Abstract:
A surface micromachined micromagnetic actuator is provided with a flap (14) using magnetic force as the actuating force. The flap is coupled by one or more beams (16) to a substrate and is cantilevered over the substrate. A Permalloy layer or a magnetic coil (12) is disposed on the flap such that when the flap is placed in a magnetic field, it can be caused to selectively interact and rotate out of the plane of the magnetic actuator. The cantilevered flap is released from the underlying substrate by etching out an underlying sacrificial layer disposed between the flap and the substrate (22). The etched out and now cantilevered flap is magnetically actuated to maintain it out of contact with the substrate while the just etched device is dried in order to obtain high release yields.
Abstract:
A neurostimulator device for use with groups (e.g., more than four groups) of electrodes. The neurostimulator may include a stimulation assembly configured to deliver different stimulation to each of the groups. The neurostimulator may also include at least one processor configured to direct the stimulation assembly to deliver stimulation to the groups. The stimulation delivered to at least one of the groups may include one or more waveform shapes other than a square or rectangular wave shape. The processor may receive data from one or more sensors and use that data to modify the stimulation delivered. The neurostimulator may be configured to communicate with an external computing device. The neurostimulator may send data to and/or receive data and/or instructions from the computing device. The computing device may use information collected by one or more sensors to at least partially determine stimulation parameters to communicate to the neurostimulator.
Abstract:
The present invention provides methods for designing a filtration systems for capturing viable tumor cells, such as circulating tumor cells at high efficiency and high viability. The methods involve development of a set of "key engineering design parameters" that are crucial to achieve high tumor cell viability. These important design parameters include the filter geometry design, fluid delivery method, transfilter pressure and total filtration time.
Abstract:
The present invention provides a method for diagnosing cancer, predicting a disease outcome or response to therapy in a patient sample. The method involves isolating a circulating tumor cell (CTC), for example, a viable CTC, from a sample using a parylene microfilter device comprising a membrane filter having or consisting of a parylene substrate, which has an array of holes with a predetermined shape and size; and detecting and quantifying telomerase activity in blood circulating tumor cells. The invention further provides methods of using cells live-captured in various applications.
Abstract:
A method for manufacturing integrated objects, e.g., electronic devices, biological devices. The method includes providing a holder substrate, which has at least one recessed region, the recessed region having a predetermined shape. The holder substrate has a selected thickness and is characterized as being substantially rigid in shape. The method includes aligning a chip comprising a face and a backside into the predetermined shape of the recessed region and disposing the chip into the recessed region. The chip is secured into the recessed region. The method includes providing a first film of insulating material having a first thickness overlying the face and portions of the holder substrate to attach the chip to a portion of the first film of insulating material and patterning the first film of insulating material to form at least one opening through a portion of the first thickness to a contact region on the face of the chip. The method includes forming a metallization layer overlying the first film of insulating material to couple to the contact region through the one opening and forming a protective layer overlying the metallization layer. The method includes releasing the chip from the holder substrate while maintaining attachment of the chip to the first film of insulating material.
Abstract:
A method (and resulting structure) for fabricating a sensing device. The method includes providing a substrate comprising a surface region and forming an insulating material overlying the surface region. The method also includes forming a film of carbon based material overlying the insulating material and treating to the film of carbon based material to pyrolyzed the carbon based material to cause formation of a film of substantially carbon based material having a resistivity ranging within a predetermined range. The method also provides at least a portion of the pyrolyzed carbon based material in a sensor application and uses the portion of the pyrolyzed carbon based material in the sensing application. In a specific embodiment, the sensing application is selected from chemical, humidity, piezoelectric, radiation, mechanical strain or temperature.
Abstract:
An electrostatic fluid regulating device and methods. The device has a substrate. The device also has a first electrode coupled to the substrate. The device has a polymer based diaphragm. A second electrode is coupled to the diaphragm. A polymer based fluid chamber is coupled to the diaphragm. The device also has an inlet coupled to the polymer based fluid chamber and an outlet coupled to the polymer based fluid chamber.
Abstract:
A method for integrally fabricated MEMs devices with include micro or nanoparticles by providing a mixture (16) of sacrificial material (12) and a multiplicity of particles (10), disposing the mixture (16) on a substrate (14), fabricating a MEMs structure on the substrate (14) including at least part of the mixture (16), so that at least some of the mixture (16) is enclosed in the MEMs structure, removing the sacrificial material (12), and leaving at least some of the multiplicity of particles (10) substantially free and enclosed in the MEMs structure. The step of fabricating a MEMs structure is quite general and is contemplated as including one or a multiplicity of additional steps for creating some type of structure in which the particles (10), which may be microbeads or nanobeads, are included.