摘要:
A method for assembling colloidal particles onto a substrate surface through fluid transport. The method comprises placing a first fluid placed adjacent to the substrate surface, applying a colloidal dispersion on top of the first fluid layer and removal of the first fluid layer. The method is extremely versatile, and is especially useful in depositing colloidal materials in high aspect ratio channels and vias without the need for prior treatment of the surface.
摘要:
A single-walled carbon nanotube-based micron scale multiplex biosensor is provided that enables the detection of glucose, lactate, and urea. The sensor is based on modification of semiconducting single-walled carbon nanotubes using a linker that non-covalently associates with the nanotubes and covalently couples to an enzyme. Reaction of a physiological substrate with the enzyme results in increased resistance of the nanotubes within the sensor. The sensor is suitable for use in patient monitoring, particularly in a clinical setting. Incorporation of read out electronics and an RF signal generator into the sensor device enables it to communicate to a relay station or remote receiver. Methods are also provided for fabricating the biosensor device and using the device for detection.
摘要:
Devices and methods for detecting an analyte in a gas involve the use of plasmonic excitation of a nanostructured sensing element that is tuned to absorb at a narrow bandwidth specific for light absorbed by the analyte. The sensing element can be used as a capacitive or inductive element in a circuit.
摘要:
An electrode architecture for lithium ion batteries provides cooling of the bulk electrode during room temperature to high temperature (e.g., 50° C.-80° C.) battery operation. The battery electrode architecture includes alternating layers of lithium ion active material and current collection layers containing with interconnections between current collection layers. The current collection layers contain metallic multi-walled carbon nanotubes which have high electrical and thermal conductivity. Also provided are lithium ion batteries containing the electrode. The batteries have enhanced lifetime due to avoidance of degradation reactions in the active material at high temperatures.
摘要:
Systems and methods for cooling integrated circuits and other chop-based electronic devices use plasmonic absorption and emission of near infrared (NIR) radiation. Nanostructure arrays tuned to appropriate infrared wavelengths emit NIR from a hot chip substrate to other nanostructure arrays at the chip outer package, which absorb the NIR and transmit it away from the package outer surface.
摘要:
A variety of homogeneous or layered hybrid nanostructures are fabricated by electric field-directed assembly of nanoelements. The nanoelements and the fabricated nanostructures can be conducting, semi-conducting, or insulating, or any combination thereof. Factors for enhancing the assembly process are identified, including optimization of the electric field and combined dielectrophoretic and electrophoretic forces to drive assembly. The fabrication methods are rapid and scalable. The resulting nanostructures have electrical and optical properties that render them highly useful in nanoscale electronics, optics, and biosensors.
摘要:
Thin film infrared (IR) imaging devices including a metalens layer configured to focus IR radiation onto a plasmonic absorber layer are provided for thin form factor and lightweight design of IR imaging devices. The devices can be produced using directed assembly methods and transfer printing of nanoelements. The fabrication methods are scalable and provide low cost means to produce the IR imaging devices.
摘要:
An electrode-electrolyte system for use in batteries and supercapacitors allows enhanced access of ions and electrons from the electrolyte to the electrode. The electrode includes an electrically conductive substrate, a nanostructured active material layer deposited on the substrate, and a porous membrane coating the nanostructured active material. The porous membrane is flexible and made of a polymer network and a conductive additive.
摘要:
A simple and highly sensitive single walled carbon nanotube (SWNT) sensor is provided for detection of a variety of analytes, including small molecules, macromolecules, and pathogens. The high sensitivity, specificity, stability, and rapid operation of the sensor render it useful for detection and quantification of low level contaminants such as pharmaceuticals and pathogens in environmental samples, including wastewater and natural bodies of water.
摘要:
An immunosensing device includes a hub mountable to a device for fluid collection, such as a syringe, sample collection container, or vacuum collection container, and a biosensor mounted to the hub. The biosensor includes a biosensor active area in fluid communication with a fluid passage within the hub. The biosensor active area includes nanoelements functionalized with one or more antibodies or antigen binding fragments thereof for contact with a fluid in the fluid passage. The biosensor active area can include multiple regions each including nanoelements functionalized with a different antibody or antigen binding fragment thereof to detect multiple biomarkers. The biosensor, separately or attached to the hub, can be inserted in a biomarker reader for detection of a biomarker in the fluid.