Flexible Inorganic Nanofibers: Mechanisms, Regulation Strategies, and Evaluation Methods

Area of Science:

• Materials Science
• Nanotechnology
• Interdisciplinary Science

Background:

• Flexible inorganic nanofibers combine inorganic material stability with nanoscale flexibility.
• They show promise in thermal insulation, optoelectronics, catalysis, and biomedicine.
• Current understanding of their flexibility is limited, hindering precise design and industrial use.

Purpose of the Study:

• To systematically review the intrinsic mechanisms behind the flexibility of inorganic nanofibers.
• To elucidate a logical framework for constructing flexible inorganic materials.
• To provide theoretical support for high-performance design and application breakthroughs.

Main Methods:

• Review of intrinsic mechanisms: defect regulation, dynamic interfacial regulation, surface atomic reconstruction, and microscopic bond distortion.
• Elucidation of a construction framework: nanoscale surface/interface effects, intrinsic mechanisms, and multi-scale regulation.
• Summarization of core regulation strategies: intrinsic structure tailoring and interfacial engineering modulation.
• Overview of current flexibility evaluation and testing methods.

Main Results:

• Identified four intrinsic mechanisms governing nanofiber flexibility.
• Proposed a framework for constructing flexible materials based on nanoscale effects and intrinsic mechanisms.
• Summarized key strategies for flexibility regulation and evaluation.

Conclusions:

• An integrated "mechanism-regulation-evaluation" framework is proposed for flexible inorganic nanofibers.
• This framework aims to guide high-performance design and application breakthroughs.
• Future directions include interdisciplinary integration, advanced in situ characterization, and standardized evaluation systems.