The Experts below are selected from a list of 175467 Experts worldwide ranked by ideXlab platform
Yukui Zhang - One of the best experts on this subject based on the ideXlab platform.
-
novel Hybrid Structure silica cdte molecularly imprinted polymer synthesis specific recognition and quantitative fluorescence detection of bovine hemoglobin
ACS Applied Materials & Interfaces, 2013Co-Authors: Yang Chen, Yukui ZhangAbstract:This work presented a novel strategy for the synthesis of the Hybrid Structure silica/CdTe/molecularly imprinted polymer (Si-NP/CdTe/MIP) to recognize and detect the template bovine hemoglobin (BHb). First, amino-functionalized silica nanoparticles (Si-NP) and carboxyl-terminated CdTe quantum dots (QDs) were assembled into composite nanoparticles (Si-NP/CdTe) using the EDC (1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride) chemistry. Next, Si-NP/CdTe/MIP was synthesized by anchoring molecularly imprinted polymer (MIP) layer on the surface of Si-NP/CdTe through the sol–gel technique and surface imprinting technique. The Hybrid Structure possessed the selectivity of molecular imprinting technique and the sensitivity of CdTe QDs as well as well-defined morphology. The binding experiment and fluorescence method demonstrated its special recognition performance toward the template BHb. Under the optimized conditions, the fluorescence intensity of the Si-NP/CdTe/MIP decreased linearly with the increas...
-
novel Hybrid Structure silica cdte molecularly imprinted polymer synthesis specific recognition and quantitative fluorescence detection of bovine hemoglobin
ACS Applied Materials & Interfaces, 2013Co-Authors: Dongyan Li, Xiwen He, Yang Chen, Wenyou Li, Yukui ZhangAbstract:This work presented a novel strategy for the synthesis of the Hybrid Structure silica/CdTe/molecularly imprinted polymer (Si-NP/CdTe/MIP) to recognize and detect the template bovine hemoglobin (BHb). First, amino-functionalized silica nanoparticles (Si-NP) and carboxyl-terminated CdTe quantum dots (QDs) were assembled into composite nanoparticles (Si-NP/CdTe) using the EDC (1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride) chemistry. Next, Si-NP/CdTe/MIP was synthesized by anchoring molecularly imprinted polymer (MIP) layer on the surface of Si-NP/CdTe through the sol–gel technique and surface imprinting technique. The Hybrid Structure possessed the selectivity of molecular imprinting technique and the sensitivity of CdTe QDs as well as well-defined morphology. The binding experiment and fluorescence method demonstrated its special recognition performance toward the template BHb. Under the optimized conditions, the fluorescence intensity of the Si-NP/CdTe/MIP decreased linearly with the increas...
Ching-ping Wong - One of the best experts on this subject based on the ideXlab platform.
-
Robust vertically aligned carbon nanotube–carbon fiber paper Hybrid as versatile electrodes for supercapacitors and capacitive deionization
Carbon, 2013Co-Authors: Ziyin Lin, Yunnan Fang, Yagang Yao, Kyoung-sik Moon, Ching-ping WongAbstract:Abstract We developed a facile method to transfer vertically aligned carbon nanotubes (VACNT) onto a carbon fiber paper (CFP) substrate using silicone as an adhesion layer. The resulting VACNT–CFP Hybrid Structure displays a very low interface resistance of 0.006 Ω as a result of the Van der Waals interaction at the VACNT–CFP interface. We demonstrated in this work that the VACNT–CFP can be used as a supercapacitor electrode with excellent rate performance and cycling stability, which could be attributed to the vertically alignment and chemical stability of CNTs in the Hybrid Structure. Further, we found that VACNT–CFP showed good resistance to the impact of flowing water when tested as a capacitive deionizer electrode, owing to superior mechanical robustness of the Hybrid Structure.
-
robust vertically aligned carbon nanotube carbon fiber paper Hybrid as versatile electrodes for supercapacitors and capacitive deionization
Carbon, 2013Co-Authors: Ziyin Lin, Yunnan Fang, Yagang Yao, Ching-ping Wong, Kyoung-sik MoonAbstract:Abstract We developed a facile method to transfer vertically aligned carbon nanotubes (VACNT) onto a carbon fiber paper (CFP) substrate using silicone as an adhesion layer. The resulting VACNT–CFP Hybrid Structure displays a very low interface resistance of 0.006 Ω as a result of the Van der Waals interaction at the VACNT–CFP interface. We demonstrated in this work that the VACNT–CFP can be used as a supercapacitor electrode with excellent rate performance and cycling stability, which could be attributed to the vertically alignment and chemical stability of CNTs in the Hybrid Structure. Further, we found that VACNT–CFP showed good resistance to the impact of flowing water when tested as a capacitive deionizer electrode, owing to superior mechanical robustness of the Hybrid Structure.
