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541 results about "Self-assembled monolayer" patented technology
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Self-assembled monolayers (SAM) of organic molecules are molecular assemblies formed spontaneously on surfaces by adsorption and are organized into more or less large ordered domains. In some cases molecules that form the monolayer do not interact strongly with the substrate. This is the case for instance of the two-dimensional supramolecular networks of e.g. perylenetetracarboxylic dianhydride (PTCDA) on gold or of e.g. porphyrins on highly oriented pyrolitic graphite (HOPG). In other cases the molecules possess a head group that has a strong affinity to the substrate and anchors the molecule to it. Such a SAM consisting of a head group, tail and functional end group is depicted in Figure 1. Common head groups include thiols, silanes, phosphonates, etc.
Amperometric biosensors based on redox enzymes
InactiveUS6241863B1Improved kineticsReduced activityImmobilised enzymesBioreactor/fermenter combinationsLipid formationRedox enzymes
The invention includes various prototypical amperometric biosensors for the quantification of biological substrates such as fructose, creatinine, creatine, and sarcosine, and the methods for producing these biosensors. Also included in the invention is a minaturized version of the biosensing devices. The components of these prototypical biosensors are immobilized on a self-assembled monolayer (SAM) comprising chemisorbed alkanethiols. The deposition of an amphiphilic lipid layer to these systems increases the stability and activity of the resultant biosensor and enhances the rejection of many interferents. An additional feature of the invention is the co-deposition of the components of the sensor via a novel detergent dialysis protocol. The invention features two particular biosensor systems. One embodiment involves fructose dehydrogenase as the redox / sensor enzyme and fructose as the substrate / analyte. Another embodiment involves the measurement of the substrates / analytes, creatinine, creatine and sarcosine, using sacrosine dehydrogenase as the redox / sensor enzyme, with the involvement of creatinine amidohydrolase and / or creatine amidinohydrolase in the reaction pathway.
Owner:MONBOUQUETTE HAROLD G
Nanoscopic wire-based devices, arrays, and methods of their manufacture
Electrical devices comprised of nanoscopic wires are described, along with methods of their manufacture and use. The nanoscopic wires can be nanotubes, preferably single-walled carbon nanotubes. They can be arranged in crossbar arrays using chemically patterned surfaces for direction, via chemical vapor deposition. Chemical vapor deposition also can be used to form nanotubes in arrays in the presence of directing electric fields, optionally in combination with self-assembled monolayer patterns. Bistable devices are described.
Owner:PRESIDENT & FELLOWS OF HARVARD COLLEGE
Method for selective deposition of a thin self-assembled monolayer
ActiveUS20060128142A1Material nanotechnologySemiconductor/solid-state device manufacturingSelf-assembled monolayerSelf assemble
A method for selective deposition of self-assembled monolayers to the surface of a substrate for use as a diffusion barrier layer in interconnect structures is provided comprising the steps of depositing a first self-assembled monolayer to said surface, depositing a second self-assembled monolayer to the non-covered parts of said surface and subsequently heating said substrate to remove the first self-assembled monolayer. The method of selective deposition of self-assembled monolayers is applied for the use as diffusion barrier layers in a (dual) damascene structure for integrated circuits.
Owner:INTERUNIVERSITAIR MICRO ELECTRONICS CENT (IMEC VZW) +1
Compositions for the electronic detection of analytes utilizing monolayers
Owner:OSMETECH TECH +2
Methods of patterning a conductor on a substrate
InactiveUS20090218310A1Decorative surface effectsNanoinformaticsElectrical conductorSelf-assembled monolayer
A method of patterning a conductor on a substrate includes providing an inked elastomeric stamp inked with self-assembled monolayer-forming molecules and having a relief pattern with raised features. Then the raised features of the inked stamp contact a metal-coated visible light transparent substrate. Then the metal is etched to form an electrically conductive micropattern corresponding to the raised features of the inked stamp on the visible light transparent substrate.
Owner:3M INNOVATIVE PROPERTIES CO
Patterning solution deposited thin films with self-assembled monolayers
InactiveUS6887332B1Low costMaterial nanotechnologyNanoinformaticsSelf-assembled monolayerDeposition process
The present invention provides a method of forming a patterned thin film on a surface of a substrate having thereon a patterned underlayer of a self-assembled monolayer. The method comprises depositing a thin film material on the self-assembled monolayer to produce a patterned thin film on the surface of the substrate. The present invention further provides processes for preparing the self-assembled monolayer. The present invention still further provides solution-based deposition processes, such as spin-coating and immersion-coating, to deposit a thin film material on the self-assembled monolayer to produce a patterned thin film on the surface of the substrate.
