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Graphene — One Atom Thick, Extraordinary Properties
In 2004, Andre Geim and Konstantin Novoselov isolated graphene — a 2D crystal of sp²-hybridised carbon one atom thick (0.335 nm) — by exfoliating graphite with Scotch tape. This material exhibits 130 GPa tensile strength (200× steel), an electron mobility of 200,000 cm²/V·s (100× silicon), and a thermal conductivity of 5,000 W/m·K (10× copper). Nobel Prize in Physics, 2010.
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Superconducting Graphene — Superconductivity Through Geometric Rotation
In 2018, Pablo Jarillo-Herrero's team at MIT discovered that stacking two graphene layers twisted by 1.1° (the "magic angle") produces a superconducting phase at T_c ≈ 1.7 K — without any chemical doping. This ~13 nm moiré pattern creates flat bands where the kinetic energy of electrons becomes negligible, opening the door to geometry-programmable superconductivity.
Hubble — Humanity's Eye Above the Atmosphere
Launched on April 24, 1990, the Hubble Space Telescope orbits at 547 km with a 2.4 m mirror. Angular resolution: 0.05 arcsec — 10× better than ground-based telescopes. 1.5 million observations, 19,000 papers, and the age of the universe measured to within 1%.
Metal 3D Printing by Laser Fusion (SLM) — Building the Impossible Layer by Layer
Selective Laser Melting (SLM) spreads layers of metal powder 20–50 μm thick and fuses them with a 200–1,000 W laser. SpaceX prints the SuperDraco combustion chamber as a single monolithic part.