In order to enhance the detection capabilities of large-area detectors operating at room temperature, particularly in terms of response time and sensitivity parameters, we have developed an innovative terahertz detector featuring bowtie arrays based on projection micro stereolithography (PμSL). This device integrates the localized surface plasma effect of non-microcavities with the exceptional properties of Weyl semimetal materials within its sub-wavelength structure. To further investigate the detection performance and improve the response time, we have employed a laser field to enhance the surface carrier mobility of the device, thereby enhancing its detection capabilities. At room temperature, the terahertz sensitivity for 0.1 THz has been enhanced from 0.30 MV/W to 0.54 MV/W, representing an 80 % improvement, while the noise equivalent power (NEP) has been reduced from 92 pW/Hz ^1/2 to 50 pW/Hz ^1/2 , marking 45.6% improvement. The response time of the device under external field stimulation is 50 ms. Given the ease and high reproducibility of the ultra-high resolution 3D printing for fabricating microstructures and the straightforward crystallization of WTe ₂ magnetron sputtered thin films, our proposed high-performance terahertz wave photodetector scheme holds promise for effective terahertz wave detection, with potential applications in the realms of 6G communication and terahertz radar.

Terahertz (THz) waves, situated between the infrared and microwave regions, possess distinctive properties such as non-contact, high penetration, and high resolution. These properties render them highly advantageous for non-destructive thickness measurement of multilayer structural materials. In comparison with conventional ultrasound or X-ray techniques, THz thickness measurement has the capacity to acquire thickness data for multilayer structures without compromising the integrity of the specimen and is characterized by its environmental sustainability. The extant THz thickness measurement techniques principally encompass time-domain spectroscopy, frequency-domain spectroscopy, and model-based inversion and deep learning methods. A variety of methodologies have been demonstrated to possess complementary advantages in addressing subwavelength-scale thin layers, overlapping multilayer interfaces, and complex environmental interferences. These methodologies render them suitable for a range of measurement scenarios and precision requirements. A wide range of technologies related to this field have been applied in various disciplines, including aerospace thermal barrier coating inspection, semiconductor process monitoring, automotive coating quality assessment, and oil film thickness monitoring. The ongoing enhancement in system integration and continuous algorithm optimization has led to significant advancements in THz thickness measurement, propelling it towards high resolution, real-time performance, and intelligence. This development offers a wide range of engineering applications with considerable potential for future growth and innovation.

Immersive glasses-free display technologies provide stereoscopic visual experience for multiple users without the requirement of specialized glasses. By accurately customizing light fields, stereoscopic display can replicate realistic three-dimensional scenes with motion parallax and depth cues. The amalgamation of stereoscopic display technologies, computing techniques, exhibition design, information and communications technologies (ICTs) are widely used in conference and exhibition centers, museums, libraries, art galleries, archive centers, and so forth. These innovative models of modern exhibition industry reshape the organizational structure, improve working methods and business processes for upstream and downstream enterprises. Immersive glasses-free stereoscopic display technologies consist of holographic 3D display, optical illusion display, projection stereoscopic display, floating 3D display, and light field 3D display. This paper analyzed the aforementioned technical background, technical principles, and typical application scenarios. Then, the advantages and disadvantages of each technology in key performance indicators, including resolution, color reproduction degree, and field of view angle were compared. Also, the future trends, limitations and potential improvement directions in practical application were discussed. This study explores the application of immersive glasses-free stereoscopic display technologies in meetings, incentives, conventions, and exhibitions (MICE) to improve audiences’ immersive experience, providing practical insights into such technologies as a critical basis for sustainable exhibition service.