Vol. 2 No. 4 (2024)

In this paper, a spectroscopic technology based on a trough-type parabolic condenser is proposed, which effectively utilizes the full spectrum of solar energy for light transmission through optical fibers. The technology comprises four parts, which are concentration, transmission, splitting, and detection, and its application in the field of clean energy was explored. A one-way glass is introduced into the installation as a device for light transmission restriction. The one-way transmittance of one-way glass effectively ensures the transmission direction of sunlight. According to the light simulation results from TracePro software, after the light was transmitted through the one-way glass reflection device, light intensity was guaranteed to meet usage requirements. After being focused by collimating lens and Fresnel lens, the light is introduced into a Roland circle spectroscopic system through an optical fiber. After splitting, various types of light passing through the detection system are introduced into their respective optical fibers for long-distance transmission and use. From the experiments, it was found that through reasonable splitting and the targeted use of different wavelength bands, the effective utilization of the full spectrum of solar energy significantly improved, verifying the feasibility of the device design idea.

Low-temperature plasma polishing technology, by virtue of the plasma’s highly ionized characteristics, can accurately remove tiny defects and impurities on the surface of chip materials, improve the flatness and finish of chip materials, reduce mechanical damage and subsurface damage, and has a high material removal rate. This paper reviews the application status, advantages and limitations of plasma polishing technologies in the field of chip material processing. The principles and applications of plasma-assisted polishing, plasma chemical vaporization machining, plasma electrolytic processing-mechanical polishing and plasma assisted selective etching are specifically discussed, and their advantages and limitations are analyzed. Finally, the development of plasma chip-polishing technology is prospected, aiming to provide a useful reference for the continuous improvement of chip manufacturing processes and the future development of the microelectronics industry.

Value chain analysis is an important tool for optimizing operations and decision-making in enterprises. As the concept of sustainable development gains recognition worldwide, research on value chains is increasingly focused on sustainability. Traditionally, energy management and value management have operated in parallel with limited intersections. However, after the 2015 Paris Agreement set the goal of achieving net-zero emissions, carbon management has become integral to national strategies, necessitating a re-evaluation of traditional value chains. In this paper, the “energy value chain” is introduced, a novel concept that integrates energy consumption with value creation and carbon emissions, emphasizing the coupling relationships among “energy flow”, “value flow”, and “carbon flow.” From a review of current value chains in the power, steel, petroleum, and transportation industries, the specific energy value chain for each industry is defined and its rationale and effectiveness are discussed. This integrated analytical method provides a strategic tool for industries or enterprises to optimize energy consumption, reduce carbon emissions, and enhance competitive advantage.