Area-Addressable ZnO Nanowire-Based Cold Cathode Transparent Flat-Panel X-ray Sources for Visual Intraoperative Radiotherapy

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Nano Materials Pub Date : 2024-11-21 DOI:10.1021/acsanm.4c0497910.1021/acsanm.4c04979

Song Kang, Guofu Zhang, Runze Zhan, Yuan Xu, Linghong Zhou, Shaozhi Deng, Ningsheng Xu and Jun Chen*,

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引用次数: 0

Abstract

X-ray intraoperative radiotherapy (IORT) is an important method for treating specific tumors. Area-addressable transparent flat-panel X-ray source can achieve selective-area radiotherapy and direct optical imaging guide, which could enhance the capability of the current IORT technique and has not been reported to date. In this paper, an area-addressable transparent flat-panel X-ray source was realized using zinc oxide (ZnO) nanowire field emitter arrays (FEAs) and an indium tin oxide (ITO) transparent anode. Planar-gate ZnO nanowire FEAs were fabricated and demonstrated a good addressing performance and uniform electron emission characteristics. A maximum anode current density of 884 μA/cm² was measured at one area under gate-addressed emission conditions, and the current fluctuation was approximately 5.8% in 2.5 h. The planar-gated ZnO nanowire FEAs were applied in the transparent flat-panel X-ray source. A radiation dose rate of 5.76 mGy/s was measured at the anode surface of the flat-panel X-ray source under the application of 40 kV anode voltages. The reported X-ray source device has potential applications in advanced intraoperative radiotherapy.

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来源期刊

ACS Applied Nano Materials Multiple-

CiteScore

8.30

自引率

3.40%

发文量

1601

期刊介绍： ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.