Owner:IBM CORP
Method for fabricating fine features by jet-printing and surface treatment
A method and system for masking a surface to be etched is described. The method includes the operation of heating a phase-change masking material and using a droplet source to eject droplets of a masking material for deposit on a thin-film or other substrate surface to be etched. The temperature of the thin-film or substrate surface is controlled such that the droplets rapidly freeze after upon contact with the thin-film or substrate surface. The thin-film or substrate is then treated to alter the surface characteristics, typically by depositing a self assembled monolayer on the surface. After deposition, the masking material is removed. A material of interest is then deposited over the substrate such that the material adheres only to regions not originally covered by the mask such that the mask acts as a negative resist. Using such techniques, feature sizes of devices smaller than the smallest droplet printed may be fabricated.
Owner:XEROX CORP
Stent coatings containing self-assembled monolayers
InactiveUS7232573B1Material nanotechnologyOrganic active ingredientsSelf-assembled monolayerMedical device
Owner:ABBOTT CARDIOVASCULAR
Anti-stiction technique for thin film and wafer-bonded encapsulated microelectromechanical systems
InactiveUS6930367B2Operating environment limitedMaterial nanotechnologyAcceleration measurement using interia forcesSelf-assembled monolayerEngineering
There are many inventions described and illustrated herein. In one aspect, there is described a thin film or wafer encapsulated MEMS, and technique of fabricating or manufacturing a thin film or wafer encapsulated MEMS employing anti-stiction techniques. In one embodiment, after encapsulation of the MEMS, an anti-stiction channel is formed thereby providing “access” to the chamber containing some or all of the active members or electrodes of the mechanical structures. Thereafter, an anti-stiction fluid (for example, gas or gas-vapor) is introduced into the chamber via the anti-stiction channel. The anti-stiction fluid may deposit on one, some or all of the active members of the mechanical structures thereby providing an anti-stiction layer (for example, a monolayer coating or self-assembled monolayer) and / or out-gassing molecules on such members or electrodes. After introduction and / or application of the anti-stiction fluid, the anti-stiction channel may be sealed, capped, plugged and / or closed.
Owner:ROBERT BOSCH GMBH
Large scale patterned growth of aligned one-dimensional nanostructures
A method of making nanostructures using a self-assembled monolayer of organic spheres is disclosed. The nanostructures include bowl-shaped structures and patterned elongated nanostructures. A bowl-shaped nanostructure with a nanorod grown from a conductive substrate through the bowl-shaped nanostructure may be configured as a field emitter or a vertical field effect transistor. A method of separating nanoparticles of a desired size employs an array of bowl-shaped structures.
Owner:GEORGIA TECH RES CORP
Integrated method for release and passivation of MEMS structures
InactiveUS6902947B2Preventing undesirable etchingHigh speedMaterial nanotechnologyDecorative surface effectsHydrogenSelf-assembled monolayer
Disclosed herein is a method of improving the adhesion of a hydrophobic self-assembled monolayer (SAM) coating to a surface of a MEMS structure, for the purpose of preventing stiction. The method comprises treating surfaces of the MEMS structure with a plasma generated from a source gas comprising oxygen and, optionally, hydrogen. The treatment oxidizes the surfaces, which are then reacted with hydrogen to form bonded OH groups on the surfaces. The hydrogen source may be present as part of the plasma source gas, so that the bonded OH groups are created during treatment of the surfaces with the plasma. Also disclosed herein is an integrated method for release and passivation of MEMS structures which may be adjusted to be carried out in a either a single chamber processing system or a multi-chamber processing system.
Owner:APPLIED MATERIALS INC
Modified graphene structures and methods of manufacture thereof
InactiveUS20120058350A1Facilitates self-assembly and stabilisationIncrease the number densityNanoinformaticsSolid-state devicesSelf-assembled monolayerGraphene
The present invention is directed to a modified graphene structure comprising at least one graphene sheet (1) and a self-assembled monolayer (2) of functional organic molecules (3) non-covalently bonded to the top and / or bottom basal planes of the graphene sheet and methods of manufacture thereof. The present invention is also directed to devices comprising the modified graphene structures, including but not limited to field-effect devices and biosensors, and to methods using the modified graphene structures.
