Nanosensors for medicines

1. Nanosensors for medicines

4. History:

5. Material first reported in 1956 by Uhlir as an effect from electrochemical polishing studies using a low current density.

6. Chemical etching with HF/HNO3 also produced porous silicon.

7. Crystalline etch channels found in early 1970’s by Theunissen.

8. Pickering et. al. first noted photoluminescence at room temperature.

12. Nano-metals have peculiar optical proprieties due to the size confinement

13. Metal nanoparticles have colours that are dependent on their size and surrounding

17. Sphere shaped 10nm+

20. B: Real-time detection of the conductance for an APTES modified SiNW for pHs from 2 to 9

21. C: Plot of the conductance versus Ph