摘要:
Devices comprising multi-compartment fluidic cell with multiple inlets. Compartments can be separated from one another using soft seals. The main cell can be located between two adjacent secondary cells. The main cell carries the main flow while the secondary cells can carry either the main flow or any auxiliary flows. The flow in the multi-compartment cells minimizes fluid leakage and causes reduced pressure difference between the main cell and the two secondary cells especially under similar flow conditions.
摘要:
A cooling enhancement apparatus includes a first substrate and a second substrate, the first substrate having a face in contact with at least one hot medium and having another face in contact with a secondary gas. The second substrate includes a face in contact with the secondary gas and has the other face in contact with a main gas. The faces of the first and second substrates in contact with the secondary gas generally oppose each other. One or more flexible seals can be attached to the first substrate and to the second substrate to form one or more closed enclosures including the secondary gas so that the second substrate moves relative to the first substrate when the secondary gas undergoes volumetric thermal expansion.
摘要:
System and method for cooling of an integrated circuit utilizing Micro-Electro Mechanical Systems (MEMS) components. A flexible thin film has an upper flexible substrate, a lower inflexible substrate and flexible seals. One face of the lower substrate is in contact with at least one hot medium and the other face is in contact with a coolant fluid. One face of the upper substrate is in contact with the coolant fluid and the other face is in contact with the surrounding ambient. Two continuous flexible seals are attached to the faces of the upper lower substrates to form at least one closed enclosure comprising a thermally conducting gas. The thermally conducting gas is in direct contact with the lower substrate. The upper substrate deflects continuously and maximally in the direction along the coolant fluid flow direction when the flexible seals deflect when the thermally conducting gas undergoes volumetric thermal expansion.
摘要:
A DL-microchannel cooling device with rotatable separating plate is disclosed. The separating plate is supported via anti-leaking flexible seals. The only allowable motion for that plate is the rotational motion about a pivot rod. The rod is taken to be aligned along the microchannel center line normal to its sides boundaries. The device can be configured as a flexible microheat exchanger and a heated DL-flexible microchannel device. The theory of linear elasticity applied to flexible seals supporting the separating plate is used to relate the moment of the pressure forces on that plate to its rotational angle. The energy equations for both fluids flows are solved numerically and analytically under special conditions. As such, the effectiveness of the flexible microheat exchanger and other performance indicators for flexible microheat exchanger and heated DL-flexible microchannel devices are calculated. The advantages of the proposed device in cooling attributes over the performance of the DL-rigid microchannel device is examined.
摘要:
Devices comprising multi-compartment fluidic cell with multiple inlets. Compartments can be separated from one another using soft seals. The main cell can be located between two adjacent secondary cells. The main cell carries the main flow while the secondary cells can carry either the main flow or any auxiliary flows. The flow in the multi-compartment cells minimizes fluid leakage and causes reduced pressure difference between the main cell and the two secondary cells especially under similar flow conditions.
摘要:
An assembly of microcantilever-based sensors with enhanced deflections. A deflection profile of an ε-assembly can be compared with that of a rectangular microcantilever and a modified triangular microcantilever. Various force-loading conditions can also be considered. A theorem of linear elasticity for thin beams is utilized to obtain the deflections. The obtained defections can be validated against an accurate numerical solution utilizing a finite element method with a maximum deviation of less than 10 percent. The ε-assembly produces larger deflections than the rectangular microcantilever under the same base surface stress and same extension length. Also, the ε-microcantilever assembly produces a larger deflection than a modified triangular microcantilever. The deflection enhancement increases as the ε-assembly's free length decreases for various types of force loading conditions. The ε-microcantilever can be utilized in microsensing applications to provide a favorable high detection capability with a reduced susceptibility to external noises.
摘要:
Disclosed herein are devices comprising at least one flexible seal, at least one flexible complex seal having at least one closed cavity containing a fluid, or a combination thereof. The devices may comprise at least one immobile and inflexible substrate and at least one mobile and inflexible substrate capable of movement due to the flexible seal, the flexible complex seal, or both. The flexible complex seals comprise at least one closed cavity comprising a fluid, such as a gas or a liquid. As disclosed, the presence or absence of heat will cause the mobile and inflexible substrate to move. The movement will increase or decrease the fluid amount or fluid flow rate in the primary fluid layer. Also disclosed are methods for enhancing the insulating properties of insulating assemblies.
摘要:
Disclosed herein are devices comprising at least one flexible seal, at least one flexible complex seal having at least one closed cavity containing a fluid, or a combination thereof. The devices may comprise at least one immobile and inflexible substrate and at least one mobile and inflexible substrate capable of movement due to the flexible seal, the flexible complex seal, or both. The flexible complex seals comprise at least one closed cavity comprising a fluid, such as a gas or a liquid. As disclosed, the presence or absence of heat will cause the mobile and inflexible substrate to move. The movement will increase or decrease the fluid amount or fluid flow rate in the primary fluid layer. Also disclosed are methods for enhancing the insulating properties of insulating assemblies.
摘要:
Disclosed herein are microcantilevers having structural shapes that are less sensitive to turbulence and drift effects yet provide greater deflections due to analyte concentration. The structural shapes include a C-shaped microcantilever, an E-shaped microcantilever, an L-shaped microcantilever, a double microcantilever, a slit microcantilever, a tapered microcantilever, and a triangular microcantilever. The microcantilevers may be piezoresistive microcantilevers. Also disclosed are microsensors, microfludic devices, and biochips that comprise the microcantilevers as well as methods of using the microcantilevers to detect analytes in a fluid sample.
摘要:
Devices for the control of flow rate and thermal conditions using two-layered thin films separated by flexible complex seals. The plates of an upper thin film are separated by a sealing assembly. The sealing assembly is composed of an elastic soft seal separating closed voids of stagnant fluid and in contact with the upper plate of the device as it is the heated plate. The lower and the upper plates of the lower thin film can be separated by an elastic soft seal. The lower and upper thin films are named as main and secondary layers, respectively. Both the upper plate of the secondary layer and the lower plate of the main layer are fixed while the intermediate plate and is free to move in the vertical direction. When the pressure or the working temperature in the secondary layer increases, the secondary layer expands causing the main layer thickness to shrink. This reduces the main layer flow rate and temperature gradients within the main layer.