This is the second volume in a comprehensive two-volume set, 'Advances in Quantum Science', whose first volume is 'Advances in Quantum Science I: Theoretical and Methodological Approaches'. The volume concentrates on artificial intelligence and computational chemistry relating to advanced materials and molecular systems, integrating experimental studies. The initial part addresses machine learning for the optimisation of parameters in density functional theory, and the introduction of curvature in differential geometry to molecular systems. Newly artificial intelligence method, which predicts pharmaceutical and molecular properties, is developed. In Part II, the superconductivity of iron-based materials is explored, focusing on Mössbauer spectroscopy. It elucidates atom adsorption and structural characterization in nanomaterials, as well as discussing thermal storage materials.  In Parts III and IV, molecular properties are examined through quantum chemical computations to elucidate photodissociation, and intermolecular interactions. Molecular simulations for proteins are demonstrated. Part V presents quantum phenomena in advanced materials through experimental observations, discussing spin-to-charge conversion and hydrogen diffusion in condensed matter.  Assembly processes and photo-physics are explained in porphyrin organisation. Scanning tunnelling microscopy techniques are demonstrated alongside image data. The synthesis and characterisation are explained for photonic crystals and protein-metal complexes. The introduction of molecular beam techniques is followed by a discussion on molecular collisions. This book aims to assist researchers in electron studies by providing insights to initiate pioneering research.

Taku Onishi is a Japanese quantum scientist. He graduated from Faculty of Science, Osaka University, Japan in 1998, and gained his Ph.D. from Department of Chemistry, Osaka University, Japan in 2003. He got a permanent position at Faculty of Engineering, Mie University, Japan in 2003. He has been a guest researcher for Department of Chemistry, University of Oslo, Norway since 2010. He was entitled to a visiting professor at University of the Ryukyus, Japan in 2021.  His research covers a variety of research fields such as quantum chemistry, quantum physics, material science and applied mathematics. He has experiences of publishing four Springer books: (1) Quantum Computational Chemistry- Modelling and Calculation for Functional Materials (Monograph, 2018), (2) Theoretical Chemistry for Advanced Nanomaterials- Functional Analysis by Computation and Experiment (Editor, 2020), (3) Ferroelectric Perovskites for High-Speed Memory-A Mechanism Revealed by Quantum Bonding Motion (Monograph,2022), (4) Quantum Science-The Frontier of Physics and Chemistry (Editor,2022).  He is a chair of Quantum Science symposium in renowned ICCMSE conference.