Hideo Shimoda

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Carbon nanotubes (CNTs) [1, 2] have dimensions similar to those of typical polymeric chains, with 1-50nm in diameter and 1-10µm in length. Experimental results on individual carbon nanotubes and nanotube bundles show that they have exceptional electrical and mechanical properties with an elastic modulus of ~1TPa and fracture strain of 5-10%. [3] The thermal(More)
X-ray radiation is widely used in medical and industrial applications. The basic design of the x-ray tube has not changed significantly in the last century. In this paper, we demonstrate that medical diagnostic x-ray radiation can be generated using a carbon nanotube (CNT) based field-emission cathode. The device can readily produce both continuous and(More)
Introduction: Ureilitic meteorites are ultramafic rocks with highly depleted REE abundance, while showing primitive signatures, such as abundant noble gases and oxygen isotopic heterogeneities. A lack of basaltic components among ureilitic meteorites is the major cause of our poor understanding of their evolution. Especially, chronological studies of(More)
In this Account, we summarize some of our recent studies on the materials properties of the carbon nanotubes (CNTs). The focus is on single-wall carbon nanotubes (SWNTs). We describe experiments on synthesis of SWNTs with controlled molecular structures and assembly of functional macroscopic structures. In addition, we present results on the electron field(More)
Carbon nanotubes (CNT) possess many unique characteristics that promise to revolutionize the world of structural materials resulting in significant impact on our capability to build lighter, smaller and higher performance structures for aerospace and many other industrial applications. When the CNT are aligned, micromechanical studies showed the potential(More)
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