摘要:
Mass cytometry method. In one aspect, the method includes providing a sample having at least one cell type and mixing the sample with material such as nanoparticles functionalized with affinity molecules for the at least one cell type. The sample is transported through a suspended microchannel resonator to record a mass histogram and a cell count for the at least one cell type is determined from the histogram.
摘要:
Microsystem for monitoring cell growth. A microfluidic structure is designed to allow cells to circulate therethrough and the microfluidic structure includes modules to monitor mass, mass density and fluorescence of the cell.
摘要:
Mass cytometry method. In one aspect, the method includes providing a sample having at least one cell type and mixing the sample with material such as nanoparticles functionalized with affinity molecules for the at least one cell type. The sample is transported through a suspended microchannel resonator to record a mass histogram and a cell count for the at least one cell type is determined from the histogram.
摘要:
Method for measuring a target particle property. A suspended microchannel resonator is calibrated to determine the relationship between a detected mass and a resonance frequency shift of the resonator. The target particle is suspended in a fluid and introduced into the resonator, and the resonator frequency shift due to the particle is measured. Target particle mass is calculated from the resonator frequency shift, the target particle density, and the fluid density. A target particle property such as size or volume is determined from the calculated target particle mass.
摘要:
Method for measuring a target particle property. A suspended microchannel resonator is calibrated to determine the relationship between a detected mass and a resonance frequency shift of the resonator. The target particle is suspended in a fluid and introduced into the resonator, and the resonator frequency shift due to the particle is measured. Target particle mass is calculated from the resonator frequency shift, the target particle density, and the fluid density. A target particle property such as size or volume is determined from the calculated target particle mass.
摘要:
Method for measuring a target particle property. A suspended microchannel resonator is calibrated to determine the relationship between a detected mass and a resonance frequency shift of the resonator. The target particle is suspended in a fluid and introduced into the resonator, and the resonator frequency shift due to the particle is measured. Target particle mass is calculated from the resonator frequency shift, the target particle density, and the fluid density. A target particle property such as size or volume is determined from the calculated target particle mass.
摘要:
Method for measuring a target particle property. A suspended microchannel resonator is calibrated to determine the relationship between a detected mass and a resonance frequency shift of the resonator. The target particle is suspended in a fluid and introduced into the resonator, and the resonator frequency shift due to the particle is measured. Target particle mass is calculated from the resonator frequency shift, the target particle density, and the fluid density. A target particle property such as size or volume is determined from the calculated target particle mass.
摘要:
Methods and apparatus for improving measurements of particle or cell characteristics, such as mass, in Suspended Microchannel Resonators (SMR's). Apparatus include in particular designs for trapping particles in SMR's for extended measurement periods and for changing the fluid properties within the SMR during the extended periods. Methods include techniques to provide for cell growth over time and over time in response to changing fluid properties to aid in determining parameters such as drug resistance and drug susceptibility.
摘要:
In one aspect, the present invention provides a device and method for real-time, direct detection of heparin in buffer and in serum comprising a microfluidic field-effect device as an affinity biosensor. The sensor is based on an electrolyte-insulator-silicon structure, and is manufactured by a standard high-yield silicon microfabrication process. The binding of heparin to the sensor surface induces a change in the insulator-electrolyte surface potential, which is measured as a change in sensor capacitance. To ensure the binding selectivity, protamine and antithrombin III are used as affinity probes.
摘要:
Methods and apparatus for improving measurements of particle or cell characteristics, such as mass, in Suspended Microchannel Resonators (SMR's). Apparatus include in particular designs for trapping particles in SMR's for extended measurement periods and for changing the fluid properties within the SMR during the extended periods. Methods include techniques to provide for cell growth over time and over time in response to changing fluid properties to aid in determining parameters such as drug resistance and drug susceptibility.