by Misha Shalaginov, Michael Dubrovsky, Xinghui Yin
Technical interviews with the greatest scientists in the world.
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🇺🇲
Publishing Since
2/21/2022
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April 14, 2025
<p>In this episode of the 632nm podcast, we explore how 193nm lasers unexpectedly overtook x-ray approaches and reshaped semiconductor manufacturing. Our guest describes the breakthroughs that turned a once “impossible” technology into the mainstay of chip fabrication, including the discovery of specialized lenses, the invention of chemically amplified resists, and the game-changing flip to immersion lithography. We also hear candid insights on the race to push below 13.5 nanometers, where new ideas in plasma sources and advanced coatings might one day carry Moore’s Law even further.</p><p><strong>Follow us:</strong></p><p>Twitter: <a href="https://x.com/632nmPodcast">https://x.com/632nmPodcast</a></p><p>Substack: <a href="https://632nmpodcast.substack.com/">https://632nmpodcast.substack.com/</a></p><p>Michael Dubrovsky: <a href="https://x.com/MikeDubrovsky">https://x.com/MikeDubrovsky</a></p><p>Misha Shalaginov: <a href="https://x.com/MYShalaginov">https://x.com/MYShalaginov</a></p><p>Xinghui Yin: <a href="https://x.com/XinghuiYin">https://x.com/XinghuiYin</a></p><p><strong>Subscribe:</strong></p><p>Apple Podcasts: <a href="https://podcasts.apple.com/us/podcast/632nm/id1751170269">https://podcasts.apple.com/us/podcast/632nm/id1751170269</a></p><p>Spotify: <a href="https://open.spotify.com/show/4aVH9vT5qp5UUUvQ6Uf6OR">https://open.spotify.com/show/4aVH9vT5qp5UUUvQ6Uf6OR</a></p><p>Website: <a href="https://www.632nm.com/">https://www.632nm.com/</a></p>
April 1, 2025
<p>In this episode, physicist Federico Capasso recounts his winding path from struggling undergrad to pioneering inventor of the quantum cascade laser. He reveals how openness, daring ideas, and the bottom-up ethos at Bell Labs led to breakthroughs that redefined semiconductor research.</p><p>Capasso also discusses the blurred lines between basic and applied science, the importance of nurturing curiosity, and the serendipitous moments that propelled his career. From avalanche photodiodes to metasurfaces to quantum biology, he offers a fascinating look at how big discoveries often begin with a simple spark of wonder.</p>
March 14, 2025
<p>Eli Yablonovitch shares how Thomas Edison's approach of requiring "a thousand failed discoveries for every one that works" shaped his scientific philosophy. From solar cells to semiconductor lasers to photonic crystals to cell phone antennas, Yablonovitch reveals how each invention evolved from identifying fundamental physics concepts that others overlooked. He explains how his light-trapping concept now used in every solar panel stemmed from thinking about statistical mechanics. His strained semiconductor laser design, which initially faced industry resistance, eventually became the standard in all laser pointers and DVDs. Throughout his career spanning Bell Labs, Exxon, and academia, Yablonovitch demonstrates that true innovation comes from understanding basic physics principles and having the courage to pursue ideas others dismiss as impossible.</p>
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