points) For silicon size is 20m, what is diameter of siicon nanowires? n nanowir
ID: 3349023 • Letter: P
Question
points) For silicon size is 20m, what is diameter of siicon nanowires? n nanowire growth by the vapor-iquid-solid (VLS), when Au liquid catalyst droplet . 25mm 15mm 20m 10m (m)(3 poms) For silcon nanowire growth by the vapor-Kquid-solid (VLS), what limit minimum diameter (typical 5) of sikon nanownes, there are two correct answer, chose two correct answers . A ow supersaturation in the vapor phase promotes the lateral growth on the side surfice of nanowres .A high supersaturation in the vapor phase initiate secondary nucleation at the surface of nanowires. . A lbw supersaturation in the vapor phase intate secondary mucleation at the surfice of nanowres. vapor phase promotes the lsteral growth on the side surfuce of A high supersaturation in the nanowres Question 4 (27 points) Photolitho graphy (a) 3 pois) For the Blowing figre, idenify which one is positive photoresist ? (o) 3 poins) For the folowing igre, identify which one is negative photoresist Coating Substrate hu Exposure Mask- 1y Develop Etch StripExplanation / Answer
4. Positive photo resist becomes more soluble after the exposure of UV light and is easily removed whereas negative photo resist becomes hard to dissolve when exposed to UV light and is not removed.
In figure A the region over which mask is not present that is the region exposed to UV light is not removed therefore itz a negative photo resist whereas in figure B the area exposed to UV light is removed therefore it has positive photo resist.
n) B
O)
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.