Large Area, Aluminum Metal-Insulator-Metal Infrared Perfect Absorber

Author(s):  
Thang Duy Dao ◽  
Kai Chen ◽  
Satoshi Ishii ◽  
Gandham Lakshminarayana ◽  
Akihiko Ohi ◽  
...  
2020 ◽  
Vol 22 (3) ◽  
pp. 035003
Author(s):  
Li Li ◽  
Daping Zhao ◽  
Jiang Fan ◽  
Rong Huang ◽  
Wei Wu ◽  
...  

2020 ◽  
Vol 6 (31) ◽  
pp. eabb6462
Author(s):  
Tae Wan Park ◽  
Myunghwan Byun ◽  
Hyunsung Jung ◽  
Gyu Rac Lee ◽  
Jae Hong Park ◽  
...  

Nanotransfer printing (nTP) has attracted considerable attention due to its good pattern resolution, process simplicity, and cost-effectiveness. However, the development of a large-area nTP process has been hampered by critical reliability issues related to the uniform replication and regular transfer printing of functional nanomaterials. Here, we present a very practical thermally assisted nanotransfer printing (T-nTP) process that can easily produce well-ordered nanostructures on an 8-inch wafer via the use of a heat-rolling press system that provides both uniform pressure and heat. We also demonstrate various complex pattern geometries, such as wave, square, nut, zigzag, and elliptical nanostructures, on diverse substrates via T-nTP. Furthermore, we demonstrate how to obtain a high-density crossbar metal-insulator-metal memristive array using a combined method of T-nTP and directed self-assembly. We expect that the state-of-the-art T-nTP process presented here combined with other emerging patterning techniques will be especially useful for the large-area nanofabrication of various devices.


Nanophotonics ◽  
2019 ◽  
Vol 8 (5) ◽  
pp. 823-832 ◽  
Author(s):  
Amir Ghobadi ◽  
Hodjat Hajian ◽  
Murat Gokbayrak ◽  
Bayram Butun ◽  
Ekmel Ozbay

AbstractIn recent years, sub-wavelength metamaterials-based light perfect absorbers have been the subject of many studies. The most frequently utilized absorber configuration is based on nanostructured plasmonic metals. However, two main drawbacks were raised for this design architecture. One is the fabrication complexity and large scale incompatibility of these nano units. The other one is the inherent limitation of these common metals which mostly operate in the visible frequency range. Recently, strong interference effects in lithography-free planar multilayer designs have been proposed as a solution for tackling these drawbacks. In this paper, we reveal the extraordinary potential of bismuth (Bi) metal in achieving light perfect absorption in a planar design through a broad wavelength regime. For this aim, we adopted a modeling approach based on the transfer matrix method (TMM) to find the ideal conditions for light perfect absorption. According to the findings of our modeling and numerical simulations, it was demonstrated that the use of Bi in the metal-insulator-metal-insulator (MIMI) configuration can simultaneously provide two distinct functionalities; a narrow near unity reflection response and an ultra-broadband near perfect absorption. The reflection behavior can be employed to realize additive color filters in the visible range, while the ultra-broadband absorption response of the design can fully harvest solar irradiation in the visible and near infrared (NIR) ranges. The findings of this paper demonstrate the extraordinary potential of Bi metal for the design of deep sub-wavelength optical devices.


Micromachines ◽  
2020 ◽  
Vol 11 (4) ◽  
pp. 409 ◽  
Author(s):  
Naoki To ◽  
Saulius Juodkazis ◽  
Yoshiaki Nishijima

Realisation of a perfect absorber A = 1 with transmittance and reflectance T = R = 0 by a thin metasurface is one of the hot topics in recent nanophotonics prompted by energy harvesting and sensor applications ( A + R + T = 1 is the energy conservation). Here we tested the optical properties of over 400 structures of metal–insulator–metal (MIM) metasurfaces for a range of variation in thickness of insulator, diameter of a disc and intra-disc distance both experimentally and numerically. Conditions of a near perfect absorption A > 95 % with simultaneously occurring anti-reflection property ( R < 5 % ) was experimentally determined. Differences between the bulk vs. nano-thin film properties at mid-IR of the used materials can be of interest for plasmonic multi-metal alloys and high entropy metals.


Nanoscale ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 3112-3120
Author(s):  
Li Li ◽  
Lei Wang ◽  
Chenglin Du ◽  
Zhongyuan Guan ◽  
Yinxiao Xiang ◽  
...  

Ultrastrong coupling in the near-UV range between aluminum metal–insulator–metal cavities and CdZnS/ZnS quantum dots is revealed by using cathodoluminescence; at the same time, the plexcitonic modes are spatially mapped at the deep-subwavelength scale.


2019 ◽  
Vol 27 (21) ◽  
pp. 30909 ◽  
Author(s):  
Zhuqing Zhu ◽  
Liu Shi ◽  
Shiren Chen ◽  
Jing Han ◽  
Hengwen Zhang ◽  
...  

Author(s):  
Naoki To ◽  
Saulius Juodkazis ◽  
Yoshiaki Nishijima

The realization of a perfect absorber A = 1 with transmittance and reflectance T=R=0 by a thin metasurface is one of the hot topics in recent nanophotonics prompted by energy harvesting and sensor applications (A + R + T =1 is the energy conservation). Here we tested optical properties of over 400 structures of metal-insulator-metal (MIM) metasurfaces for a range of variation in thickness of insulator, the diameter of a disc and intra-disc distance experimentally and numerically. Conditions of a near-perfect absorption A &gt; 95% with simultaneously occurring anti-reflection property (R &lt; 5%) were experimentally determined. Differences between the bulk vs. nano-thin film properties at mid-IR of the used materials can be of interest for plasmonic multi-metal alloys and high entropy metals.


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