A method for analyzing an interaction between a sample surface and a drop of liquid comprises applying the drop of liquid to the sample surface and illuminating the drop of liquid using at least two light sources. The at least two light sources are each arranged at a light source position surrounding the drop of liquid. Light reflected from the drop of liquid detecting and a sensor position on a sensor of a camera is determined for each detected light reflection. Light source positions are assigned to individual light source positions. A position of the drop of liquid is calculated relative to the sensor and an item of size information of the drop of liquid is determined. The position and the item of size information are calculated from the pairs of one sensor position and one associated light source position.

A method for analyzing an interaction between a sample surface and a drop of liquid comprises applying the drop of liquid to the sample surface and illuminating the drop of liquid using at least two light sources. The at least two light sources are each arranged at a light source position surrounding the drop of liquid. Light reflected from the drop of liquid detecting and a sensor position on a sensor of a camera is determined for each detected light reflection. Light source positions are assigned to individual light source positions. A position of the drop of liquid is calculated relative to the sensor and an item of size information of the drop of liquid is determined. The position and the item of size information are calculated from the pairs of one sensor position and one associated light source position.

This invention relates to a method for measuring viscosity of a fluid using particle diffusometry (PD). The method finds practical applications in detecting structural and functional changes of a biomolecular composition by comparing the viscosity change as compared with the standard of the biomolecular composition. This method may also find uses in clinical diagnosis and quality control of clinical biological medicines, food and feeds during the process of manufacturing, distribution and consumption.

This invention relates to a method for measuring viscosity of a fluid using particle diffusometry (PD). The method finds practical applications in detecting structural and functional changes of a biomolecular composition by comparing the viscosity change as compared with the standard of the biomolecular composition. This method may also find uses in clinical diagnosis and quality control of clinical biological medicines, food and feeds during the process of manufacturing, distribution and consumption.

An analysis method and device including detecting at least one particle of matter in a fluid inside in a reaction chamber and correlating a change in the particle to a physicochemical property of the matter.

An analysis method and device including detecting at least one particle of matter in a fluid inside in a reaction chamber and correlating a change in the particle to a physicochemical property of the matter.

In one aspect, a system for controlled temporal extraction of ingredients of a pharmaceutical dosage form is disclosed, which comprises at least one reservoir for storing a fluid comprising a solvent, a cell having at least one inlet port in fluid communication with said reservoir for receiving a flow of the fluid from the reservoir and an outlet port through which fluid can exit the cell, where the cell is configured to receive a pharmaceutical dosage form. The system can further include an in-line heater disposed in proximity of the inlet port of the cell for heating the fluid to an elevated temperature prior to entry thereof into the cell, and a pump for causing fluid circulation between said reservoir and said cell.

A method of making a portion of a microfluidic channel includes lithographically patterning a first pattern into a first layer of photoresist disposed on a substrate, the first pattern representative of morphology of a reservoir rock; etching the first pattern into the substrate to form a patterned substrate; disposing a second layer of photoresist onto the patterned substrate; lithographically patterning a second pattern into the second layer of photoresist to reveal portions of the patterned substrate; and depositing calcite onto the exposed portions of the patterned substrate.

A method of making a portion of a microfluidic channel includes lithographically patterning a first pattern into a first layer of photoresist disposed on a substrate, the first pattern representative of morphology of a reservoir rock; etching the first pattern into the substrate to form a patterned substrate; disposing a second layer of photoresist onto the patterned substrate; lithographically patterning a second pattern into the second layer of photoresist to reveal portions of the patterned substrate; and depositing calcite onto the exposed portions of the patterned substrate.

The low-field nuclear magnetic resonance (LF-NMR) is used in the design of a formula of a water-based printing ink and selection of the water-based printing ink or a wetting agent. The water-based printing ink or the wetting agent is quickly selected through the inversion data of an LF-NMR transverse relaxation time (T.sub.2). By using LF-NMR to detect the distribution of water in the water-based printing ink or wetting agent, the water-based printing ink is quickly detected in real-time and a high-quality water-based printing ink is selected, which contributes to the design and development of water-based printing inks. The state of water in the ink also is adjusted based on the relationship between the distribution state of water in the printing ink and the definition of the printed pattern, thereby ensuring the definition of the printed pattern.