A multi-center fragmentation is governed by steric factors. 多中心断裂受到位阻因素的控制。
Oleylamine was also found on the surface of nanoparticles, indicating its role as capping agent which provided steric protection of as-synthesized nanoparticles from agglomeration. 油胺也存在于纳米颗粒的表面，表明它具有帽化试剂的作用，能通过提供位阻保护作用防止测试纳米颗粒发生凝聚。
