摘要:
Embodiments described herein provide micro-fluidic systems and devices for use in performing various diagnostic and analytical tests. According to one embodiment, the micro-fluidic device includes a sample chamber for receiving a sample, and a reaction chamber for performing a chemical reaction. A bubble jet pump is structured on the device to control delivery of a fluid from the sample chamber to the reaction chamber. The pump is fluidically coupled to one or more chambers of the device using a fluidic channel such as a capillary. A valve may be coupled to one or more chambers to control flow into and out of those chambers. Also, a sensor may be positioned in one or more of the chambers, such as the reactant chamber, for sensing a property of the fluid within the chamber as well as the presence of a chemical within the chamber.
摘要:
A method of controlling the temperature of autothermal microchannel reactors is disclosed. A hierarchical control structure employs a distributed temperature controller including a phase change material and a supervisory control system including the control of one or more inputs into the reactor. The phase change material acts as a fast, distributed controller, and the supervisory controller acts over a longer time horizon to mitigate persistent disturbances. A stochastic optimization method for selecting the phase change layer thickness is employed.
摘要:
The present invention relates to a method for conducting deracemization using Taylor flow and a device for conducting the same. With respect to the deracemization of a racemate, it may be efficiently conducted with improved rapidity when a racemate-containing fluid is placed under Taylor flow.
摘要:
Apparatuses and methods for synthesizing nanoscale materials are provided, including semiconductor nanowires. Precursor solutions include mixed reagent precursor solutions of metal and chalcogenide precursors and a catalyst, where such solutions are liquid at room temperature. The precursor solutions are mixed by dividing a solution flow into multiple paths and converging the paths to form a uniform solution. A thermally controlled reactor receives the uniform solution to form semiconductor nanowires. Various electronic, optical, and sensory devices may employ the semiconductor nanowires described herein, for example.
摘要:
A reactor and a reaction method are provided with which temperature changes due to a large amount of reaction heat generated immediately after confluence of raw material fluids can be suppressed. A reactor (2) includes reaction passages (22) and temperature control passages (42). Each reaction passage (22) includes first and second supply passage parts (24, 26), a confluence part (30), and a reaction passage part (28) connected in this order from upstream to downstream. Each temperature control passage (42) includes: first temperature control passage parts (44) extending at least along a particular range of the corresponding reaction passage part (28); and a second temperature control passage part (46) connected thereto, which is fewer in number than the first temperature control passage parts (44). Each second temperature control passage part (46) has a cross section area larger than that of each first temperature control passage part (44).
摘要:
A microfluidic chip includes a plurality of reagent sources for a feeding a plurality of reagents, each reagent source feeding a corresponding reagent among the plurality of reagents. A macro-chamber receives one or more reagents among the plurality of reagents from the plurality of reagent sources. A microfluidic reactor is coupled to the macro-chamber and the plurality of reagent sources and configured to receive two or more reagents among the plurality of reagents from at least one of the macro-chamber, the plurality of reagent sources, and react the two or more reagents to generate a reaction content.
摘要:
The method according to the invention includes choosing a reaction presumed reaction mechanism; selecting, for said mechanism, at least one first function characteristic of a thermokinetic property that is invariant with the periodic variation frequency of a control parameter influencing said reaction, the first characteristic function being calculated at least from first-order oscillation amplitudes of the concentration of at least one of the species involved in said reaction. The method includes calculating a plurality of values of the first characteristic function from first-order oscillation amplitudes obtained experimentally and analyzing the calculated values of the first characteristic function to determine whether the first characteristic function is constant based on the calculated values, and if the first characteristic function is constant, assigning the presumed mechanism to said reaction.
摘要:
A microfluidic system comprising a plurality of photochemical reaction stages, the microfluidic system comprising a computational processor, a plurality of electrically-controllable photochemical reaction stages, and a series of controllable interconnections for connecting the photochemical reaction stages. In an implementation, the computational processor controls the electrically-controllable photochemical and other chemical reaction stages together with controllable interconnections so as to implement multi-step chemical processes. The microfluidic system can be configured to selectively drive a plurality of photochemical reactions within a mixture of chemical compounds via controlled emission of light of a plurality of wavelengths. The microfluidic system can be configured to comprise various interconnections and combinations of parallel and series chemical reaction stages, and can include a multichannel microfluidic chemical transfer bus. The microfluidic system can be configured to handle and process liquid, gasses, solids, and mixtures of these, and can used to implement anion relay chemistry, combinational chemistry, and synthon-based synthesis.
摘要:
Embodiments described herein provide micro-fluidic systems and devices for use in performing various diagnostic and analytical tests. According to one embodiment, the micro-fluidic device includes a sample chamber for receiving a sample, and a reaction chamber for performing a chemical reaction. A bubble jet pump is structured on the device to control delivery of a fluid from the sample chamber to the reaction chamber. The pump is fluidically coupled to one or more chambers of the device using a fluidic channel such as a capillary. A valve may be coupled to one or more chambers to control flow into and out of those chambers. Also, a sensor may be positioned in one or more of the chambers, such as the reactant chamber, for sensing a property of the fluid within the chamber as well as the presence of a chemical within the chamber.
摘要:
Embodiments described herein provide micro-fluidic systems and devices for use in performing various diagnostic and analytical tests. According to one embodiment, the micro-fluidic device includes a sample chamber for receiving a sample, and a reaction chamber for performing a chemical reaction. A bubble jet pump is structured on the device to control delivery of a fluid from the sample chamber to the reaction chamber. The pump is fluidically coupled to one or more chambers of the device using a fluidic channel such as a capillary. A valve may be coupled to one or more chambers to control flow into and out of those chambers. Also, a sensor may be positioned in one or more of the chambers, such as the reactant chamber, for sensing a property of the fluid within the chamber as well as the presence of a chemical within the chamber.