Luminescent polymorphic crystals: mechanoresponsive and multicolor-emissive properties

CrystEngComm ◽  
2022 ◽  
Author(s):  
Suguru Ito
Keyword(s):  
Optoelectronic Devices ◽  
Organic Crystals ◽  
Security Technologies ◽  
The Past ◽  
Polymorphic Crystals ◽  
Potential Applications

Mechanoresponsive luminescent organic crystals have recently attracted increasing interest owing to their potential applications in advanced optoelectronic devices, mechanosensors, security technologies, etc. In the past few years, an increasing number...

scholarly journals Multi-color mechanochromic luminescence of three polymorphic crystals of a donor–acceptor-type benzothiadiazole derivative

CrystEngComm ◽  
2021 ◽  
Author(s):  
Suguru Ito ◽  
Sayaka Nagai ◽  
Takashi Ubukata ◽  
Takashi Tachikawa
Keyword(s):  
Color Change ◽  
Mechanical Force ◽  
Organic Crystals ◽  
The Past ◽  
Polymorphic Crystals ◽  
Donor Acceptor ◽  
Mechanochromic Luminescence

The past decade has witnessed rapid advances in the development of organic crystals that exhibit mechanochromic luminescence (MCL), i.e., the reversible color change of photoluminescence induced by mechanical force. However,...

scholarly journals Organic magnetoelectric and optomagnetic couplings: perspectives for organic spin optoelectronics

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Zhongxuan Wang ◽  
Wei Qin
Keyword(s):  
Ferromagnetic Materials ◽  
The Past ◽  
Potential Applications ◽  
Further Development

AbstractOver the past years, the development of organic ferromagnetic materials has been investigated worldwide for potential applications. Due to the couplings among the charge, orbit, spin, and phonon in organic ferromagnetic materials, magnetoelectric, and optomagnetic couplings have been realized and observed. In this review, progress in organic magnetoelectric and optomagnetic couplings is presented, and the mechanisms behind the phenomena are also briefly summarized. Hopefully, the understanding of magnetoelectric and optomagnetic couplings could provide guidance for the further development of organic spin optoelectronics.

scholarly journals The crucial roles of N6-methyladenosine (m6A) modification in the carcinogenesis and progression of colorectal cancer

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Zhihao Fang ◽  
Yiqiu Hu ◽  
Jinhui Hu ◽  
Yanqin Huang ◽  
Shu Zheng ◽  
...  
Keyword(s):  
Gene Expression ◽  
Colorectal Cancer ◽  
Nuclear Export ◽  
Messenger Rna ◽  
Regulatory Proteins ◽  
Biological Processes ◽  
The Past ◽  
Common Cancer ◽  
Potential Applications ◽  
Regulated Gene Expression

AbstractAs the predominant modification in RNA, N6-methyladenosine (m6A) has attracted increasing attention in the past few years since it plays vital roles in many biological processes. This chemical modification is dynamic, reversible and regulated by several methyltransferases, demethylases and proteins that recognize m6A modification. M6A modification exists in messenger RNA and affects their splicing, nuclear export, stability, decay, and translation, thereby modulating gene expression. Besides, the existence of m6A in noncoding RNAs (ncRNAs) could also directly or indirectly regulated gene expression. Colorectal cancer (CRC) is a common cancer around the world and of high mortality. Increasing evidence have shown that the changes of m6A level and the dysregulation of m6A regulatory proteins have been implicated in CRC carcinogenesis and progression. However, the underlying regulation laws of m6A modification to CRC remain elusive and better understanding of these mechanisms will benefit the diagnosis and therapy. In the present review, the latest studies about the dysregulation of m6A and its regulators in CRC have been summarized. We will focus on the crucial roles of m6A modification in the carcinogenesis and development of CRC. Moreover, we will also discuss the potential applications of m6A modification in CRC diagnosis and therapeutics.

Two-Dimensional Conjugated Microporous Polymers Films: Fabrication Strategies and Potential Applications

2021 ◽  
Author(s):  
Juqing Liu ◽  
Zhengdong Liu ◽  
Yuhang Yin ◽  
Mustafa Eginligil ◽  
Laiyuan Wang ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Microporous Polymers ◽  
The Past ◽  
Potential Applications ◽  
Conjugated Microporous Polymers

Two-dimensional conjugated microporous polymers (2D CMPs) are the sheet/film-like CMPs with amorphous, permanent porous and π-conjugated structures, which have attracted considerable attention over the past few years. Owing to the...

