Finally, a Si triangular pyramidal needle was fabricated by photolithography and anisotropic TMAH (25.0 wt.%, 70°C) wet etching. The height of the needle was 0.1 mm. It is clear that the vertex of the ...

“Bille” is the first-ever monostable tetrahedron, or a pyramid-like shape with four triangular faces that has one stable ...

While the Grand Egyptian Museum hasn’t officially opened yet, it has been opening in stages over the last two years. Here’s ...