A New Definition of Diamond, Born in Alishan
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Company Profile
Alishan Diamond’s product range includes gem-quality rough diamonds, CVD seed crystals, tool blanks, diamond substrates, window plates, copper-diamond composite plates, and patterned diamonds. These products are widely used in semiconductor package thermal management, laser and optoelectronic systems, quantum technology, precision tools, aerospace and defense, as well as medical and jewelry applications.
2026-08-24 Read
2026 semicon Taiwan
Exhibition venue: Taipei Nangang Exhibition Center, Hall 1 | No. 1, Jingmao 2nd Rd., Nangang District, Taipei City 115, Taiwan Booth: I3222
Exhibition dates: 2026/09/02 (Wed) to 2026/09/04 (Fri) Exhibition hours: 10:00-17:00
Introduction to Diamond Properties
Diamond is a crystal formed by carbon atoms joined by sp³ covalent bonds. Although its elemental composition appears simple, it gives rise to a range of physical and chemical properties that are virtually unmatched in nature. For this reason, diamond has long surpassed its role as a jewelry material and has become a critical material for advanced industries such as semiconductors, optoelectronics, and precision manufacturing. The following overview introduces diamond’s unique characteristics from several key perspectives.
2026-08-24 Read
Diamond Thermal Management Principles
Diamond has one of the highest thermal conductivities among known solid materials. The key lies in its unique crystal structure and atomic bonding. Unlike metals, which rely on “free electrons” to conduct heat, diamond is an electrical insulator with almost no free electrons. Heat is conducted primarily by “phonons”—energy fluctuations generated by lattice-atom vibrations—which travel rapidly through the crystal lattice.
2026-08-21 Read
Q & A
Diamond, also known as adamant, is primarily composed of carbon and often contains small amounts of silicon, aluminum, calcium, magnesium, iron, nitrogen, or boron. Diamond belongs to the cubic crystal system. Each carbon atom forms strong covalent bonds with four other carbon atoms, creating a crystal structure composed of octahedral frameworks of carbon atoms. It is exceptionally hard, with a Mohs hardness of 10—the hardest naturally occurring substance and rightly known as the “king of hardness.”
2026-08-03 Read