南马萨诸塞州阿尔伯克基市的Optomec公司报道，该公司用直接金属沉积法(DMD)制备梯度功能钛结构件。DMD法是在激光工程净成形(LENS)技术基础上，由Sandia国家实验室开发的。Optomec公司用CAD软件绘制零件的固体模型。一束高能量的、计算机控制的激光作用于基体，用CAD绘出图形 Optomec in Albuquerque, Mass., Reported that the company uses gradient metal (DMD) to make gradient-functional titanium structures. The DMD method was developed by Sandia National Laboratories on the basis of Laser Engineering Net Shaping (LENS) technology. Optomec uses CAD software to draw solid models of parts. A bunch of high-energy, computer-controlled lasers act on the substrate and draw graphics in CAD