17 Result(s)
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Article
Takeshi Yanagida
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Article
Importance of Bowel Habits in Predicting Inadequate Bowel Preparation: A Prospective Observational Study
Inadequate bowel preparation (BP) negatively affects the efficacy and quality of colonoscopy. Although constipation has already been reported as one of the most important predictors of inadequate BP, there is ...
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Article
Oxide Nanowire Microfluidic Devices for Capturing Single-stranded DNAs
Since DNA analysis is the fundamental process for most applications in biomedical fields, capturing DNAs with high efficiency is important. Here, we used several oxide nanowire microfluidic devices to capture ...
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Photolithographically Constructed Single ZnO Nanowire Device and Its Ultraviolet Photoresponse
A sparse ZnO nanowire array with aspect ratio of ca. 120 and growth rate of 1 μm/h was synthesized by controlling the density of seeds at the initial stage of nanowire growth. The spatially-separated nanowires...
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Open AccessFace-selective tungstate ions drive zinc oxide nanowire growth direction and dopant incorporation
Tailoring the elemental do** of inorganic nanowires remains an important challenge due to complex dopant incorporation pathways. Here we report that the face-selectivity of tungstate ions controls growth dir...
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Open AccessSubstantial Narrowing on the Width of “Concentration Window” of Hydrothermal ZnO Nanowires via Ammonia Addition
A crystal growth of hydrothermal ZnO nanowires essentially requires a concentration control within so-called “concentration window”, where the anisotropic crystal growth of ZnO nanowires preferentially occurs....
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PM2.5 Particle Detection in a Microfluidic Device by Using Ionic Current Sensing
We have demonstrated a PM2.5 analysis method that adds information on the number concentration and size by using microfluidic-based ionic current sensing with a bridge circuit. The bridge circuit allows for suppr...
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Open AccessDiscriminating single-bacterial shape using low-aspect-ratio pores
Conventional concepts of resistive pulse analysis is to discriminate particles in liquid by the difference in their size through comparing the amount of ionic current blockage. In sharp contrast, we herein rep...
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Effect of DNA Methylation on the Velocity of DNA Translocation through a Nanochannel
Here, we report the effect of DNA methylation on the velocity of DNA translocation through a nanochannel, as determined by measuring differences in translocation velocities between methylated and non-methylate...
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Nanostructures Integrated with a Nanochannel for Slowing Down DNA Translocation Velocity for Nanopore Sequencing
Here, we developed a device integrated with a nanochannel and nanostructures to slow DNA translocation velocity. We found that translocation velocity of a single DNA molecule inside a nanochannel was decreased...
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Open AccessA millisecond micro-RNA separation technique by a hybrid structure of nanopillars and nanoslits
A millisecond micro-RNA separation of a mixture of total RNA and genomic DNA, extracted from cultured HeLa cells, was successfully achieved using a hybrid structure of nanopillars and nanoslits contained insid...
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Open AccessAll-nanocellulose nonvolatile resistive memory
Single-use disposable nonvolatile memory devices hold promise for novel applications in internet of everything (IoE) technology by storing the health status of individual humans in daily life. However, convent...
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Open AccessThree-dimensional Nanowire Structures for Ultra-Fast Separation of DNA, Protein and RNA Molecules
Separation and analysis of biomolecules represent crucial processes for biological and biomedical engineering development; however, separation resolution and speed for biomolecules analysis still require impro...
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Self-assembled Nanowire Arrays as Three-dimensional Nanopores for Filtration of DNA Molecules
Molecular filtration and purification play important roles for biomolecule analysis. However, it is still necessary to improve efficiency and reduce the filtration time. Here, we show self-assembled nanowire a...
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Open AccessNanoscale Size-Selective Deposition of Nanowires by Micrometer Scale Hydrophilic Patterns
Controlling the post-growth assembly of nanowires is an important challenge in the development of functional bottom-up devices. Although various methods have been developed for the controlled assembly of nanow...
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Open AccessCellulose Nanofiber Paper as an Ultra Flexible Nonvolatile Memory
On the development of flexible electronics, a highly flexible nonvolatile memory, which is an important circuit component for the portability, is necessary. However, the flexibility of existing nonvolatile mem...
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Open AccessUltrafast and Wide Range Analysis of DNA Molecules Using Rigid Network Structure of Solid Nanowires
Analyzing sizes of DNA via electrophoresis using a gel has played an important role in the recent, rapid progress of biology and biotechnology. Although analyzing DNA over a wide range of sizes in a short time...
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Open AccessScaling Effect on Unipolar and Bipolar Resistive Switching of Metal Oxides
Electrically driven resistance change in metal oxides opens up an interdisciplinary research field for next-generation non-volatile memory. Resistive switching exhibits an electrical polarity dependent “bipola...
