Abstract: Provided is a field-effect transistor that can reduce noise, be produced by a simplified manufacturing method, and also have a plurality of active patterns and gate patterns designed to be combinable according to a detection purpose. The field-effect transistor includes a lower silicon layer and a buried oxide layer disposed on the lower silicon layer; an active pattern disposed on the buried oxide layer and including a channel region, a source region, and a drain region; a gate pattern disposed on the active pattern to at least partially overlap the active pattern; a source electrode disposed in direct contact with the source region on the active pattern, and a drain electrode disposed in direct contact with the drain region on the active pattern; and a gate insulating film disposed between the active pattern and the gate pattern.

Abstract: Provided is a peptide including X2SX1AAX2X3P (SEQ ID NO. 1), X2X2PX3X2AX3P (SEQ ID NO. 2), SX1AAX2X3P (SEQ ID NO. 3), or X2PX3X2AX3P (SEQ ID NO. 4), which bind to graphitic materials or volatile organic compounds.

Abstract: An apparatus for sensing biomolecules includes: a storage in which a solution containing a target material is received; a sensor configured to sense the target material; and a flow controller connected between the storage and the sensor to supply the solution to the sensor, wherein the flow controller controls a solution flow to supply the solution containing the target material and the solution containing no target material in an alternating manner. According to the apparatus for sensing biomolecules, the sensing device always achieves a sensing offset, and consequently, long-term continuous measurement is enabled, leading to the maximized usage efficiency of the sensor, and the value of quantitative measurement can be obtained with high precision.

Abstract: A highly sensitive carbon-nanomaterial-based gas sensor for use in high-humidity environments and a method of improving the sensitivity thereof, the gas sensor being configured such that a functional group for binding to a water molecule is formed on the surface of a first detector composed of a carbon nanomaterial, whereby a hydronium ion (H3O+) is produced and thus an additional ion conduction path is formed, thereby obtaining an additional reaction path in high-humidity environments, ultimately improving the sensitivity and detection threshold of the sensor. The gas sensor includes a substrate, a first detector disposed on the substrate, electrodes electrically connected to the first detector, and a second detector disposed on the first detector, wherein the second detector has a hydrophilic functional group.

Abstract: This invention relates to a nucleic acid aptamer specifically binding to avian influenza virus subtype H5 and a method of detecting avian influenza virus subtype H5 using the same, and more particularly to a method of detecting avian influenza virus subtype H5, which is able to rapidly check the presence and concentration of avian influenza virus subtype H5 using a nucleic acid aptamer specifically binding to hemagglutinin, which is a surface protein of avian influenza virus subtype H5.

Abstract: A porous matrix according to the present disclosure, wherein a nucleic acid primer-carbon material composite in which one or more nucleic acid primer of a forward primer and a reverse primer as a polymerase chain reaction (PCR) primer is bound to a carbon material is included in the pores of the matrix, provides improved amplification efficiency as compared to a matrix wherein the nucleic acid primer is present on the outer surface of the matrix or a porous matrix wherein the nucleic acid primer is directly fixed inside pores. The porous matrix of the present disclosure can effectively detect various kinds of target nucleic acids simultaneously and analyze them in real time by varying the kinds of the nucleic acid primers included in the matrix. Therefore, it is useful in amplifying multiple nucleic acids.

Abstract: Provided is a peptide selectively binding to a volatile organic compound, in which the peptide has excellent selectivity for the volatile organic compound and has stability at room temperature so as to effectively collect and detect or eliminate the volatile organic compound.

Abstract: According to one embodiment, a physical quantity measuring apparatus includes a signal measurer configured to include sensors configured to measure component values of two axes from among component values of three axes including an X(Hx), a Y(Hy) and a Z(Hz) measured component value of a physical quantity to be measured, a sensor controller configured to select one from among the sensors to be controlled to output a measured value from the selected sensor, an A/D transformer configured to transform an outputted signal selected by the sensor control unit into a digital signal, and a signal processor configured to receive the digital signal from the A/D transformer and to combine the received digital signal with other received digital signals to calculate X, Y and Z component values of the physical quantity.

Abstract: A porous structure according to the present invention has a polymerase chain reaction (PCT) primer inside pores thereof, and hence, even an inner portion thereof can be used unlike general structures of which only surfaces are used for amplification and detection, thereby maximizing reactivity. In addition, the differentiating of the kinds of primers contained in respective structures leads to detection of several kinds of target nucleic acids at the same and real-time analysis thereof at the same time, and thus is useful for multiplex real-time PCR.

Abstract: The present invention relates to a method for producing porous carbon materials comprising the following steps: (S1) forming carbon coatings on surfaces of ceramic nanoparticles; (S2) mixing carbon precursors and ceramic nanoparticles on which carbon coatings are formed in the step (S1); (S3) heat-treating the mixture of the ceramic nanoparticles having carbon coatings thereon and carbon precursors, prepared in the step (S2) to carbonize the mixture; and (S4) removing the ceramic nanoparticles from the material obtained in the step (S3). The method for producing porous carbon materials according to the present invention enables porous carbon materials in which mesopores are uniformly distributed, to be mass produced with low costs. The porous carbon materials having mesopores may be used as catalyst supports for fuel cells, and thus may be used in producing electrodes for fuel cells.

Abstract: Provided is a peptide selectively binding to a volatile organic compound, in which the peptide has excellent selectivity for the volatile organic compound and has stability at room temperature so as to effectively collect and detect or eliminate the volatile organic compound.

