Generation of high-quality lines and arrays using nanoparticle controlling processes

Huh, Seung Hun; Riu, Doh‐Hyung; Naono, Yasutomo; Taguchi, Yousuke; Kawabata, S.; Nakajima, Atsushi

doi:10.1063/1.2778464

Cited by 9 publications

(3 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Spin-coating, drop-casting, and dip-coating are all common techniques for depositing colloidal NCs such as CdSe and PbSe [7][8][9]. Large areas can be covered with roll-to-roll printing, and recent work has demonstrated that small features can be patterned with conventional photolithography [10] or new lithographic techniques in which functionalized NCs themselves take on the role of the resist [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

A flexible method for depositing dense nanocrystal thin films: impaction of germanium nanocrystals

Holman¹,

Kortshagen²

2010

Nanotechnology

View full text Add to dashboard Cite

Nanomaterials are exciting candidates for use in new optical and electronic devices ranging from solar cells to gas sensors. However, to reach their full potential, nanomaterials must be deposited as dense thin films on flexible substrates using inexpensive processing technologies such as roll-to-roll printing. We report a new, flexible technique for depositing aerosolized nanocrystals that lends itself to roll-to-roll processes. Germanium nanocrystals produced in a plasma are accelerated through a slit orifice by a supersonic gas jet and are impacted onto a translated substrate. A uniform nanocrystal film is quickly deposited over large areas, and features as small as 2 microm can then be patterned using conventional lift-off photolithography. The density of a deposited film depends on the pressures upstream and downstream of the orifice, their ratio, and the distance between the orifice and the substrate. Nanocrystal film densities exceeding 50% of the density of bulk germanium are routinely achieved with several sizes of nanocrystals, approaching the theoretical limit for randomly packed spheres. A simple model is presented that shows that the calculated nanocrystal velocity upon impaction is strongly correlated with the resulting film density.

show abstract

Section: Introductionmentioning

confidence: 99%

A flexible method for depositing dense nanocrystal thin films: impaction of germanium nanocrystals

Holman¹,

Kortshagen²

2010

Nanotechnology

View full text Add to dashboard Cite

show abstract

“…Hence, stabilizing the turbulence to create homogeneity in the microparticle deposition becomes an important issue. Although several studies have discussed how to pattern the microparticle deposition [ 5 , 7 , 8 , 9 , 10 , 26 , 27 ], stabilizing the aerosol turbulence for homogeneous microparticle deposition has not yet been fully investigated.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Microparticle Deposition Stability and Homogeneity on Planer for Synthesis of Self-Assembly Monolayer

et al. 2018

View full text Add to dashboard Cite

The deposition stability and homogeneity of microparticles improved with mask, lengthened nozzle and flow rate adjustment. The microparticles can be used to encapsulate monomers, before the monomers in the microparticles can be deposited onto a substrate for nanoscale self-assembly. For the uniformity of the synthesized nanofilm, the homogeneity of the deposited microparticles becomes an important issue. Based on the ANSYS simulation results, the effects of secondary flow were minimized with a lengthened nozzle. The ANSYS simulation was also used to investigate the ring-vortex generation and why the ring vortex can be eliminated by adding a mask with an aperture between the nozzle and deposition substrate. The experimental results also showed that particle deposition with a lengthened nozzle was more stable, while adding the mask stabilized deposition and diminished the ring-vortex contamination. The effects of flow rate and pressure were also investigated. Hence, the deposition stability and homogeneity of microparticles was improved.

show abstract

“…14,15) The combination of lithographic and NP fabrication techniques is very useful in the manufacture of NP devices and sensors. Various nanopatterning methods based on lithographic techniques such as electron beam (EB) lithography, [16][17][18][19][20] nanoimprint lithography, 21) focused ion beam lithography, 22) nanosphere lithography, [23][24][25][26] and block copolymer lithography 27) have been used to control the shape, size, and interparticle distance. Kuwabata and coworkers have reported direct patterning and Ag deposition by a lithographic technique using ionic liquid.…”

Section: Introductionmentioning

confidence: 99%

Formation of Au nanoparticle arrays on hydrogel two-dimensional patterns based on poly(vinylpyrrolidone)

Tsukuda

Okamoto

Yamamoto

et al. 2017

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

In this study, we demonstrated the formation of Au nanoparticle (NP) arrays on two-dimensional gel patterns based on poly(vinylpyrrolidone) (PVP), which were fabricated by electron beam (EB) lithography. Au NPs were preferentially formed on PVP patterns by photoreduction in HAuCl4-containing MeOH solutions without any surface treatment. The number density of the Au NPs was highly controlled by changing the UV irradiation time; therefore, increasing the UV irradiation time produced Au NP arrays with highly packed Au NPs on the PVP patterns. The size of the cross-linking networks of PVP, which depended on the cross-linking density induced by EB irradiation, plays a very important role in the formation of Au NPs in the Au ion-containing solution under UV irradiation. We discussed the difference in the fabricated Au NP arrays at different EB exposure doses in terms of the interaction between the gel networks and the Au NPs formed.

show abstract

Generation of high-quality lines and arrays using nanoparticle controlling processes

Cited by 9 publications

References 15 publications

A flexible method for depositing dense nanocrystal thin films: impaction of germanium nanocrystals

A flexible method for depositing dense nanocrystal thin films: impaction of germanium nanocrystals

Enhancing the Microparticle Deposition Stability and Homogeneity on Planer for Synthesis of Self-Assembly Monolayer

Formation of Au nanoparticle arrays on hydrogel two-dimensional patterns based on poly(vinylpyrrolidone)

Contact Info

Product

Resources

About