PurposeTriple helix theory stresses co‐evolution and interaction among governments, enterprises and universities, and is paid great attention by governments, universities and enterprises worldwide. The purpose of this paper is to investigate the role that Chinese government R&D investments play in the interaction between enterprises and universities.Design/methodology/approachBasing on provincial panel data of Chinese universities from 2004‐2010, the impact of government R&D investments on patent technology transfer activities of Chinese universities is studied by empirical analysis. More specifically, the paper examines the impact of both Chinese government R&D funding and national R&D programs on the number and the revenue of patent technology transfer contracts.FindingsThe study finds that the amount of government R&D funding and the number of 973 Programs in one region have significantly increased the number and the revenue of patent technology transfer contracts in that region. Moreover, the number of National S&T Pillar Programs, 863 Program and National Natural Science Foundation Program are also determinants of the number of patent technology transfer contracts.Originality/valueThis paper studies government's role in university‐enterprise patent technology transfer activities in a Chinese context. It reveals a government‐dominant position to promote patent technology transfer activities in Chinese triple helix model. It also provides a reference for decision makers in governments, industries and universities.
Structural color technology has garnered extensive attention in the development of ink-free color technology for applications such as color displays, color reflectors, and colorimetric devices. A Fabry–Perot (F–P) structure formed by stacking a metal base, an interference cavity, and a phase change material layer (MIP) is of significant interest as a lithography-free and scalable color-reflecting structure. Such a structure can selectively reflect interfered light over a range of visible wavelengths, resulting in bright colors. However, obtaining a wide range of saturation regulation spaces has become a challenge. In this study, an F–P color reflector based on a phase-change material (PCM) base is proposed, which consists of a PCM base, an interference layer, and a PCM top layer (PIP). The results of the finite element simulation and experimental measurements demonstrated that the PIP reflector had an adjustable saturation range 10.75 times larger than that of the MIP reflector. The effects of the structure size and phase change of the PCM layer on the structural characteristics were further analyzed. In addition, the performance of laser-induced color change and its application in color printing were demonstrated. The present study sheds new light on color reflectors, and the strategy proposed indicates their potential optoelectronic applications based on saturation modulation.
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