample or a derivative of the sample. The at least one indicator provides an indication of the quantitative information relating to the sample based at least in part on the at least one analysis result.
Abstract:
In embodiments disclosed herein, a diagnostic system is provided having a cartridge comprising at least one needle; at least one reservoir; at least one fluidic seal; and at least one fluidic channel of a fluidic pathway, wherein the cartridge is configured to store at least one reagent and at least one waste material on the cartridge. The diagnostic system is provided also having a diagnostic instrument comprising the fluidic pathway; an electrochemiluminescence (ECL) detection system; and a pump, wherein the fluidic pathway begins and ends in the cartridge and has a substantially single direction of flow in a pathway fluidically connecting the diagnostic instrument and the cartridge.
Abstract:
본 발명에 따른 위조 및 변조 방지 장치는, 인가되는 자기장이 변화하면 반사광 또는 투과광이 변화되는 자기 가변 물질을 포함하는 자기 가변 물질 포함부, 자기 가변 물질에 대하여 인가될 수 있는 자기장을 발생시키는 자기장 발생부, 및 외부 자극이 가해지는 것에 대응하여 자기 가변 물질에 대하여 인가되는 자기장의 세기, 방향 및 패턴 중 적어도 하나를 변화시킴으로써, 자기 가변 물질의 표시 상태를 변화시키는 기능을 수행하는 가동부를 포함하는 것을 특징으로 한다.
Abstract:
The present invention relates to a method for quantitating an analyte having a wide range concentration in a single assay without having to dilute the sample and repeating the assay. The key feature of the invention is having two cycles of events including sample binding to probe, binding reactions, and detection. After the first cycle of binding and detecting, the probe is dipped into the same sample vessel to bind additional analyte in the sample vessel at a condition that is more favorable to binding than the condition in the first cycle.