Owner:UNIV COLLEGE CORK NAT UNIV OF IRELAND CORK +1
Superhydrophilic and Superhydrophobic Powder Coated Fabric
InactiveUS20090042469A1Fibre treatmentSynthetic resin layered productsSuperhydrophobeSelf-assembled monolayer
Superhydrophilic and superhydrophobic fabrics are taught having a superhydrophilic or superhydrophobic powder disposed on the fabric. The superhydrophilic powder has at least one material of sodium borosilicate glass and porous diatomaceous earth. The powder material has a contiguous interpenetrating structure with a plurality of spaced apart nanostructured surface features. The superhydrophilic powder is switched to superhydrophobic by adding at least one superhydrophobic material of perfluorinated organics, fluorinated organics, and self-assembled monolayers.
Owner:UT BATTELLE LLC
Self-assembled monolayer blocking with intermittent air-water exposure
ActiveUS20170256402A1Semiconductor/solid-state device manufacturingChemical vapor deposition coatingSelf-assembled monolayerOrganic chemistry
Implementations described herein generally relate to processes for the fabrication of semiconductor devices in which a self-assembled monolayer (SAM) is used to achieve selective area deposition. Methods described herein relate to alternating SAM molecule and hydroxyl moiety exposure operations which may be utilized to form SAM layers suitable for blocking deposition of subsequently deposited materials.
Owner:APPLIED MATERIALS INC
Selective deposition using hydrophobic precursors
ActiveUS20170323776A1Semiconductor/solid-state device manufacturingChemical vapor deposition coatingSelf-assembled monolayerGas phase
Vapor deposition processes are provided in which a material is selectively deposited on a first surface of a substrate relative to a second organic surface. In some embodiments a substrate comprising a first surface, such as a metal, semi-metal or oxidized metal or semi-metal is contacted with a first vapor phase hydrophobic reactant and a second vapor phase reactant such that the material is deposited selectively on the first surface relative to the second organic surface. The second organic surface may comprise, for example, a self-assembled monolayer, a directed self-assembled layer, or a polymer, such as a polyimide, polyamide, polyuria or polystyrene. The material that is deposited may be, for example, a metal or metallic material. In some embodiments the material is a metal oxide, such as ZrO2 or HfO2. In some embodiments the vapor deposition process is a cyclic chemical vapor deposition (CVD) process or an atomic layer deposition (ALD) process. In some embodiments the material is deposited on the first surface relative to the second surface with a selectivity of greater than about 50%, greater than about 60%, greater than about 70%, greater than about 80%, greater than about 90% or greater than about 95%.
Owner:ASM IP HLDG BV
Nanoscopic wire-based devices and arrays
InactiveUS20050117441A1Material nanotechnologyElectrostatic/electro-adhesion relaysNanowireGas phase
Electrical devices comprised of nanoscopic wires are described, along with methods of their manufacture and use. The nanoscopic wires can be nanotubes, preferably single-walled carbon nanotubes. They can be arranged in crossbar arrays using chemically patterned surfaces for direction, via chemical vapor deposition. Chemical vapor deposition also can be used to form nanotubes in arrays in the presence of directing electric fields, optionally in combination with self-assembled monolayer patterns. Bistable devices are described.
Owner:PRESIDENT & FELLOWS OF HARVARD COLLEGE
Microcontact printing method using imprinted nanostructure and nanostructure thereof
InactiveUS20050186405A1Material nanotechnologyDecorative surface effectsMicrocontact printingSelf-assembled monolayer
A microcontact printing method using an imprinted nanostructure is provided, wherein the microcontact printing is introduced to a nanoimprint lithography process to pattern a self-assembled monolayer (SAM) The method includes forming a nanostructure on a substrate by using the nanoimprint lithography process; and patterning the nanostructure with the microcontact printing method. The operation of patterning includes: depositing a metal thin film on the nanostructure; contacting a plate with the nanostructure to selectively print the SAM on the nanostructure, wherein the SAM is inked on the plate and the metal thin film is deposited on the nanostructure; selectively removing the metal thin film by using the SAM as a mask; removing the SAM from the nanostructure; and patterning the substrate by using the remaining metal thin film on the nanostructure as a mask.
Owner:KOREA INST OF MACHINERY & MATERIALS
Sensor surfaces for detecting analytes
InactiveUS7208322B2Conducive to loadAdjustable quantityMaterial nanotechnologyBioreactor/fermenter combinationsAnalyteSelf-assembled monolayer
The present invention provides a sensor surface comprising: a substrate coated with a free electron metal; and a matrix layer disposed on the free electron metal, wherein the matrix layer comprises an organic compound having a boronic acid complexing moiety. The matrix is preferably a self-assembled monolayer (SAM), a mixed self-assembled monolayer (mSAM), or combinations thereof.
