Optical Properties of Short Range Ordered Arrays of Nanometer Gold Disks Prepared by Colloidal Lithography

2003 ◽  
Vol 107 (24) ◽  
pp. 5768-5772 ◽  
Author(s):  
Per Hanarp ◽  
Mikael Käll ◽  
Duncan S. Sutherland
Nanoscale ◽  
2019 ◽  
Vol 11 (17) ◽  
pp. 8416-8432 ◽  
Author(s):  
Maura Cesaria ◽  
Antonietta Taurino ◽  
Maria Grazia Manera ◽  
Maria Minunni ◽  
Simona Scarano ◽  
...  

A simplified colloidal lithography protocol (polyelectrolyte monolayer) for Au nanohole fabrication and autocorrelation/FFT analysis of SEM images to disclose hidden short-range periodicities.


2019 ◽  
Vol 1 (11) ◽  
pp. 4282-4289
Author(s):  
Bita Malekian ◽  
Kunli Xiong ◽  
Evan S. H. Kang ◽  
John Andersson ◽  
Gustav Emilsson ◽  
...  

We present new plasmonic nanopore arrays and their optical properties, in particular the influence from short-range vs. long-range ordering.


2002 ◽  
Vol 12 (9) ◽  
pp. 57-60
Author(s):  
M. Dressel ◽  
N. Drichko ◽  
B. Salameh ◽  
J. Thorns ◽  
J. Schlueter ◽  
...  

In the optical spectra of the non-superconducting salt α-(BEDT-TTF)2KHg(SCN)4 a strong feature appears at frequencies of about 200 cm-1 and temperatures below 200 K which indicates the opening of a pseudogap. This is in contrast to the superconducting α-(BEDT-TTF)2NH4Hg(SCN)4 whch exhlbits metallic-like optical properties down to 2 K. Based on exact diagonalisation calculations of the optical conductivity on an extended Hubbard model at quarter-filling we argue that the proximity of these salts to a charge ordering transition is responsible for the observed pseudogap. Our proposed scenario suggests that the different ground states, including superconductivity, are a consequence of the fluctuations associated with short range charge ordering which builds up close to the quantum phase transition.


2003 ◽  
Vol 17 ◽  
pp. 433-435 ◽  
Author(s):  
L.M. Goldenberg ◽  
J. Wagner ◽  
J. Stumpe ◽  
B.-R. Paulke ◽  
E. Görnitz

ACS Nano ◽  
2012 ◽  
Vol 6 (11) ◽  
pp. 10405-10415 ◽  
Author(s):  
Juliane Junesch ◽  
Takumi Sannomiya ◽  
Andreas B. Dahlin

MRS Bulletin ◽  
2001 ◽  
Vol 26 (8) ◽  
pp. 637-641 ◽  
Author(s):  
Vicki L. Colvin

Over a decade ago, theorists predicted that photonic crystals active at visible and near-infrared wavelengths would possess a variety of exciting optical properties. Only in the last several years, however, have experimentalists begun to build materials that realize this potential in the laboratory. This lag between experiment and theory is primarily due to the to the challenges associated with fabricating these unique materials. As the term “crystal” suggests, these samples must consist of highly perfect ordered arrays of solids. However, unlike conventional crystals, which exhibit order on the angstrom length scale, photonic crystals must have order on the submicrometer length scale. In addition, many of the most valuable properties of photonic crystals are only realized when samples possess a “full” photonic bandgap. For such systems, large dielectric contrasts and particular crystal symmetries create a range of frequencies over which light cannot propagate. Realizing the nanoscopic architectures required to form such systems is a challenge for experimentalists. As a result, fabrication schemes that rely on lithographic techniques or spontaneous assembly have been a focus in the development of the field.


2015 ◽  
Vol 3 (1) ◽  
pp. 51-57 ◽  
Author(s):  
Xinyang Li ◽  
Yanchun Wu ◽  
Lifeng Hang ◽  
Dandan Men ◽  
Weiping Cai ◽  
...  

Aligned Au nanobowl arrays on a flexible film with specific optical properties were obtained by combining template-assisted self-assembly and colloidal lithography.


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