Abstract:
Pre-screened libraries, such as pre-screened chemical composition libraries useful for drug screening, are generated using target independent assays. The methods typically involve screening of master libraries in microfluidic devices for effects that are correlated to one or more target independent parameter. Also included are multi-module workstations, such as microfluidic workstations,and integrated systems, for performing target independent assays.
Abstract:
Analytical systems and methods that use a modular interface structure (600) for providing an interface between a sample substrate (630) and an analytical unit (610) where the analytical unit (610) has a particular interface arrangement for implementing various analytical and control functions. Using a number of variants for each module of the modular interface structure (600) advantageously provides cost effective and efficient ways to perform numerous tests using a particular substrate or class of substrates with a particular analytical and control systems interface arrangement. Improved optical illumination and detection system for simultaneously analyzing reactions or conditions in multiple parallel microchannels (622) are also provided.
Abstract:
Systems and method of sampling compounds into a microfluidic channel, comprising: providing a plurality of different compounds reversibly immobilized on a first surface of substrate; providing a capillary element having a capillary channel disposed therethrough, the capillary element having at least one open end, and a volume of solubilizing fluid present at the open end of the capillary element; moving the solubilizing fluid at the open end of the capillary element into contact with a fist compound on the surface of the substrate; sensing when the solubilizing fluid contacts the surface of the substrate, the solubilizing fluid dissolving at least a portion of the first compound; and drawing at least a portion of the dissolved first compound into the capillary element.
Abstract:
Methods, apparatus and systems are provided for introducing large numbers of different materials into a microfluidic analytical device rapidly, efficiently and reproducibly. In particular, improved integrated pipettor chip configurations, e.g. sippers or electropipettors, are described which are capable of sampling extremely small amounts of material for which analysis is desired, transporting material into a microfluidic analytical channel network, and performing the desired analysis on the material.
Abstract:
Methods and systems for designing optimized fluidic channel networks for performing different analytical operations, which include the steps of selecting a driving force, identifying at least a first reaction parameter, and designing the channel network by determining channel lengths and cross-sectional dimensions that are optimized for the reaction requirements in view of the selected driving force. Preferred methods are used to design integrated microscale fluidic systems.
Abstract:
Electrokinetic devices having a computer for correcting for electrokinetic effects are provided. Methods of correcting for electrokinetic effects by establishing the velocity of reactants and products in a reaction in electrokinetic microfluidic devices are also provided. These microfluidic devices can have substrates with channels, depressions, and/or wells for moving, mixing and monitoring precise amounts of analyte fluids.
Abstract:
Analytical systems and methods that use a modular interface structure (600) for providing an interface between a sample substrate (630) and an analytical unit (610) where the analytical unit (610) has a particular interface arrangement for implementing various analytical and control functions. Using a number of variants for each module of the modular interface structure (600) advantageously provides cost effective and efficient ways to perform numerous tests using a particular substrate or class of substrates with a particular analytical and control systems interface arrangement. Improved optical illumination and detection system for simultaneously analyzing reactions or conditions in multiple parallel microchannels (622) are also provided.
Abstract:
The present invention generally provides microfluidic devices (200) and systems that utilize electrokinetic material transport systems to selectively control and direct the transport of materials through and among complex arrangements of integrated microscale channels (for example, 202 and 208 + 2n, where n = 0, 1, ...8) disposed within integrated body structures.
Abstract:
The present invention is generally directed to improved microfluidic devices (100), systems, and methods of using the same. In particular, the device and systems employ channels (408, 512) having, at least in part, depths that are varied to provide advantageous effects upon the flow rate of fluids in the channel. Typically, microscale channel (408, 512) has an aspect ratio (width/depth) less than or equal to about 1. Variation of the channel depth (408, 512) may be optimized depending upon the nature of the materials to be mixed.