Abstract
Single-layer graphene (SLG) has been proposed as the thinnest protective/barrier layer for wide applications involving resistance to oxidation, corrosion, atomic/molecular diffusion, electromagnetic interference, and bacterial contamination. Functional metallic nanostructures have lower thermal stability than their bulk forms and are therefore susceptible to high energy photons. Here, we demonstrate that SLG can shield metallic nanostructures from intense laser radiation that would otherwise ablate them. By irradiation via a UV laser beam with nanosecond pulse width and a range of laser intensities (in millions of watt per cm2) onto a silver nanowire network, and conformally wrapping SLG on top of the nanowire network, we demonstrate that graphene "extracts and spreads" most of the thermal energy away from nanowire, thereby keeping it damage-free. Without graphene wrapping, the radiation would fragment the wires into smaller pieces and even decompose them into droplets. A systematic molecular dynamics simulation confirms the mechanism of SLG shielding. Consequently, particular damage-free and ablation-free laser-based nanomanufacturing of hybrid nanostructures might be sparked off by application of SLG on functional surfaces and nanofeatures.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 11121-11133 |
| Number of pages | 13 |
| Journal | ACS Nano |
| Volume | 9 |
| Issue number | 11 |
| DOIs | |
| State | Published - Nov 24 2015 |
| Externally published | Yes |
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Keywords
- hybrid nanowire graphene network
- pulsed laser annealing
- Raleigh instability
- silver nanowire network
- thermal barrier
ASJC Scopus subject areas
- Engineering(all)
- Materials Science(all)
- Physics and Astronomy(all)
Cite this
Single-Layer Graphene as a Barrier Layer for Intense UV Laser-Induced Damages for Silver Nanowire Network. / Das, Suprem R.; Nian, Qiong; Saei, Mojib; Jin, Shengyu; Back, Doosan; Kumar, Prashant; Janes, David B.; Alam, Muhammad A.; Cheng, Gary J.
In: ACS Nano, Vol. 9, No. 11, 24.11.2015, p. 11121-11133.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Single-Layer Graphene as a Barrier Layer for Intense UV Laser-Induced Damages for Silver Nanowire Network
AU - Das, Suprem R.
AU - Nian, Qiong
AU - Saei, Mojib
AU - Jin, Shengyu
AU - Back, Doosan
AU - Kumar, Prashant
AU - Janes, David B.
AU - Alam, Muhammad A.
AU - Cheng, Gary J.
PY - 2015/11/24
Y1 - 2015/11/24
N2 - Single-layer graphene (SLG) has been proposed as the thinnest protective/barrier layer for wide applications involving resistance to oxidation, corrosion, atomic/molecular diffusion, electromagnetic interference, and bacterial contamination. Functional metallic nanostructures have lower thermal stability than their bulk forms and are therefore susceptible to high energy photons. Here, we demonstrate that SLG can shield metallic nanostructures from intense laser radiation that would otherwise ablate them. By irradiation via a UV laser beam with nanosecond pulse width and a range of laser intensities (in millions of watt per cm2) onto a silver nanowire network, and conformally wrapping SLG on top of the nanowire network, we demonstrate that graphene "extracts and spreads" most of the thermal energy away from nanowire, thereby keeping it damage-free. Without graphene wrapping, the radiation would fragment the wires into smaller pieces and even decompose them into droplets. A systematic molecular dynamics simulation confirms the mechanism of SLG shielding. Consequently, particular damage-free and ablation-free laser-based nanomanufacturing of hybrid nanostructures might be sparked off by application of SLG on functional surfaces and nanofeatures.
AB - Single-layer graphene (SLG) has been proposed as the thinnest protective/barrier layer for wide applications involving resistance to oxidation, corrosion, atomic/molecular diffusion, electromagnetic interference, and bacterial contamination. Functional metallic nanostructures have lower thermal stability than their bulk forms and are therefore susceptible to high energy photons. Here, we demonstrate that SLG can shield metallic nanostructures from intense laser radiation that would otherwise ablate them. By irradiation via a UV laser beam with nanosecond pulse width and a range of laser intensities (in millions of watt per cm2) onto a silver nanowire network, and conformally wrapping SLG on top of the nanowire network, we demonstrate that graphene "extracts and spreads" most of the thermal energy away from nanowire, thereby keeping it damage-free. Without graphene wrapping, the radiation would fragment the wires into smaller pieces and even decompose them into droplets. A systematic molecular dynamics simulation confirms the mechanism of SLG shielding. Consequently, particular damage-free and ablation-free laser-based nanomanufacturing of hybrid nanostructures might be sparked off by application of SLG on functional surfaces and nanofeatures.
KW - hybrid nanowire graphene network
KW - pulsed laser annealing
KW - Raleigh instability
KW - silver nanowire network
KW - thermal barrier
UR - http://www.scopus.com/inward/record.url?scp=84948405992&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84948405992&partnerID=8YFLogxK
U2 - 10.1021/acsnano.5b04628
DO - 10.1021/acsnano.5b04628
M3 - Article
AN - SCOPUS:84948405992
VL - 9
SP - 11121
EP - 11133
JO - ACS Nano
JF - ACS Nano
SN - 1936-0851
IS - 11
ER -