摘要:
A microfluidic assembly comprising a replaceable microfluidic circuit and a thermal unit, the microfluidic circuit adapted to contact the thermal unit by contact between one or more membranes in the microfluidic circuit and the at least one temperature controlling element in the thermal unit to achieve temperature control of a substance or substances inside one or more fluidic compartments in the microfluidic circuit. A related method to control temperature and/or physical state of a substance in the fluidic compartments and related testing systems are also described.
摘要:
The invention is a photonic crystal laser including a photonic crystal slab laser cavity including InGaP/InGaAlP crystalline layers, the InGaP/InGaAlP crystalline layers having a relaxed strain at one or more etched surfaces and a higher strain at a plurality of quantum wells and at a distance from the one or more etched surfaces. The photonic crystal laser also includes electrical pads configured to receive an electrical signal the electrical pads attached to the photonic crystal slab laser cavity via an insulating layer, the photonic crystal laser configured to emit a laser light in response to the electrical signal. In another aspect, the invention features a photonic crystal detector including a photonic crystal slab cavity including InGaP/InGaAlP crystalline layers. In yet another aspect, the invention features a process to fabricate a photonic crystal laser cavity.
摘要:
An apparatus for analysis of a sample and in particular of a biological sample. The apparatus contains a microfluidic chip with dies, adapted to be selectively activated or deactivated by presence of target molecules in the biological sample. The apparatus further contains a light source to emit light for illumination of the microfluidic chip and an optical filter to allow passage of the light from the dies once activated or deactivated by the presence of the target molecules. A method for pressurizing a microfluidic chip is also disclosed, where a chamber is provided, the chamber is connected with the microfluidic chip and pressure is applied to the chamber.
摘要:
This invention provides a system for performing PCR, and real time PCR in particular with great speed and specificity. The system employs a heat block containing a liquid composition to rapidly transfer heat to and from reaction vessels. The system makes use of the reflective properties of the liquid metal to reflect signal from the PCR into the vessel and out the top. In this way, the signal can be measured by an optical assembly in real time without removing the vessels from the heat block.
摘要:
Various embodiment comprise silicon-on-insulator waveguide designs that simultaneously achieve both high optical confinement, low-loss, and provide for electrical connections. In certain embodiments, high index contrast waveguides comprise a central elongate waveguide portion and a segmented portion comprising a single thin layer of Silicon-On-Insulator that achieves both high optical confinement and minimal insertion loss. Other devices, such as chemical and biological sensors, and optical elements may also be fabricated.
摘要:
By use of the vias a microfluidic autoregulator is fabricated comprising an origin of a fluid, a sink for the fluid, a main flow channel coupling the origin and the sink, a valve communicated to the main flow channel to selectively control flow of fluid therethrough, and means dependent on flow through the main flow channel for creating a pressure differential across the valve to at least partially activate the valve to control flow of fluid through the main flow channel. The means for dependent on flow for creating a pressure differential comprises either a dead-end detour channel from the flow channel to the valve, or a loop channel fed back to the control chamber of the valve.
摘要:
A printing method to fabricate three-dimensional microfluidic components is disclosed. A three-dimensional mold made of a first wax is formed. A sacrificial material made of a second wax is provided as a temporary support and then dissolved. A component material is poured onto the mold and cured. The first wax is then melted away. In this way three-dimensional interconnected fluidic components comprising channels, vias and control sections can be obtained.
摘要:
A system, method and apparatus provide the ability to detect a chemical in an analyte. To detect the chemical, the invention utilizes a laser having an open cavity. A photonic crystal lattice structure having a defect defines a suitable geometry for such a cavity. The analyte is introduced directly into a high optical field of the cavity. Thereafter, the cavity is pumped and an emission from the laser is used to detect the presence of the chemical in the analyte.
摘要:
A method of fabricating an elastomeric structure, comprising: forming a first elastomeric layer on top of a first micromachined mold, the first micromachined mold having a first raised protrusion which forms a first recess extending along a bottom surface of the first elastomeric layer; forming a second elastomeric layer on top of a second micromachined mold, the second micromachined mold having a second raised protrusion which forms a second recess extending along a bottom surface of the second elastomeric layer; bonding the bottom surface of the second elastomeric layer onto a top surface of the first elastomeric layer such that a control channel forms in the second recess between the first and second elastomeric layers; and positioning the first elastomeric layer on top of a planar substrate such that a flow channel forms in the first recess between the first elastomeric layer and the planar substrate.
摘要:
A method for monitoring the surface roughness of a metal, comprises impinging a laser beam onto the surface of a metal layer to induce the formation of a plasmon therein, and monitoring a current of decay electrons emitted by the plasmon.