A transmission electron microscope (TEM,JEOL100 CXII) was used to image and characterize the NTs and AuNPs.
All magnetic separation was done using amagnetic separator (FlexiMag, SpheroTech).
Acentrifuge (Micro12, Fisher Scientific) was used to separate and purify the nanoparticles.
An incubator (HS-101, Amerex Instrument Inc.) was used for the hybridization reaction.