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Your search keyword '"Ibuki Kawamata"' showing total 2 results
Start Over Author "Ibuki Kawamata" Journal physical chemistry chemical physics : pccp
2 results on '"Ibuki Kawamata"'

1. Unzipping and shearing DNA with electrophoresed nanoparticles in hydrogels

Author

Shin Ichiro M. Nomura, Keitel Cervantes-Salguero, Ibuki Kawamata, and Satoshi Murata

Subjects
Electrophoresis, Dna duplex, Materials science, Base pair, Acrylic Resins, General Physics and Astronomy, Nanoparticle, Metal Nanoparticles, Nanotechnology, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, chemistry.chemical_compound, A-DNA, Physical and Theoretical Chemistry, Composite material, Nucleic Acid Hybridization, Hydrogels, DNA, 021001 nanoscience & nanotechnology, 0104 chemical sciences, chemistry, Colloidal gold, Duplex (building), Self-healing hydrogels, Gold, 0210 nano-technology
Abstract

We show electric control of unzipping and shearing dehybridization of a DNA duplex anchored to a hydrogel. Tensile force is applied by electrophoresing (25 V cm−1) gold nanoparticles pulling the DNA duplex. The pulled DNA strand is gradually released from the hydrogel. The unzipping release rate is faster than shearing; for example, 3-fold for a 15 base pair duplex, which helps to design electrically driven DNA devices.

Published
2017

2. In situ 2D-extraction of DNA wheels by 3D through-solution transport

Author

Jonathan P. Hill, Hirokazu Komatsu, Ibuki Kawamata, Keitel Cervantes-Salguero, Yusuke Yonamine, Kosuke Minami, Waka Nakanishi, Satoshi Murata, and Katsuhiko Ariga

Subjects
In situ, Solutions, chemistry.chemical_compound, Chromatography, chemistry, Chemical engineering, Extraction (chemistry), Cationic polymerization, General Physics and Astronomy, DNA, Physical and Theoretical Chemistry, Hydrophobic and Hydrophilic Interactions
Abstract

Controlled transfer of DNA nanowheels from a hydrophilic to a hydrophobic surface was achieved by complexation of the nanowheels with a cationic lipid (2C12N(+)). 2D surface-assisted extraction, '2D-extraction', enabled structure-persistent transfer of DNA wheels, which could not be achieved by simple drop-casting.

Published
2015

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