Polymer Electroluminescent Devices

MRS Bulletin ◽  
1997 ◽  
Vol 22 (6) ◽  
pp. 31-38 ◽  
Author(s):  
Yang Yang
Keyword(s):  
New York ◽  
Quantum Efficiency ◽  
Operating Voltage ◽  
Organic Crystals ◽  
New York University ◽  
Research Activity ◽  
Information Displays ◽  
Potential Applications ◽  
Bandgap Semiconductors ◽  
The 1960S

Electroluminescence (EL) is the emission of light generated from the radiative recombination of electrons and holes electrically injected into a luminescent semiconductor. Conventional EL devices are made of inorganic direct-bandgap semiconductors, such as GaAs and InGaAs. Recently EL devices based on conjugated organic small molecules and polymers have attracted increasing attention due to easy fabrication of large areas, unlimited choice of colors, and mechanical flexibility. Potential applications of these organic/polymeric EL devices include backlights for displays, alphanumeric displays, and high-density information displays.Electroluminescence from an organic material was first demonstrated in the 1960s on anthracene crystals by Pope et al. at New York University. Subsequently several other groups also observed this phenomenon in organic crystals and thin films. These organic EL devices had high operating voltages and low quantum efficiency. Consequently they did not attract much attention. In 1987 a breakthrough was made by Tang and VanSlyke at Eastman Kodak who found that by using multilayers of sublimated organic molecules, the operating voltage of the organic EL devices was dramatically reduced and the quantum efficiency was significantly enhanced. This discovery touched off a flurry of research activity, especially in Japan. The Japanese researchers, as welt as the group at Kodak, have since improved the device efficiency and lifetime to meet commercial requirements. This progress is reviewed by Tsutsui in this issue.

Quadrature entanglement in the microwave domain with a phase locking protocol

2021 ◽  
Author(s):  
Tianli Wei ◽  
Dewei Wu ◽  
Qiang Miao ◽  
Chunyan Yang
Keyword(s):  
Relative Phase ◽  
Phase Locking ◽  
Error Signal ◽  
Parametric Amplifiers ◽  
Theoretical Derivation ◽  
Entanglement Generation ◽  
The Past ◽  
Potential Applications ◽  
Locking Protocol ◽  
Quantum Technology

Abstract Entanglement has attracted great attention in the past few decades due to its potential applications in the field of quantum information protocols. From now, achieving excellent phase locking in entanglement generation is significant yet a challenging task in cryogenic quantum technology. In this work, we propose and demonstrate a comprehensive paradigm of phase locking protocol for quadrature entanglement at the microwave wavelengths. We carry out a theoretical derivation of the quadrature entangled microwaves generated based on Josephson Parametric Amplifiers (JPAs), and the phase locking error signal, which is used to lock the relative phase of zero between the two quadrature squeezed microwaves. Simulating data for the phase locking scheme are shown under different parameter settings for comparison. Finally, we use the proposed phase locking scheme to enable a stable output of quadrature entangled microwave.

Reaction Pathways to 2-Aminothiophenes and Thiophene-3-carbonitriles

2009 ◽  
Vol 62 (5) ◽  
pp. 402 ◽  
Author(s):  
Luigi Aurelio ◽  
Bernard L. Flynn ◽  
Peter J. Scammells
Keyword(s):  
Comparative Studies ◽  
Reaction Pathway ◽  
Reaction Pathways ◽  
Synthesis And Characterization ◽  
The Past ◽  
Adenosine A1 ◽  
Unexpected Reaction ◽  
Potential Applications ◽  
A1 Receptor

Over the past two decades 2-amino-3-benzoylthiophenes have been found to act as allosteric enhancers of the adenosine A1 receptor (A1AR). As such, compounds of this type have potential applications in the therapy of a variety of disorders by enhancing A1AR activation. Initial studies in this field identified various 2-amino-3-benzoylthiophenes as potential leads and of these PD 81723 1a has become the benchmark for comparative studies due to its favourable ratio of allosteric enhancement to antagonism. Surprisingly the synthesis and characterization of PD 81723 1a has not been previously reported. Herein we report the synthesis and characterization of this important A1AR allosteric enhancer. As part of this study we also found an unexpected reaction pathway to 2-phenylthiophene-3-carbonitriles.

