Carbon nanotubes and porphyrins: an exciting combination for optoelectronic devices

2007 ◽  
Vol 11 (05) ◽  
pp. 348-358 ◽  
Author(s):  
Fernando Langa ◽  
M. José Gómez-Escalonilla ◽  
Pilar de la Cruz
Keyword(s):  
Carbon Nanotubes ◽  
State Of The Art ◽  
Optoelectronic Devices ◽  
The State ◽  
Potential Applications ◽  
Covalently Linked

Hybrids between carbon nanotubes and porphyrins, either covalently or non-covalently linked, have been the target of numerous groups with the aim of studying their properties and searching for potential applications. The state of the art in the field of carbon nanotubes and porphyrins is reviewed here.

A Comprehensive Taxonomy of Dynamic Texture Representation

2023 ◽  
Vol 55 (1) ◽  
pp. 1-39
Author(s):  
Thanh Tuan Nguyen ◽  
Thanh Phuong Nguyen
Keyword(s):  
Large Scale ◽  
Environmental Changes ◽  
State Of The Art ◽  
The State ◽  
Future Research ◽  
Research Activities ◽  
Potential Applications ◽  
Benchmark Datasets ◽  
Negative Impacts ◽  
Made In

Representing dynamic textures (DTs) plays an important role in many real implementations in the computer vision community. Due to the turbulent and non-directional motions of DTs along with the negative impacts of different factors (e.g., environmental changes, noise, illumination, etc.), efficiently analyzing DTs has raised considerable challenges for the state-of-the-art approaches. For 20 years, many different techniques have been introduced to handle the above well-known issues for enhancing the performance. Those methods have shown valuable contributions, but the problems have been incompletely dealt with, particularly recognizing DTs on large-scale datasets. In this article, we present a comprehensive taxonomy of DT representation in order to purposefully give a thorough overview of the existing methods along with overall evaluations of their obtained performances. Accordingly, we arrange the methods into six canonical categories. Each of them is then taken in a brief presentation of its principal methodology stream and various related variants. The effectiveness levels of the state-of-the-art methods are then investigated and thoroughly discussed with respect to quantitative and qualitative evaluations in classifying DTs on benchmark datasets. Finally, we point out several potential applications and the remaining challenges that should be addressed in further directions. In comparison with two existing shallow DT surveys (i.e., the first one is out of date as it was made in 2005, while the newer one (published in 2016) is an inadequate overview), we believe that our proposed comprehensive taxonomy not only provides a better view of DT representation for the target readers but also stimulates future research activities.

Highly efficient thermophones based on freestanding single-walled carbon nanotube films

2019 ◽  
Vol 4 (5) ◽  
pp. 1158-1163 ◽  
Author(s):  
Stepan A. Romanov ◽  
Ali E. Aliev ◽  
Boris V. Fine ◽  
Anton S. Anisimov ◽  
Albert G. Nasibulin
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
State Of The Art ◽  
Single Walled Carbon Nanotubes ◽  
The State ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Highly Efficient ◽  
Art Performance ◽  
Walled Carbon Nanotubes

We present the state-of-the-art performance of air-coupled thermophones made of thin, freestanding films of randomly oriented single-walled carbon nanotubes (SWCNTs).

scholarly journals 4D printing – revolution or fad?

2014 ◽  
Vol 34 (2) ◽  
pp. 123-127 ◽  
Author(s):  
Eujin Pei
Keyword(s):  
Case Studies ◽  
Smart Materials ◽  
State Of The Art ◽  
The State ◽  
Additive Manufacture ◽  
4D Printing ◽  
Content Type ◽  
Potential Applications ◽  
Manufacturing Technologies ◽  
Review State

Purpose – This feature article aims to review state-of-the-art developments in additive manufacture, in particular, 4D printing. It discusses what it is, what research has been carried out and maps potential applications and its future impact. Design/methodology/approach – The article first defines additive manufacturing technologies and goes on to describe the state-of-the-art. Following which the paper examines several case studies and maps a trend that shows an emergence of 4D printing. Findings – The case studies highlight a particular specialization within additive manufacture where the use of adaptive, biomimetic composites can be programmed to reshape, or have embedded properties or functionality that transform themselves when subjected to external stimuli. Originality/value – This paper discusses the state-of-the-art of additive manufacture, discussing strategies that can be used to reduce the print process (such as through kinematics); and the use of smart materials where parts adapt themselves in response to the surrounding environment supporting the notion of self-assemblies.

