scholarly journals Pattern transfer using block copolymers

Author(s):  
Xiaodan Gu ◽  
Ilja Gunkel ◽  
Thomas P. Russell

To meet the increasing demand for patterning smaller feature sizes, a lithography technique is required with the ability to pattern sub-20 nm features. While top-down photolithography is approaching its limit in the continued drive to meet Moore’s law, the use of directed self-assembly (DSA) of block copolymers (BCPs) offers a promising route to meet this challenge in achieving nanometre feature sizes. Recent developments in BCP lithography and in the DSA of BCPs are reviewed. While tremendous advances have been made in this field, there are still hurdles that need to be overcome to realize the full potential of BCPs and their actual use.

2018 ◽  
Vol 90 (9) ◽  
pp. 1393-1407 ◽  
Author(s):  
Leonardo Scarabelli

Abstract The field of plasmonics has grown at an incredible pace in the last couple of decades, and the synthesis and self-assembly of anisotropic plasmonic materials remains highly dynamic. The engineering of nanoparticle optical and electronic properties has resulted in important consequences for several scientific fields, including energy, medicine, biosensing, and electronics. However, the full potential of plasmonics has not yet been realized due to crucial challenges that remain in the field. In particular, the development of nanoparticles with new plasmonic properties and surface chemistries could enable the rational design of more complex architectures capable of performing advanced functions, like cascade reactions, energy conversion, or signal transduction. The scope of this short review is to highlight the most recent developments in the synthesis and self-assembly of anisotropic metal nanoparticles, which are capable of bringing forward the next generation of plasmonic materials.


Soft Matter ◽  
2017 ◽  
Vol 13 (40) ◽  
pp. 7406-7411 ◽  
Author(s):  
I. Otsuka ◽  
N. Nilsson ◽  
D. B. Suyatin ◽  
I. Maximov ◽  
R. Borsali

Self-assembly of block copolymers (BCPs) provides an attractive nanolithography approach, which looks especially promising for fabrication of regular structures with characteristic sizes below 10 nm. Nevertheless, directed self-assembly (DSA) and pattern transfer for BCPs with such small features remain to be a challenge.


Author(s):  
Parvaneh Mokarian-Tabari ◽  
Catalina Vallejo-Giraldo ◽  
Marc Fernandez-Yague ◽  
Cian Cummins ◽  
Michael A. Morris ◽  
...  

Nanoscale ◽  
2014 ◽  
Vol 6 (24) ◽  
pp. 15216-15221 ◽  
Author(s):  
Woon Ik Park ◽  
Sheng Tong ◽  
Yuzi Liu ◽  
Il Woong Jung ◽  
Andreas Roelofs ◽  
...  

Pattern generation of well-controlled block copolymers (BCPs) with a high Flory–Huggins interaction parameter (χ) is important for applications in sub-20 nm nanolithography.


2016 ◽  
Vol 45 (11) ◽  
pp. 3244-3274 ◽  
Author(s):  
Dawn E. Barry ◽  
David F. Caffrey ◽  
Thorfinnur Gunnlaugsson

This review focuses on recent developments made in the area of lanthanide directed synthesis/formation of supramolecular self-assembly structures including the formation of complexes/bundles, helicates, MOFs and interlocked molecules.


2021 ◽  
Author(s):  
Tae Wan Park ◽  
Young Lim Kang ◽  
Myunghwan Byun ◽  
Suck Won Hong ◽  
Yong-Sik Ahn ◽  
...  

Directed self-assembly (DSA) of block copolymers (BCPs) has garnered much attention due to its excellent pattern resolution, simple process, and good compatibility with many other lithography methods for useful nanodevice...


2002 ◽  
Vol 724 ◽  
Author(s):  
Elizabeth R. Wright ◽  
R. Andrew McMillan ◽  
Alan Cooper ◽  
Robert P. Apkarian ◽  
Vincent P. Conticello

AbstractTriblock copolymers have traditionally been synthesized with conventional organic components. However, triblock copolymers could be synthesized by the incorporation of two incompatible protein-based polymers. The polypeptides would differ in their hydrophobicity and confer unique physiochemical properties to the resultant materials. One protein-based polymer, based on a sequence of native elastin, that has been utilized in the synthesis of biomaterials is poly (Valine-Proline-Glycine-ValineGlycine) or poly(VPGVG) [1]. This polypeptide has been shown to have an inverse temperature transition that can be adjusted by non-conservative amino acid substitutions in the fourth position [2]. By combining polypeptide blocks with different inverse temperature transition values due to hydrophobicity differences, we expect to produce amphiphilic polypeptides capable of self-assembly into hydrogels. Our research examines the design, synthesis and characterization of elastin-mimetic block copolymers as functional biomaterials. The methods that are used for the characterization include variable temperature 1D and 2D High-Resolution-NMR, cryo-High Resolutions Scanning Electron Microscopy and Differential Scanning Calorimetry.


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