scholarly journals Integrated Photodetectors Based on Group IV and Colloidal Semiconductors: Current State of Affairs

Micromachines ◽  
2020 ◽  
Vol 11 (9) ◽  
pp. 842
Author(s):  
Principia Dardano ◽  
Maria Antonietta Ferrara
Keyword(s):  
Optoelectronic Devices ◽  
Group Iv ◽  
Future Research ◽  
New Materials ◽  
Light Sensing ◽  
The Past ◽  
Group Iv Semiconductors ◽  
Current State ◽  
State Of Affairs ◽  
Manufacturing Technologies

With the aim to take advantage from the existing technologies in microelectronics, photodetectors should be realized with materials compatible with them ensuring, at the same time, good performance. Although great efforts are made to search for new materials that can enhance performance, photodetector (PD) based on them results often expensive and difficult to integrate with standard technologies for microelectronics. For this reason, the group IV semiconductors, which are currently the main materials for electronic and optoelectronic devices fabrication, are here reviewed for their applications in light sensing. Moreover, as new materials compatible with existing manufacturing technologies, PD based on colloidal semiconductor are revised. This work is particularly focused on developments in this area over the past 5–10 years, thus drawing a line for future research.

Assessment of Deformation using the Focused Ion Beam Technique

2000 ◽  
Vol 6 (S2) ◽  
pp. 530-531
Author(s):  
M.G. Burke ◽  
P.T. Duda ◽  
G. Botton ◽  
M. W. Phaneuf
Keyword(s):  
Focused Ion Beam ◽  
Ion Beam ◽  
Site Specificity ◽  
Alloy 600 ◽  
The Past ◽  
Transmission Electron ◽  
Wide Range ◽  
Potential Applications ◽  
Beam Technique ◽  
Significant Attention

Focused Ion Beam (FIB) micromachining techniques have gained significant attention over the past few years as a promising method for the preparation of a variety of metallic and nonmetallic materials for subsequent characterization using transmission electron microscopy (TEM) The advantage of the FIB in terms of site specificity and speed for the preparation of uniform electron transparent sections has opened a wide range of potential applications in materials characterization. The ability to image the sample in the FIB can also provide important microstructural data for materials analysis. In this study, both conventionally electropolished and FIB-ed specimens were prepared in order to characterize the microstructure of a commercially-produced tube of Alloy 600 (approximately Ni-15 Cr-10 Fe- 0.05 C). The electropolished samples were prepared using a solution of 20% HClO4 - 80% CH3OH at ∼-40°C. The FIB sections were obtained from a cross-section of the tube that had been mechanically thinned to ∼100 μm. The section was thinned in a Micrion 2500 FIB system with a Ga ion beam at 50 kV accelerating voltage.

EDMC: An Energy-Efficient Distributed Multi-Hop Clustering Approach for Wireless Sensor Networks

2012 ◽  
Vol 198-199 ◽  
pp. 1668-1671
Author(s):  
Zhu Guo Li ◽  
Bing Wen Wang ◽  
Li Zhu Feng
Keyword(s):  
Wireless Sensor Networks ◽  
Energy Consumption ◽  
Sensor Networks ◽  
Energy Efficient ◽  
Wireless Sensor ◽  
Clustering Method ◽  
The Past ◽  
Decrease Energy Consumption ◽  
Potential Applications ◽  
Clustering Approach

The past few years have witnessed increasing focus on the potential applications of wireless sensor networks. Sensors in these networks are expected to be remotely dispersed in large number and to operate autonomously and unattended. Clustering is a widely used technique that can enhance scalability and decrease energy consumption over sensor networks. We present an energy-efficient distributed multi-hop clustering approach for sensor networks, which combined multi-hop transmission with clustering method, aiming to balance the energy dissipation and prolong the whole network lifetime. Simulations showed that the protocol proposed worked nearly 100% more efficient compared with LEACH and HEED.

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