Jinhong Park - One of the best experts on this subject based on the ideXlab platform.
-
M-DNA/Transition Metal Dichalcogenide Hybrid Structure-based Bio-FET sensor with Ultra-high Sensitivity
Scientific Reports, 2016Co-Authors: Hyung-youl Park, Dongho Kang, Jaeho Jeon, Young Jae Song, Sreekantha Reddy Dugasani, Bramaramba Gnapareddy, Young Jin Jeon, Sung Ha Park, Jinhong ParkAbstract:Here, we report a high performance biosensor based on ( i ) a Cu^2+-DNA/MoS_2 Hybrid Structure and ( ii ) a field effect transistor, which we refer to as a bio-FET, presenting a high sensitivity of 1.7 × 10^3 A/A. This high sensitivity was achieved by using a DNA nanoStructure with copper ions (Cu^2+) that induced a positive polarity in the DNA (receptor). This strategy improved the detecting ability for doxorubicin-like molecules (target) that have a negative polarity. Very short distance between the biomolecules and the sensor surface was obtained without using a dielectric layer, contributing to the high sensitivity. We first investigated the effect of doxorubicin on DNA/MoS_2 and Cu^2+-DNA/MoS_2 nanoStructures using Raman spectroscopy and Kelvin force probe microscopy. Then, we analyzed the sensing mechanism and performance in DNA/MoS_2- and Cu^2+-DNA/MoS_2-based bio-FETs by electrical measurements (I_D-V_G at various V_D) for various concentrations of doxorubicin. Finally, successful operation of the Cu^2+-DNA/MoS_2 bio-FET was demonstrated for six cycles (each cycle consisted of four steps: 2 preparation steps, a sensing step, and an erasing step) with different doxorubicin concentrations. The bio-FET showed excellent reusability, which has not been achieved previously in 2D biosensors.
-
an ultrahigh performance photodetector based on a perovskite transition metal dichalcogenide Hybrid Structure
Advanced Materials, 2016Co-Authors: Dongho Kang, Jaewoo Shim, Jaeho Jeon, Jung Woo Leem, Jae Su Yu, Byungha Shin, Jinhong ParkAbstract:: An ultrahigh performance MoS2 photodetector with high photoresponsivity (1.94 × 10(6) A W(-1) ) and detectivity (1.29 × 10(12) Jones) under 520 nm and 4.63 pW laser exposure is demonstrated. This photodetector is based on a methyl-ammonium lead halide perovskite/MoS2 Hybrid Structure with (3-aminopropyl)triethoxysilane doping. The performance degradation caused by moisture is also minimized down to 20% by adopting a new encapsulation bilayer of octadecyltrichlorosilane/polymethyl methacrylate.
Yang Chen - One of the best experts on this subject based on the ideXlab platform.
-
novel Hybrid Structure silica cdte molecularly imprinted polymer synthesis specific recognition and quantitative fluorescence detection of bovine hemoglobin
ACS Applied Materials & Interfaces, 2013Co-Authors: Yang Chen, Yukui ZhangAbstract:This work presented a novel strategy for the synthesis of the Hybrid Structure silica/CdTe/molecularly imprinted polymer (Si-NP/CdTe/MIP) to recognize and detect the template bovine hemoglobin (BHb). First, amino-functionalized silica nanoparticles (Si-NP) and carboxyl-terminated CdTe quantum dots (QDs) were assembled into composite nanoparticles (Si-NP/CdTe) using the EDC (1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride) chemistry. Next, Si-NP/CdTe/MIP was synthesized by anchoring molecularly imprinted polymer (MIP) layer on the surface of Si-NP/CdTe through the sol–gel technique and surface imprinting technique. The Hybrid Structure possessed the selectivity of molecular imprinting technique and the sensitivity of CdTe QDs as well as well-defined morphology. The binding experiment and fluorescence method demonstrated its special recognition performance toward the template BHb. Under the optimized conditions, the fluorescence intensity of the Si-NP/CdTe/MIP decreased linearly with the increas...
