Abstract
Chiral sculptured thin films (STFs) were grown using the asymmetric serial-bideposition (ASBD) technique, whereby (i) two sub-deposits of unequal heights are made separated by a substrate rotation of 180° about the central normal axis, and (ii) consecutive subdeposit pairs are separated by a small substrate rotation δ on the order of a few degrees. Eight samples were prepared with sub-deposit heights in ratios of 1:1, 1.5:1, 2:1, 2.5:1, 3:1, 5:1, 7:1, and 9:1. A finely ambichiral STF was also grown. All nine samples were grown with the same vapor flux direction and to have 10 periods with the same thickness. The spectrums of all eight circular remittances of every sample were measured over a wide range of incidence angle θinc. Red-shifting and narrowing of the circular Bragg regime was observed with increasing sub-deposit-height ratio for all values of θinc, arriving at a limit with the 9:1 sample. The finely ambichiral sample has a circular Bragg regime similar to that of the 9:1 sample, but the latter exhibits much better discrimination between incident left circularly polarized light and right circularly polarized light than the former.
| Original language | English (US) |
|---|---|
| Title of host publication | Nanostructured Thin Films IX |
| Editors | Tom G. Mackay, Akhlesh Lakhtakia, Motofumi Suzuki |
| Publisher | SPIE |
| Volume | 9929 |
| ISBN (Electronic) | 9781510602496 |
| DOIs | |
| State | Published - Jan 1 2016 |
| Event | Nanostructured Thin Films IX - San Diego, United States Duration: Aug 30 2016 → Sep 1 2016 |
Other
| Other | Nanostructured Thin Films IX |
|---|---|
| Country | United States |
| City | San Diego |
| Period | 8/30/16 → 9/1/16 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering
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Reflection and transmission of obliquely incident light by chiral sculptured thin films fabricated using asymmetric serial-bideposition (ASBD) technique. / McAtee, Patrick D.; Lakhtakia, Akhlesh.
Nanostructured Thin Films IX. ed. / Tom G. Mackay; Akhlesh Lakhtakia; Motofumi Suzuki. Vol. 9929 SPIE, 2016. 99290Q.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Reflection and transmission of obliquely incident light by chiral sculptured thin films fabricated using asymmetric serial-bideposition (ASBD) technique
AU - McAtee, Patrick D.
AU - Lakhtakia, Akhlesh
PY - 2016/1/1
Y1 - 2016/1/1
N2 - Chiral sculptured thin films (STFs) were grown using the asymmetric serial-bideposition (ASBD) technique, whereby (i) two sub-deposits of unequal heights are made separated by a substrate rotation of 180° about the central normal axis, and (ii) consecutive subdeposit pairs are separated by a small substrate rotation δ on the order of a few degrees. Eight samples were prepared with sub-deposit heights in ratios of 1:1, 1.5:1, 2:1, 2.5:1, 3:1, 5:1, 7:1, and 9:1. A finely ambichiral STF was also grown. All nine samples were grown with the same vapor flux direction and to have 10 periods with the same thickness. The spectrums of all eight circular remittances of every sample were measured over a wide range of incidence angle θinc. Red-shifting and narrowing of the circular Bragg regime was observed with increasing sub-deposit-height ratio for all values of θinc, arriving at a limit with the 9:1 sample. The finely ambichiral sample has a circular Bragg regime similar to that of the 9:1 sample, but the latter exhibits much better discrimination between incident left circularly polarized light and right circularly polarized light than the former.
AB - Chiral sculptured thin films (STFs) were grown using the asymmetric serial-bideposition (ASBD) technique, whereby (i) two sub-deposits of unequal heights are made separated by a substrate rotation of 180° about the central normal axis, and (ii) consecutive subdeposit pairs are separated by a small substrate rotation δ on the order of a few degrees. Eight samples were prepared with sub-deposit heights in ratios of 1:1, 1.5:1, 2:1, 2.5:1, 3:1, 5:1, 7:1, and 9:1. A finely ambichiral STF was also grown. All nine samples were grown with the same vapor flux direction and to have 10 periods with the same thickness. The spectrums of all eight circular remittances of every sample were measured over a wide range of incidence angle θinc. Red-shifting and narrowing of the circular Bragg regime was observed with increasing sub-deposit-height ratio for all values of θinc, arriving at a limit with the 9:1 sample. The finely ambichiral sample has a circular Bragg regime similar to that of the 9:1 sample, but the latter exhibits much better discrimination between incident left circularly polarized light and right circularly polarized light than the former.
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U2 - 10.1117/12.2237856
DO - 10.1117/12.2237856
M3 - Conference contribution
VL - 9929
BT - Nanostructured Thin Films IX
A2 - Mackay, Tom G.
A2 - Lakhtakia, Akhlesh
A2 - Suzuki, Motofumi
PB - SPIE
ER -