Yoshiaki Araki

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In this paper, we introduce the design and implementation of VSPLUS, a high-level multiuser extension library to enable people to simultaneously manipulate interactive VRML worlds over networks. The key consideration of the VSPLUS design is the ease of creations of multiuser worlds from single-user standard VRML worlds without extensive programming efforts.(More)
The concept of band engineering dilute nitride semiconductors into nanowires is introduced. Using plasma-assisted molecular beam epitaxy, dilute nitride GaAsN/GaAs heterostructure nanowires are grown on silicon (111) substrates. Growth of the nanowires under high As overpressure results in a regular wire diameter of 350 nm with a length exceeding 3 μm. The(More)
In this paper, we investigate the common unfolding between regular tetrahedra and Johnson-Zalgaller solids. More precisely, we investigate the sets of all edge developments of Johnson-Zalgaller solids that fold into regular tetrahedra. We show that, among 92 Johnson-Zalgaller solids, only J17 (gyroelongated square dipyramid) and J84 (snub disphenoid) have(More)
Let Γ be a 3-dimensional Kleinian punctured torus group with accidental parabolics. The deformation space of Γ in the group of Möbius transformations on the 2-sphere is well-known as the Maskit slice of punctured torus groups. In this paper, we study the deformation space of Γ in the group of Möbius transformations on the 3-sphere, where Γ is naturally(More)
This paper reports experiments of materializing recent new discovered mathematical surfaces, 3D quasi-Fuchsian fractals. Three different models in glass, plastic, and metal are created to realize rich mathematical properties including self-similarity, 3-embeddable, simply-connected, and complicated surface consisting of infinite number of cusps. Different(More)
Let Γ be a 3-dimensional Kleinian punctured torus group with accidental parabolic transformations. The deformation space of Γ in the group of Möbius transformations on the 2-sphere is well-known as the Maskit slice M 1,1 of punctured torus groups. In this paper, we study deformations Γ ′ of Γ in the group of Möbius transformations on the 3-sphere such that(More)
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