Owner:AGILENT TECH INC
Immunochemical detection of an explosive substance in the gas phase through surface plasmon resonance spectroscopy
InactiveUS6573107B1Bioreactor/fermenter combinationsMaterial nanotechnologySurface plasmon resonance spectroscopyGas phase
The biosensor involves a specially designed surface which can be optically coupled to a Surface Plasmon Resonance spectrometer. The key components of the biosensor are a bimetallic layer, a self assembled monolayer of chemicals and a layer of biomolecules such as special antibodies. The innovative bimetallic layer combines the sensitivity of silver metal and durability of gold and thus make it an ideal biosensor layer not only for a low volatility gas phase detection but also for a liquid phase detection. The successful application of the biosensor in high explosive substance detection proves that the biosensor is a sensitive and highly specific device for security and anti-terrorism applications, when it is combined with a Surface Plasmon Resonance Spectroscope.
Owner:UNIVERSITY OF WYOMING
Nanomaterial facilitated laser transfer
InactiveUS20090130427A1Facilitate deposition/removalLayered productsTransfer patterningNanoparticleSelf-assembled monolayer
The invention relates to the deposition or transfer of material using a laser induced forward transfer process. More specifically, the invention relates to the transfer of material using a laser induced forward transfer process wherein the transfer process is facilitated or enabled by nanomaterials. Nanomaterials in the form of nanoparticles or nanofilms may be employed, optionally including a surface coating or self-assembled monolayer surface coating, making use of properties of the nanomaterials that allow the laser induced forward transfer process to be practiced at irradiation energies and temperatures lower than commonly used. The technique may be well suited for depositing organic layers.
Owner:RGT UNIV OF CALIFORNIA +1
Carbon nanotube-based glucose sensor
ActiveUS20050265914A1Maximize sensitivityOptical radiation measurementImmobilised enzymesGlucose sensorsAnalyte
The present invention provides a sensor, such as a biosensor, comprising at least one self-assembled monolayer (SAM) comprising analyte-sensitive groups, such as glucose-sensitive groups, attached to the surface of the outer wall of a carbon nanotube (CNT), such as a single-walled carbon nanotube (SWNT), by terminal groups, which bind to a thin layer of a metal or metal oxide, which has been deposited on the surface of the outer wall of the nanotube.
Owner:HONEYWELL INT INC
Optical components array device, microlens array and process of fabricating thereof
InactiveUS20070217019A1Low costImprove performanceMountingsLensSelf-assembled monolayerMicro lens array
A process of fabricating a microlens array is provided. A self-assembled monolayer is formed on a substrate to form a hydrophilic region and a hydrophobic region. A liquid material is coated on the substrate so that a plurality of liquid microlenses is condensed on the hydrophilic region. The liquid microlenses are cured to form a plurality of microlenses.
Owner:CHUNGHWA PICTURE TUBES LTD
Compositions for the electronic detection of analytes utilizing monolayers
InactiveUS7393645B2Bioreactor/fermenter combinationsBiological substance pretreatmentsOligomerAnalyte
Owner:ROCHE MOLECULAR SYST INC +1
Device containing cytophilic islands that adhere cells separated by cytophobic regions
InactiveUS7067306B2Promote and prevent cell-cell contactAvoid contactImmobilised enzymesBioreactor/fermenter combinationsCell adhesionSelf-assembled monolayer
The invention provides a device for adhering cells in a specific and predetermined position, and associated methods. The device includes a plate defining a surface and a plurality of cytophilic islands that adhere cells, isolated by cytophobic regions to which cells do not adhere, contiguous with the cytophilic islands. The islands or the regions or both may be formed of a self-assembled monolayer (SAM).
Owner:PRESIDENT & FELLOWS OF HARVARD COLLEGE
Device having self-assembled-monolayer
InactiveUS20120088315A1Avoid inhibitionEffective corrosion inhibitionComponent separationBiological material analysisSelf-assembled monolayerSensing applications
A device for bio-sensing applications is disclosed, comprising a substrate such as a semiconductor chip having Cu electrodes thereon, and a self assembled monolayer bonded to at least one of the Cu electrodes, wherein molecules of the self-assembled monolayer comprise a head group which bonds to Cu, a carbon-comprising chain comprising a chain of at least 12 C atoms, and a terminal group which is hydrophilic and for binding a bio-receptor. The terminal group is hydrophilic to allow binding to the bio-receptor, and inclusion of the carbon-comprising chain, limits or avoids corrosion of the copper. Also disclosed is a method of providing such a device, activating the terminal group and coupling a bio-receptor to the activated terminal group. Disclosure further extends to use of such a device for bio-sensing applications.