SINGLE-WALLED CARBON NANOTUBES: APPLICATIONS IN HIGH FREQUENCY ELECTRONICS

2006 ◽  
Vol 16 (04) ◽  
pp. 977-999 ◽  
Author(s):  
P. J. BURKE ◽  
C. RUTHERGLEN ◽  
Z. YU
Keyword(s):  
Carbon Nanotubes ◽  
High Frequency ◽  
State Of The Art ◽  
Single Walled Carbon Nanotubes ◽  
Device Performance ◽  
Fundamental Parameters ◽  
Single Walled Carbon ◽  
Theoretical Predictions ◽  
Potential Applications ◽  
Walled Carbon Nanotubes

In this paper, we review the potential applications of single-walled carbon nanotubes in three areas: passives (interconnects), actives (transistors), and antennas. In the area of actives, potential applications include transistors for RF and microwave amplifiers, mixers, detectors, and filters. We review the experimental state of the art, and present the theoretical predictions (where available) for ultimate device performance. In addition, we discuss fundamental parameters such as dc resistance as a function of length for individual, single-walled carbon nanotubes.

scholarly journals The Application of Blockchain in Supply Chain Industry

2021 ◽  
Vol 12 (3) ◽  
pp. 1400-1408
Author(s):  
Leo Willyanto Santoso Et.al
Keyword(s):  
Supply Chain ◽  
Case Studies ◽  
State Of The Art ◽  
The State ◽  
Technological Revolution ◽  
Blockchain Technology ◽  
Potential Applications

This research focuses on analyzing the state of the art of the blockchain technology and in publicizing the potential applications and implementations that the blockchain can deliver to the supply chain. For this, it will be explained in a simple way technology and its operation in the supply chain and case studies of real companies that are currently betting on this technological revolution, capable of improving the efficiency of any process logistic.

Porous and Foamed Amorphous Metals

MRS Bulletin ◽  
2007 ◽  
Vol 32 (8) ◽  
pp. 639-643 ◽  
Author(s):  
Alan H. Brothers ◽  
David C. Dunand
Keyword(s):  
Mechanical Properties ◽  
Shear Band ◽  
Energy Absorption ◽  
State Of The Art ◽  
The State ◽  
Amorphous Metals ◽  
Plastic Bending ◽  
Potential Applications ◽  
Processing Techniques

AbstractThis article reviews the state of the art in the field of porous amorphous metals by describing current processing techniques, mechanical properties, and potential applications. In addition to the reduction in density, the main benefit of introducing porosity in amorphous metals is the improvement in compressive ductility and energy absorption. This ductilizing effect is explained by: (1) shear-band interruption by individual pores at low porosities and (2) stable plastic bending of thin struts at higher porosities, with cellular amorphous metals displaying compressive ductilities of up to 80%.

Periodically-ordered one and two dimensional CdTe QD superstructures: a path forward in photovoltaics

2019 ◽  
Vol 21 (35) ◽  
pp. 19391-19402 ◽  
Author(s):  
Moumita Kar ◽  
Biplab Rajbanshi ◽  
Ritabrata Sarkar ◽  
Sougata Pal ◽  
Pranab Sarkar
Keyword(s):  
State Of The Art ◽  
Theoretical Method ◽  
The State ◽  
Two Dimensional ◽  
Cdte Qds ◽  
1D Chain ◽  
Covalently Linked

By using the state-of-the-art theoretical method, we herein explore the potentiality of covalently linked periodically-ordered 1D chain, 2D hexagonal and square ordered superstructures of CdTe QDs in photovoltaics.

scholarly journals A Survey on Challenges and Progresses in Blockchain Technologies: A Performance and Security Perspective

2019 ◽  
Vol 9 (22) ◽  
pp. 4731 ◽  
Author(s):  
Xiaoying Zheng ◽  
Yongxin Zhu ◽  
Xueming Si
Keyword(s):  
Performance Metrics ◽  
State Of The Art ◽  
The State ◽  
Lessons Learned ◽  
Future Directions ◽  
Research Directions ◽  
Scientific Databases ◽  
Potential Applications ◽  
Industry Sectors ◽  
A Performance

Blockchain naturally fits multiple industry sectors due its characteristics of decentralization, enhanced security, tamper-proof, improved traceability and transparency. However, there is a significant concern of blockchain’s performance, since blockchain trades off its performance for a completely distributed feature, which enhances its security. In this paper, we investigate the state-of-the-art progress of blockchain, mainly from a performance and security perspective. We extracted 42 primary papers from major scientific databases and 34 online technical articles. The objective is to understand the current research trends, challenges and future directions. We briefly introduce the key technologies of blockchain including distributed ledger, cryptography, consensus, smart contracts and benchmarks. We next summarize the performance and security concerns raised in the investigation. We discuss the architectural choices, performance metrics, database management enhancements, and hybrid blockchains, and try to identify the effort that the state-of-the-art has made to balance between the performance and security. We also make experiments on Ethereum and survey other popular blockchain platforms on the scalability feature of blockchain. We later discuss the potential applications and present the lessons learned. Finally, we attempt to identify the open issues and possible research directions.

Titanate and titania nanostructured materials for environmental and energy applications: a review

RSC Advances ◽  
2015 ◽  
Vol 5 (97) ◽  
pp. 79479-79510 ◽  
Author(s):  
Yanyan Zhang ◽  
Zhelong Jiang ◽  
Jianying Huang ◽  
Linda Y. Lim ◽  
Wenlong Li ◽  
...  
Keyword(s):  
Nanostructured Materials ◽  
State Of The Art ◽  
The State ◽  
Energy Applications ◽  
Titania Nanostructures ◽  
Potential Applications

The state-of-the-art development of fabrication strategies of multi-dimensional titanate and titania nanostructures is reviewed first. This is followed by an overview of their potential applications in environmental, energy, and biomedical sectors.

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