The future technical development of flexible waveguides will focus on the following specific directions and goals:
Material innovation and optimization
In the future, the focus will be on developing new high-performance materials to improve flexible waveguide and transmission efficiency. For example, the application of polyimide substrates has shown excellent low-temperature adaptability in LNG storage tanks; at the same time, the research on polymers and nanocomposites is also promoting the demand for wide-spectrum transmission.
Intelligence and multifunctional integration
Intelligence is one of the core directions for future development. For example, the self-diagnosis function can automatically identify faults by analyzing the characteristics of the reflected waveform; in addition, the multifunctional integrated platform will combine sensing functions and other optical components to achieve more complex applications.
High-frequency and low-loss transmission
The development of high-frequency microwave technology requires lower loss performance and supports higher frequency bands such as E-band (60GHz to 90GHz) and V-band (50GHz to 75GHz); at the same time, optimizing the refractive index contrast to reduce the loss caused by mode coupling is also an important goal.
Miniaturization and lightweight design
Miniaturization design makes products more compact lightweight and adaptable to complex spatial layouts. For example, thin and flexible waveguides have been successfully used in neuroscience. In addition, miniaturized head-fixed microscopes also show great potential.
Environmental sustainability
Environmental protection has become one of the important considerations; the use of recyclable or degradable materials not only reduces waste but also promotes green and sustainable development; eco-friendly piezoelectric films such as silk aloe composite piezoelectric films are also being explored.
Interdisciplinary integration and innovation
Interdisciplinary integration promotes technological progress; for example, combining two-dimensional material epitaxial growth technology to manufacture various logic circuits and develop nanogenerators to convert bending energy into electrical energy; At the same time, liquid crystal elastomers show great potential in multi-stimulus responsive soft actuators and other aspects.
Market expansion and diversification of application scenarios
With the growth of market demand, it has expanded to more fields such as biomedical environmental monitoring, smart home security monitoring, etc.
In particular, flexible waveguide plays an important role in aerospace radar systems, satellite communications, military defense, and other fields.
In summary, in the future, flexible waveguide technology will be fully upgraded and widely used in various industries through new materials, intelligent functions, high frequency, low consumption, micro-environmental protection, interdisciplinary integration, and market expansion.
Reference:
1. IEEE International Flexible Electronics Technology Conference (IFETC) 2024. IEEE. [2024-09-01]
2. Information Sciences. SCIENCE CHINA. [2024-06-01]
3. Chinese Journal of Liquid Crystals and Displays. [2024-12-01]
4. B. J. Barros, João P. S. Cunha. "Neurophotonics: a comprehensive review, current challenges and future trends." Frontiers in Neuroscience(2024).. TYPEReview.