Terahertz spectroscopic detection of fine structures for Zinc phosphate

磷酸锌精细结构的太赫兹光谱检测

• 批准号: 23560859
• 负责人: TANABE Tadao
• 金额: $ 3.41万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23560859/
• 关键词: テラヘルツ; 化成処理皮膜; リン酸亜鉛; 水和構造; 非破壊検査

The energy of terahertz wave is as low as room temperature, for example, whose energy level corresponds to hydrogen bonding, van der Waals interactions. The terahertz wave is sensitive to soft materials such as hydrate as well as to wet conditions. In this study, the terahertz detection of fine structures for Zinc phosphate has been described. Terahertz spectra have been measured for Zinc phosphate with various hydration structures. The frequency tunable narrow band terahertz wave was generated by difference frequency generation of two near infrared beams from a GaP crystal. Based on the terahertz spectra, the reflection absorption imaging of terahertz wave was applied to detection of corrosion products on steel sheets. It was found that the terahertz wave technique is very available for non-destructive corrosion inspection of metal surface.

太赫兹波的能量低至室温，例如，其能级对应于氢键、货车德瓦尔斯相互作用。太赫兹波对水合物等软材料以及潮湿条件敏感。本论文主要研究了磷酸锌精细结构的太赫兹探测。测量了不同水化结构的磷酸锌的太赫兹光谱。利用GaP晶体差频产生两束近红外激光，产生了频率可调谐的窄带太赫兹波。基于太赫兹光谱，将太赫兹波反射吸收成像技术应用于钢板腐蚀产物的检测。结果表明，太赫兹波技术是一种非常有效的金属表面腐蚀无损检测技术。

项目成果

溶融Znめっき鋼板のテラヘルツ分光イメージングによる塗膜下腐食成分検出

利用太赫兹光谱成像检测热浸镀锌钢板涂膜下的腐蚀成分

• 发表时间: 2013
• 作者: 中村悠太;高橋星也;假屋英孝;田邉匡生;西原克浩;谷山明;小山裕
• 通讯作者: 小山裕

Non-destructive Evaluation of a Corroded Metal Surface Using Terahertz Wave

使用太赫兹波对腐蚀金属表面进行无损评估

• DOI: 10.1149/05050.0081ecst
• 发表时间: 2013
• 期刊: ECS Trans
• 作者: H. Kariya;A. Sato;T. Tanabe;K. Saito;K. Nishihara;A. Taniyama;Y. Oyama
• 通讯作者: Y. Oyama

広帯域高出力高分解能テラヘルツ波発生と応用-非破壊検査技術としての展開-

宽带、高功率、高分辨率太赫兹波的产生及应用-无损检测技术的开发-

• 发表时间: 2013
• 期刊: 化学工業
• 作者: 田邉匡生;佐々木哲朗;小山裕
• 通讯作者: 小山裕

Frequency-Tunable Coherent THz-Wave Pulse Generation Using Two Cr:Forsterite Lasers with One Nd:YAG Laser Pumping and Applications for Non-Destructive THz Inspection

使用两个 Cr:Forsterite 激光器和一个 Nd:YAG 激光泵浦产生频率可调谐相干太赫兹波脉冲以及无损太赫兹检测的应用

• 发表时间: 2011
• 期刊: Laser Systems for Applications, InTech
• 作者: Tadao Tanabe;Yutaka Oyama
• 通讯作者: Yutaka Oyama

Ultra Narrow Line Width CW THz Light Source Implemented with Wavelength Tunable Semiconductor Lasers and Fiber Amplifier

采用波长可调谐半导体激光器和光纤放大器实现超窄线宽连续太赫兹光源

• DOI: 10.1541/ieejeiss.133.1461
• 发表时间: 2013
• 期刊: IEEJ Transactions on Electronics, Information and Systems
• 作者: 佐々木雄寛;出崎光;田邉匡生;小山裕
• 通讯作者: 小山裕