Abstract:
The present invention relates to a method of forming a device, more particularly the present invention relates to a method of forming a graphene device by effectively transferring a graphene layer comprising the steps of providing at least a first material (11) layer, depositing at least a second material (12) layer on said at least a first material (11) layer, and depositing at least a catalyst layer (21) on said at least a second material (12) layer for forming nanostructures (22), etching said at least a first material (11) layer, and transferring remaining layers of said at least a second material (12) layer with nanostructures (22) onto at least a substrate (13).
Abstract:
The present invention relates to an apparatus for sorting particles by dielectrophoresis. The apparatus comprises of a primary microchannel (110), at least one side microchannel (120), and at least three electrically coupled electrodes (131, 132, 133). The electrodes (131, 132, 133) are arranged in the primary microchannel (110) and are positioned near the proximal end of the side microchannel (120). A first electrode (131) is a planar electrode forming a part of the bottom inner surface of the primary microchannel (110). A second electrode (132) is a planar electrode forming a part of the top inner surface of the primary microchannel (110). A third electrode (133) is a comb-like electrode suspended in the middle of the primary microchannel (110) and planarly inclined towards the side microchannel (120).
Abstract:
A chemical sensor having an ion sensitive field effect transistor (ISFET) comprising a substrate (10) situated with a source (4) and a drain (3); an ion sensing gate (5) disposed between the source and the drain; an ion-sensitive film (1) formed on the surface of the substrate and the ion sensing gate; an electrode domain (6) formed on the ion-sensitive film surrounding the periphery of the ion sensing gate (5) characterized in that the electrode domain (6) is made of tungsten, titanium or tungsten suicide.
Abstract:
A method for fabricating a micromechanical device comprises the steps of providing a substrate having a first dielectric layer on top surface of said substrate, a bottom conductive layer on top surface of said first dielectric layer, a second dielectric layer on said bottom conductive layer, a sacrificial layer on said second dielectric layer, a third dielectric layer on said sacrificial layer, and a top conductive layer on said third dielectric layer, etching a plurality of holes at said top conductive layer, then at said third dielectric layer and said sacrificial layer, and sealing said etched holes of said top conductive layer and third dielectric layer by depositing a fourth dielectric layer on top of said top conductive layer.
Abstract:
The present invention discloses a method of preparing functionalized graphene using a biodegradable solvent. Graphene nanoplatelets and organic peroxide are mixed in dihydrolevoglucosenone solution, at room temperature to 60°C. Dihydrilevoglucosenone solution, also known as Cyrene trademark, is a biodegradable solution. Alkoxysilane is added to the solution at 60 to 90°C. The solution is sonicated with ultrasonic waves. The mixture is washed with polar solvent. The solution is dried to obtain alkoxysilane functionalized graphene. The overall process involves minimal heat.
Abstract:
The present invention discloses a method of preparing silver nanoparticles colloidal solution to be used as conductive ink. The solution is prepared by mixing silver, water, surface coating agent and silver reducing agent into a silver colloidal mixture. The silver mixture is sonicated with ultrasonic waves using low temperature heating. Polar solvent is added to the mixture. The silver mixture is centrifuged which forms precipitate. The precipitate is grinded to obtain coated silver nanoparticles. The silver nanoparticles is processed into ink and inserted in an inkjet cartridge. The inkjet cartridge can be operated with a printer below 50°C. The overall process involves minimal heat. The surface coating agent is selected from the group consisting of carboxyl, carbonyl, carboxylate and acrylic-based polymer. A single layer of printed conductive pattern can be obtained by using the prepared ink.
Abstract:
Described herein is a metal electrode (100) having at least one high aspect ratio structure. The metal electrode (100) comprises a silicon layer (101) having the high aspect ratio structure, an oxide layer (102) on top of the silicon layer (101), an adhesive layer (103) on top of the oxide layer (102), and a metal layer (104) on top of the adhesive layer (103). The thickness of the metal layer (104) is at least 15 times lesser than the height of the high aspect ratio structure. Due to this particular feature, the metal layer (104) is deposited on top of the adhesive layer (103) in a self-aligned manner, taking the shape of the high aspect ratio structure, and disconnected at the wall of the high aspect ratio structure. Further, the metal electrode (100) can be modified accordingly to suit different applications. Also described herein is a method for fabricating the aforementioned metal electrode (100).
Abstract:
A resistive gas sensor device, wherein the gas sensor device operates based on changes in electrical resistivity using nanomaterials interconnectable by conductive bridge electrodes between contact electrodes.
Abstract:
A FET-based sensor with integrated microfluidics components on opposite surfaces of the substrate for biological or chemical analysis with fluid manipulation capabilities. The FET-based sensors and microfluidic elements are embedded in a single chip and on a single substrate. The contact pads for the sensor are at the opposing side of the microfluidic components and sensing element. This will ensure that only components which need to be in contact with the fluid region will be exposed to the fluid boundary while the electrical and electronics components will inherently be protected from the fluid region. This eliminates the need for very reliable and leakage-free packaging material and technology traditionally required for segregation of the electrical components to the sensing and microfluidic regions.
Abstract:
An integrated packaged microchip (100) including at least one environmental sensor (104) and at least one Read-Out Integrated Chip (ROIC) (102) is provided, characterized in that, the integrated packaged microchip (100) further includes an etched opening (108) of the environmental sensor (104) exposed to a sensable environment, using at least one layer of glass wafer (101,106) and at least one layer of silicon wafer (107).
Abstract translation:提供了包括至少一个环境传感器(104)和至少一个读取集成芯片(ROIC)(102)的集成封装微芯片(100),其特征在于,集成封装微芯片 (100)还包括使用至少一层玻璃晶片(101,106)和至少一层硅晶片(107)暴露于敏感环境的所述环境传感器(104)的蚀刻开口(108)。 p >