Ordered nanostructures array fabricated by nanosphere lithography

Zhang, Yongjun; Wang, Xianghe; Wang, Yaxin; Liu, Huilian; Yang, Jing

doi:10.1016/j.jallcom.2007.11.021

Cited by 23 publications

(15 citation statements)

References 25 publications

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“…31,32 Other techniques to make black silicon do not need photolithography. The masks are made of silica or polystyrene [33][34][35] particles directly deposited on silicon.…”

Section: Black Siliconmentioning

confidence: 99%

Optical properties of nanostructured materials: a review

2011

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Abstract. Depending on the size of the smallest feature, the interaction of light with structured materials can be very different. This fundamental problem is treated by different theories. If first order theories are sufficient to describe the scattering from low roughness surfaces, second order or even higher order theories must be used for high roughness surfaces. Random surface structures can then be designed to distribute the light in different propagation directions. For complex structures such as black silicon, which reflects very little light, the theory needs further development. When the material is periodically structured, we speak about photonic crystals or metamaterials. Different theoretical approaches have been developed and experimental techniques are rapidly progressing. However, some work still remains to understand the full potential of this field. When the material is structured in dimension much smaller than the wavelength, the notion of complex refractive index must be revisited. Plasmon resonance can be excited by a progressing wave on metallic nanoparticles inducing a shaping of the absorption band and of the dispersion of the extinction coefficient. This addresses the problem of the permittivity of such metallic nanoparticles. The coupling between several metallic nanoparticles induces a field enhancement in the surrounding media, which can increase phenomena like scattering, absorption, luminescence, or Raman scattering. For semiconductor nanoparticles, electron confinement also induces a modulated absorption spectra. The refractive index is then modified. The bandgap of the material is changed because of the discretization of the electron energy, which can be controlled by the nanometers size particles. Such quantum dots behave like atoms and become luminescent. The lifetime of the electron in the excited states are much larger than in continuous energy bands. Electrons in coupled quantum dots behave as they do in molecules. Many applications should be forthcoming in the near future in this field of research. C 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

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“…31,32 Other techniques to make black silicon do not need photolithography. The masks are made of silica or polystyrene [33][34][35] particles directly deposited on silicon.…”

Section: Black Siliconmentioning

confidence: 99%

Optical properties of nanostructured materials: a review

2011

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“…Sodium Dodecyl Sulphate (SDS) was added to this bath to a concentration of 150 µg L −1 : it has been demonstrated in the literature that SDS can aid the assembly of reagent microspheres on a water surface. 42,43 780 nm diameter carboxylate-terminated polystyrene reagent microspheres obtained from Duke Scientific were mixed with reagent-grade ethanol into a 1:2 microsphere solution : ethanol mixture by volume. This mixture was introduced to the water surface via a hydrophilic glass slide previously cleaned in SDS.…”

Section: Methodsmentioning

confidence: 99%

“…[32][33][34][35][36][37][38][39][40][41][42][43] The most pronounced limitation of such techniques is the difficulty of achieving long-range ordering in the colloidal mask.…”

Section: Introductionmentioning

confidence: 99%

Effect of disorder studied with ferromagnetic resonance for arrays of tangentially magnetized submicron Permalloy disks fabricated by nanosphere lithography

Ross

Kostylev

Stamps

2011

Journal of Applied Physics

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Tangentially magnetized trigonal arrays of sub-micron Permalloy discs are characterized with ferromagnetic resonance to determine the possible contributions to frequency and linewidth from array disorder. Each array is fabricated by a water-surface self-assembly lithographic technique, and consists of a large trigonal array of 700 nm diameter magnetic discs. Each array is characterized by a different degree of ordering. Two modes are present in the ferromagnetic resonance spectra: a large amplitude, 'fundamental' mode and a lower amplitude mode at higher field. Angular dependence of the resonance field in a very well ordered array is found to be negligible for both modes. The relationship between resonance frequency and applied magnetic field is found to be uncorrelated with array disorder. Linewidth is found to increase with increasing array disorder.

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“…Ion etching the PS in coating allows controlling their size and distances between them [7,8]. Besides, in the case of multilayered coating etching PS in the top layer opens those in lower layers and increase a number of the obtained NP.…”

Section: Introductionmentioning

confidence: 99%

Using nanosphere lithography for fabrication of a multilayered system of ordered gold nanoparticles

Styopkin¹

2017

Semicond. Phys. Quantum Electron. Optoelectron.

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Abstract. New modification of nanosphere lithography has been realized to obtain multilayered systems of ordered gold nanoparticles (NP). NP have been formed using vacuum deposition of 5…60-nm layer of gold on ionic etched multilayered regular coating consisted of several layers of 200-nm polystyrene spheres. Optical study shows that spectra of NP depend on their thickness and may be changed by heat treatment. Increasing the NP thickness within the 5…20-nm range leads to a shortwave displacement of the plasmon resonance peak position, while the longwave shift is observed in 20…60-nm range. Heat treatment of NP brings narrowing and displacement of spectral bands, rising the extinction. It has been supposed that variation of the NP shape is the most substantial factor for changes of optical properties in the 5…20 nm thickness region, while electromagnetic coupling between NP in different layers becomes more important for thicknesses larger than 40 nm. Optical properties inherent to the obtained system of NP can be tuned by changing the polystyrene spheres diameter, extent of etching, thickness of gold layer and with the heat treatment. It may be used in design of nanophotonic devices.

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Ordered nanostructures array fabricated by nanosphere lithography

Cited by 23 publications

References 25 publications

Optical properties of nanostructured materials: a review

Optical properties of nanostructured materials: a review

Effect of disorder studied with ferromagnetic resonance for arrays of tangentially magnetized submicron Permalloy disks fabricated by nanosphere lithography

Using nanosphere lithography for fabrication of a multilayered system of ordered gold nanoparticles

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