1维高反射等腰三角形亚波长光栅的研究

为了能够更深入地理解等腰三角形亚波长光栅，采用严格耦合波法对其进行了理论分析和研究，得到了等腰三角形亚波长光栅数值模拟结果。分析了光栅周期、光入射角对等腰三角形亚波长光栅特性的影响，并从内在磁场分布角度解释了等腰三角形亚波长光栅所表现出的高反射特性。结果表明，不同光栅厚度的等腰三角形亚波长光栅会表现出不同的特性，当光栅厚度在0.54μm~0.57μm之间，等腰三角形亚波长光栅具有宽反射的反射带宽，而当光栅厚度在0.58μm~0.66μm之间，又会表现出导模共振特性。该研究能够为将来制备高性能等腰三角形亚波长光栅提供理论指导。

Research status of Ti-6Al-4V manufactured by selective laser melting for medical device applications

Selective laser melting (SLM) is used in medical device manufacturing recently due to the unique capability of fabricating high-complexity structures. With the growing popularity of SLM in medical device manufacturing, this paper mainly reviews the research progress of Ti-6Al-4V fabricated by SLM for surgical medical device applications, including the basic technics of SLM-Ti-6Al-4V fabrication, the achievable mechanical properties, cell compatibility, and some application cases. In addition, we summarizes the underlying problems in the field of medical device manufacturing based on the SLM tethnics. Although the development of SLM formed Ti-6Al-4V is relatively slow in the field of medical application, the existing research and potential indicate that with the continuous intensive research of basic manufacture and the continuous clinical practice, the precise treatment of trauma surgery will undoubtedly become possible.