Abstract: Provided is a peptide including X2SX1AAX2X3P (SEQ ID NO. 1), X2X2PX3X2AX3P (SEQ ID NO. 2), SX1AAX2X3P (SEQ ID NO. 3), or X2PX3X2AX3P (SEQ ID NO. 4), which bind to graphitic materials or volatile organic compounds.

Abstract: The present invention provides a method of fabricating gold nanoparticles using electroless displacement plating, the method including the steps of: depositing on a substrate a metal having a reduction potential lower than that of gold to form a metal layer; and reacting a gold ion-containing plating solution with the metal layer. The invention also provides gold nanoparticles fabricated by the method. According to the method, gold nanostructures can be fabricated in a simple, cost-effective and efficient manner, and the fabricated gold nanoparticles can be used to measure surface-enhanced Raman scattering (SERS) signal or fluorescence. In addition, the invention enables the development of an optical sensor including the gold nanostructures.

Abstract: Disclosed are a method for detecting a biomolecule including: immobilizing a nucleic acid aptamer capable of specifically binding to a biomolecule to be detected on the surface of a bead on which fluorophores are arranged; hybridizing the nucleic acid aptamer with a guard nucleic acid (g-nucleic acid) labeled with a quencher to quench fluorescence; and reacting a sample including the biomolecule to be detected with the nucleic acid aptamer and detecting a fluorescence signal emitted as the biomolecule binds with the nucleic acid aptamer and the g-nucleic acid labeled with the quencher is separated, and a device for detecting a biomolecule for conducting the detection method. The present disclosure allows for effective, convenient and fast detection of the biomolecule to be detected, enables quantitative analysis, and enables detection of even a trace amount of sample.

Abstract: The present invention relates to a method for producing porous carbon materials comprising the following steps: (S1) forming carbon coatings on surfaces of ceramic nanoparticles; (S2) mixing carbon precursors and ceramic nanoparticles on which carbon coatings are formed in the step (S1); (S3) heat-treating the mixture of the ceramic nanoparticles having carbon coatings thereon and carbon precursors, prepared in the step (S2) to carbonize the mixture; and (S4) removing the ceramic nanoparticles from the material obtained in the step (S3). The method for producing porous carbon materials according to the present invention enables porous carbon materials in which mesopores are uniformly distributed, to be mass produced with low costs. The porous carbon materials having mesopores may be used as catalyst supports for fuel cells, and thus may be used in producing electrodes for fuel cells.

Abstract: The present invention provides a method of fabricating gold nanoparticles using electroless displacement plating, the method including the steps of: depositing on a substrate a metal having a reduction potential lower than that of gold to form a metal layer; and reacting a gold ion-containing plating solution with the metal layer. The invention also provides gold nanoparticles fabricated by the method. According to the method, gold nanostructures can be fabricated in a simple, cost-effective and efficient manner, and the fabricated gold nanoparticles can be used to measure surface-enhanced Raman scattering (SERS) signal or fluorescence. In addition, the invention enables the development of an optical sensor including the gold nanostructures.

Abstract: Disclosed is a method for producing a polymer-based microfluidic device, including: forming a microstructure on a lower polymer matrix; coating the lower polymer matrix with TiO2 to perform patterning of TiO2; bonding the lower polymer matrix with an upper polymer matrix; and radiating UV lights thereto to convert TiO2-coated regions into hydrophilic regions. Disclosed also is a polymer-based microfluidic device obtained by the method. The method enables development of a microfluidic device having high stability and long-term durability.

Abstract: Disclosed are a method for detecting a biomolecule including: immobilizing a nucleic acid aptamer capable of specifically binding to a biomolecule to be detected on the surface of a bead on which fluorophores are arranged; hybridizing the nucleic acid aptamer with a guard nucleic acid (g-nucleic acid) labeled with a quencher to quench fluorescence; and reacting a sample including the biomolecule to be detected with the nucleic acid aptamer and detecting a fluorescence signal emitted as the biomolecule binds with the nucleic acid aptamer and the g-nucleic acid labeled with the quencher is separated, and a device for detecting a biomolecule for conducting the detection method. The present disclosure allows for effective, convenient and fast detection of the biomolecule to be detected, enables quantitative analysis, and enables detection of even a trace amount of sample.

Abstract: Disclosed herein is an Active Matrix Organic Light-Emitting-Diode (AMOLED) drive circuit using transient current feedback. The AMOLED drive circuit includes a current Digital-to-Analog Converter (DAC), a data line drive transistor, a constant current source, a variable current source, a differential amplifier, and a transient charging current control unit. The DAC generates current corresponding to input digital data. The data line drive transistor is configured such that the drain terminal thereof is connected to the output node of the current DAC. The constant current source is connected between the source terminal of the data line drive transistor and a ground. The variable current source is connected between both the output node of the current DAC and the drain terminal of the drive transistor, and a voltage source. The differential amplifier is configured to input the output voltage thereof to the gate terminal of the drive transistor.

Abstract: Disclosed is a method for producing a polymer-based microfluidic device, including: forming a microstructure on a lower polymer matrix; coating the lower polymer matrix with TiO2 to perform patterning of TiO2; bonding the lower polymer matrix with an upper polymer matrix; and radiating UV lights thereto to convert TiO2-coated regions into hydrophilic regions. Disclosed also is a polymer-based microfluidic device obtained by the method. The method enables development of a microfluidic device having high stability and long-term durability.