Yitzhak Mastai (Hebrew: יצחק מסתאי) is a chemistry professor at Bar Ilan University, specializing in chirality at the nanoscale and in nanotechnology.

in physical chemistry from Bar-Ilan University in 1989, and in 1999, received his PhD from the Weizmann Institute of Science under the supervision of Prof. Gary Hodes on Nanomaterial Synthesis.

He then spent three years as a post-doctoral Fellow at the Max Planck Institute of Colloids and Interfaces, working with both Prof. Markus Antonietti and Prof. Helmut Cölfen on Biomimetic Chemistry and Chiral Polymers.

[2] Mastai is married to Dina von Schwarze-Mastai, a senior clinical psychologist and a distinguished translator of German-Hebrew poetry.

[16] (5) Isothermal Titration Calorimetry (ITC)[17] for the determination of Nanoscale Chirality.