In conventional quantum beam measurement, effective measurement has been achieved by acquiring tacit knowledge through human skills such as intuition, knack, and experience. Our goal is to formulate the tacit knowledge of skilled experts from the viewpoint of optimization through informatics to realize rational measurement and analysis and to enhance the value of quantum beam measurement. This review will introduce new measurement and analysis methods by utilizing informatics to enhance the efficiency and optimization of quantum beam measurement. The widespread use of optimized measurement and analysis will improve the reliability of measurement and analysis and accelerate research in a wide range of natural science fields.

Water confined within hydrophobic nanochannels has intrigued researchers due to its unique properties. Carbon nanotubes are commonly used models, but their poor crystallinity and electron conduction hinder direct observation of water’s structure and proton transport. This article presents our recent work on the observation of water-cluster formation and high proton conduction within a hydrophobic channel of a metal-organic nanotube. Inside the hydrophobic nanochannel, we find a crystalline hydrogen-bonded ice nanotube. Impedance measurements show substantial proton conduction and solid-state ¹H-NMR measurements confirm rapid proton diffusion and continuous liquid-to-solid transition. This research illuminates confined water’s unique structural and dynamic properties.

Separation technology of organic compounds using mesoporous materials has been widely used in the fields of analytical chemistry, pharmacy, and engineering. Characterizing of the hydration state of solute in a confined solution is necessary to improve the separation and purification technology using pores. In the present study, differential scanning calorimetry, X-ray diffraction, and quasi-elastic neutron scattering（QENS）measurements of aqueous glycine solutions confined in mesoporous silica（MCM-41）showed that glycine molecules locate near the pore surface of MCM-41 due to the formation of hydrogen bonding between glycine molecules and the silanol group of the MCM-41 wall at pH＝5. It is in contrast to the case at pH＝2.

The catalyst layer in polymer electrolyte fuel cells plays a critical role in the performance of a PEFC. However, water dynamics in the catalyst layer have not been sufficiently reported so far and are not fully understood yet. In this work, we investigate the water dynamics in the CL using quasi-elastic neutron scattering and small-angle neutron scattering. The QENS measurements established three kinds of water in the CL：immobile water tightly connected to a sulfonic group, water in a fast mode assigned to free diffusion restricted in a sphere, and water in a slow mode described by a jump-diffusion model.

Dioleyldimethylammonium ion was used to construct hybrid with a clay（a bentonite）and the hybrid was shown to possess higher flexibility than that of the hybrid of dioctadecyldimethylammonium and the clay. The difference between the two hybrids was studied by molecular probe and quasi-elastic neutron scattering. The useful characteristics of the dioleyldimethylammonium-clay as a new class of materials for host-guest systems with versatile application were suggested.

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