Dev Kumar Thapa and Anshu Pandey, two scientists from the Indian Institute of Science, suggest a concoction of gold and silver nanoparticles achieves the Nobel Prize–worthy goal.

【翻译】来自印度科学院的两位科学家Dev Kumar Thapa 和AnsuPandey 认为，金银纳米粒子混合颗粒达到了值得授诺贝尔奖的目标。

suggest，意为“认为”，后接省略了that 的宾语从句：

a concoction of gold and silver nanoparticles （主语）achieves （谓语动词）the Nobel Prize–worthy goal.（宾语）

很明显，achieves 的主语是： a concoction...