摘要:
Disclosed is a method of manufacturing a porous graphene film representing superior electrical properties. The method includes preparing a graphene/polymer composite dispersed solution by adding polymer particles to a first graphene dispersed solution obtained by dispersing graphene powders into a solvent, manufacturing a graphene/polymer composite film by using the graphene/polymer composite dispersed solution, and manufacturing the porous graphene film by removing the polymer particles from the graphene/polymer composite film.
摘要:
Surface enhanced Raman scattering (SERS) substrates may be fabricated using a shadow mask assisted evaporation (SMAE) method to provide for enhanced detection sensitivity with respect to target molecules that are located upon, and sensitized by, the SERS enhanced substrates. Such SERS substrates provide a two dimensional array of repeating nanostructures that may include, but are not limited to nano-pillar, nano-nib, nano-elliptical cylinder and nano-triangular tip nanostructures, any of which may be augmented with gold nanospheres. The particular SERS enhanced substrates in accordance with the embodiments, in particular when augmented with gold nanospheres, provide desirably enhanced sensitivity.
摘要:
A method for detecting target nucleic acids such as SNPs is provided. The method comprises performing a ligase detection reaction (LDR), performing surface enhanced Raman scattering (SERS) on the LDR, and analyzing the outcome of the LDR using analysis and/or quantification of the SERS by detecting an emitted Raman signature. The LDR-SERS method can be used for sensitive and specific detection of any nucleic acid sequence of interest. A microfluidic SERS detection device is also provided. The device comprises electrokinetically active microwells for mixing and concentrating analytes and in which analytes can be quantified. The device can be used for performing the LDR-SERS method in optofluidic chip format.
摘要:
A method is provided for fabricating a nanochannel. The method comprises providing a microchannel and controlling collapse of the microchannel so that it collapses to form a nanochannel of desired dimensions. The method employs a collapsible, flexible material such as the elastomer polydimethylsiloxane (PDMS) to form the nanochannel. A master is provided that is configured to have geometric conditions that promote a desired frequency of microchannel collapse. A collapsible material having a stiffness that also promotes a desired frequency of microchannel collapse is molded on the master. The molded collapsible material is removed from the master and bonded to a base, thereby forming the microchannel, which then collapses (or is collapsed) to form the nanochannel of desired dimensions. Nanofluidic and microfluidic devices comprising complex nanochannel structures and micro to nanochannel transitions are also provided.
摘要:
A method for detecting target nucleic acids such as SNPs is provided. The method comprises performing a ligase detection reaction (LDR), performing surface enhanced Raman scattering (SERS) on the LDR, and analyzing the outcome of the LDR using analysis and/or quantification of the SERS by detecting an emitted Raman signature. The LDR-SERS method can be used for sensitive and specific detection of any nucleic acid sequence of interest. A microfluidic SERS detection device is also provided. The device comprises electrokinetically active microwells for mixing and concentrating analytes and in which analytes can be quantified. The device can be used for performing the LDR-SERS method in optofluidic chip format.
摘要:
A method is provided for fabricating a nanochannel. The method comprises providing a microchannel and controlling collapse of the microchannel so that it collapses to form a nanochannel of desired dimensions. The method employs a collapsible, flexible material such as the elastomer polydimethylsiloxane (PDMS) to form the nanochannel. A master is provided that is configured to have geometric conditions that promote a desired frequency of microchannel collapse. A collapsible material having a stiffness that also promotes a desired frequency of microchannel collapse is molded on the master. The molded collapsible material is removed from the master and bonded to a base, thereby forming the microchannel, which then collapses (or is collapsed) to form the nanochannel of desired dimensions. Nanofluidic and microfluidic devices comprising complex nanochannel structures and micro to nanochannel transitions are also provided.
摘要:
Surface enhanced Raman scattering (SERS) substrates may be fabricated using a shadow mask assisted evaporation (SMAE) method to provide for enhanced detection sensitivity with respect to target molecules that are located upon, and sensitized by, the SERS enhanced substrates. Such SERS substrates provide a two dimensional array of repeating nanostructures that may include, but are not limited to nano-pillar, nano-nib, nano-elliptical cylinder and nano-triangular tip nanostructures, any of which may be augmented with gold nanospheres. The particular SERS enhanced substrates in accordance with the embodiments, in particular when augmented with gold nanospheres, provide desirably enhanced sensitivity.