-
novel Hybrid Structure silica cdte molecularly imprinted polymer synthesis specific recognition and quantitative fluorescence detection of bovine hemoglobin
ACS Applied Materials & Interfaces, 2013Co-Authors: Dongyan Li, Xiwen He, Yang Chen, Wenyou Li, Yukui ZhangAbstract:This work presented a novel strategy for the synthesis of the Hybrid Structure silica/CdTe/molecularly imprinted polymer (Si-NP/CdTe/MIP) to recognize and detect the template bovine hemoglobin (BHb). First, amino-functionalized silica nanoparticles (Si-NP) and carboxyl-terminated CdTe quantum dots (QDs) were assembled into composite nanoparticles (Si-NP/CdTe) using the EDC (1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride) chemistry. Next, Si-NP/CdTe/MIP was synthesized by anchoring molecularly imprinted polymer (MIP) layer on the surface of Si-NP/CdTe through the sol–gel technique and surface imprinting technique. The Hybrid Structure possessed the selectivity of molecular imprinting technique and the sensitivity of CdTe QDs as well as well-defined morphology. The binding experiment and fluorescence method demonstrated its special recognition performance toward the template BHb. Under the optimized conditions, the fluorescence intensity of the Si-NP/CdTe/MIP decreased linearly with the increas...
Jaeho Jeon - One of the best experts on this subject based on the ideXlab platform.
-
epitaxial synthesis of molybdenum carbide and formation of a mo2c mos2 Hybrid Structure via chemical conversion of molybdenum disulfide
ACS Nano, 2018Co-Authors: Jaeho Jeon, Yereum Park, Seunghyuk Choi, Young Jae Song, Yun Hee JangAbstract:The epitaxial synthesis of molybdenum carbide (Mo2C, a 2D MXene material) via chemical conversion of molybdenum disulfide (MoS2) with thermal annealing under CH4 and H2 is reported. The experimental results show that adjusting the thermal annealing period provides a fully converted metallic Mo2C from MoS2 and an atomically sharp metallic/semiconducting Hybrid Structure via partial conversion of the semiconducting 2D material. Mo2C/MoS2 Hybrid junctions display a low contact resistance (1.2 kΩ·μm) and low Schottky barrier height (26 meV), indicating the material’s potential utility as a critical Hybrid structural building block in future device applications. Density functional theory calculations are used to model the mechanisms by which Mo2C grows and forms a Mo2C/MoS2 Hybrid Structure. The results show that Mo2C conversion is initiated at the MoS2 edge and undergoes sequential hydrodesulfurization and carbide conversion steps, and an atomically sharp interface with MoS2 forms through epitaxial growth of ...
-
M-DNA/Transition Metal Dichalcogenide Hybrid Structure-based Bio-FET sensor with Ultra-high Sensitivity
Scientific Reports, 2016Co-Authors: Hyung-youl Park, Dongho Kang, Jaeho Jeon, Young Jae Song, Sreekantha Reddy Dugasani, Bramaramba Gnapareddy, Young Jin Jeon, Sung Ha Park, Jinhong ParkAbstract:Here, we report a high performance biosensor based on ( i ) a Cu^2+-DNA/MoS_2 Hybrid Structure and ( ii ) a field effect transistor, which we refer to as a bio-FET, presenting a high sensitivity of 1.7 × 10^3 A/A. This high sensitivity was achieved by using a DNA nanoStructure with copper ions (Cu^2+) that induced a positive polarity in the DNA (receptor). This strategy improved the detecting ability for doxorubicin-like molecules (target) that have a negative polarity. Very short distance between the biomolecules and the sensor surface was obtained without using a dielectric layer, contributing to the high sensitivity. We first investigated the effect of doxorubicin on DNA/MoS_2 and Cu^2+-DNA/MoS_2 nanoStructures using Raman spectroscopy and Kelvin force probe microscopy. Then, we analyzed the sensing mechanism and performance in DNA/MoS_2- and Cu^2+-DNA/MoS_2-based bio-FETs by electrical measurements (I_D-V_G at various V_D) for various concentrations of doxorubicin. Finally, successful operation of the Cu^2+-DNA/MoS_2 bio-FET was demonstrated for six cycles (each cycle consisted of four steps: 2 preparation steps, a sensing step, and an erasing step) with different doxorubicin concentrations. The bio-FET showed excellent reusability, which has not been achieved previously in 2D biosensors.
-
an ultrahigh performance photodetector based on a perovskite transition metal dichalcogenide Hybrid Structure
Advanced Materials, 2016Co-Authors: Dongho Kang, Jaewoo Shim, Jaeho Jeon, Jung Woo Leem, Jae Su Yu, Byungha Shin, Jinhong ParkAbstract:: An ultrahigh performance MoS2 photodetector with high photoresponsivity (1.94 × 10(6) A W(-1) ) and detectivity (1.29 × 10(12) Jones) under 520 nm and 4.63 pW laser exposure is demonstrated. This photodetector is based on a methyl-ammonium lead halide perovskite/MoS2 Hybrid Structure with (3-aminopropyl)triethoxysilane doping. The performance degradation caused by moisture is also minimized down to 20% by adopting a new encapsulation bilayer of octadecyltrichlorosilane/polymethyl methacrylate.