Owner:NXP BV
Organic thin film transistor(s) and method(s) for fabricating the same
InactiveUS20060289858A1Improve electrical performanceHigh carrier mobilitySolid-state devicesSemiconductor/solid-state device manufacturingOrganic filmSelf-assembled monolayer
Example embodiments of the present invention for fabricating an organic thin film transistor including a substrate, a gate electrode, a gate insulating layer, metal oxide source / drain electrodes and an organic semiconductor layer wherein the metal oxide source / drain electrodes are surface-treated with a self-assembled monolayer (SAM) forming compound containing a sulfonic acid group. According to example embodiments of the present invention, the surface of the source / drain electrodes may be modified to be more hydrophobic and / or the work function of a metal oxide constituting the source / drain electrodes may be increased to above that of an organic semiconductor material constituting the organic semiconductor layer. Organic thin film transistors fabricated according to one or more example embodiments of the present invention may exhibit higher charge carrier mobility. Also disclosed are various example devices including display devices having organic thin film transistors made by example embodiments of the present invention.
Owner:SAMSUNG ELECTRONICS CO LTD
Device containing cytophilic islands that adhere cells separated by cytophobic regions
InactiveUS20060210595A1Immobilised enzymesMaterial nanotechnologyCell adhesionSelf-assembled monolayer
The invention provides a device for adhering cells in a specific and predetermined position, and associated methods. The device includes a plate defining a surface and a plurality of cytophilic islands that adhere cells, isolated by cytophobic regions to which cells do not adhere, contiguous with the cytophilic islands. The islands or the regions or both may be formed of a self-assembled monolayer (SAM).
Owner:PRESIDENT & FELLOWS OF HARVARD COLLEGE
Methods of surface modification of a flexible substrate to enhance cell adhesion
ActiveUS7198855B2Improve cell adhesionMaterial nanotechnologyPretreated surfacesAdhesion processCell adhesion
The present invention provides methods of producing a surface with enhanced cell-adhesive properties comprising applying a stress to a polymeric matrix. The strained matrix is then modified by grafting a self-assembled monolayer onto the strained matrix, with the self-assembled monolayer comprising at least one exposed functional group. At least one cell-adhesive molecule can then be coupled to the at least one exposed functional group on the self-assembled monolayer to produce a surface with enhanced cell-adhesive properties.
Owner:BECTON DICKINSON & CO +1
Metal ion concentration analysis for liquids
ActiveUS20060158653A1Conveniently integrated into many applicationRobust and conveniently integratedMaterial nanotechnologyScattering properties measurementsCost effectivenessSelf-assembled monolayer
An apparatus utilizes miniaturized surface plasmon resonance (SPR) and ion-selective self-assembled monolayer (SAM) and hydrogel chemistry to measure metal ion concentrations in liquids. The SPR optical system is packaged in a compact and cost-effective form factor. An electronic circuit drives the optical system. The SPR system utilizes an optical window that is coated with the SAM layer or hydrogel material. The SAM layer and hydrogel materials are highly selective to a specific metal ion of interest. The miniaturized SPR sensor is situated in an optical-fluidic cell or an optical-fluidic manifold with the SAM layer or hydrogel material in contact with the liquid. Metal ions selectively attach to the SAM layer or hydrogel material, thereby affecting the SPR signal. Changes in the SPR signal are used to accurately determine the metal ion concentration in the liquid. The liquids may be either static or dynamic.
Owner:ENTEGRIS JETALON SOLUTIONS
Functionalization of air hole arrays of photonic crystal fibers
InactiveUS20070020144A1Material nanotechnologyRadiation pyrometrySurface-enhanced Raman spectroscopySelf-assembled monolayer
An inventive sensor is used in combination with spectroscopic techniques to detect, identify and quantify ultratrace (ppt to ppb) quantities of analytes in air or water samples. The sensor preferably comprises a photonic crystal fiber having an air hole cladding with functionalized air holes. Surface-enhanced Raman spectroscopy is a preferred spectroscopic technique. In such applications, the air holes of the fiber may be functionalized by adsorbing a self-assembled monolayer on their inner surfaces, and immobilizing metallic nanoparticles to the monolayer. The invention has chemical and biomedical applications, and utility in detecting chemical and biological agents used in warfare.
Owner:STEVENS INSTITUTE OF TECHNOLOGY
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