Last year Nokia, the world's largest handset-maker, raised eyebrows with research showing that this approach could scavenge nearly 100 times as much energy as Dr Smith's approach.

去年全球最大的手机制造商诺基亚扬眉吐气了，研究表明从多个来源收获辐射这一方法所能收集的能量几乎是史密斯方法的100倍。