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24 Results Found

  • Article
  • Open Access
97 Citations
9,239 Views
12 Pages

Preparation of Multicolor Photoluminescent Carbon Dots by Tuning Surface States

  • Kai Jiang,
  • Xiangyu Feng,
  • Xiaolu Gao,
  • Yuhui Wang,
  • Congzhong Cai,
  • Zhongjun Li and
  • Hengwei Lin

The achievements of multicolor photoluminescent (PL)-emissive carbon dots (CDs), particularly red to near infrared (NIR), are critical for their applications in optoelectronic devices and bioimaging, but it still faces great challenges to date. In th...

  • Article
  • Open Access
12 Citations
5,398 Views
12 Pages

Sequential Growth of Uniform β-NaYF4@β-NaLnF4 (Ln = Y, Lu, Yb) Microcrystals with Luminescent Properties of Multicolor Tuning and Dual-Mode Emission

  • Dandan Ju,
  • Feng Song,
  • Yingdong Han,
  • Wenjing Cui,
  • Aihua Zhou,
  • Shujing Liu,
  • Xueqin Wang,
  • Ming Feng and
  • Chengguo Ming

14 December 2017

We synthesized the uniform core-shell microstructured compounds with hexagonal phase NaYF4:Er/Yb microrods as the core and hexagonal phase NaLnF4 (NaYbF4, NaLuF4:Yb/Tm, NaYF4:Yb/Er, NaYF4:Eu) as the shell based on the hydrothermal reaction. These mic...

  • Article
  • Open Access
16 Citations
2,602 Views
13 Pages

13 June 2022

The ability to manipulate the luminescent color, intensity and long lifetime of nanophosphors is important for anti-counterfeiting applications. Unfortunately, persistent luminescence materials with multimode luminescent features have rarely been rep...

  • Article
  • Open Access
11 Citations
2,509 Views
16 Pages

22 February 2023

To improve the control precision of the nonlinear register system for flexographic printing, a feedforward active disturbance rejection control (ADRC) parameter self-tuning decoupling control strategy based on radial basis function (RBF) is proposed...

  • Article
  • Open Access
705 Views
20 Pages

A self-tuning control strategy for Active Disturbance Rejection Control (ADRC) parameters based on a Radial Basis Function (RBF) neural network is proposed to improve the control accuracy of the roll-to-roll flexographic printing multi-color register...

  • Article
  • Open Access
16 Citations
3,835 Views
14 Pages

Dual-Wavelength Excited Intense Red Upconversion Luminescence from Er3+-Sensitized Y2O3 Nanocrystals Fabricated by Spray Flame Synthesis

  • Xiaofan Zhao,
  • Zeyun Wu,
  • Zining Yang,
  • Xu Yang,
  • Yiyang Zhang,
  • Maohui Yuan,
  • Kai Han,
  • Changqing Song,
  • Zongfu Jiang and
  • Xiaojun Xu
  • + 2 authors

28 July 2020

Er3+-sensitized upconversion nanoparticles (UCNPs) have attracted great attention due to their tunable upconversion (UC) emissions, low cytotoxicity, high resistance to photobleaching and especially multiple effective excitation wavelengths. However,...

  • Article
  • Open Access
2 Citations
1,121 Views
11 Pages

15 November 2024

Multicolor emission and dynamic color tuning with large spectral range are challenging to realize but critically important in many areas of technology and daily life, such as general lighting, display, multicolor detection and multi-band communicatio...

  • Article
  • Open Access
5 Citations
3,074 Views
10 Pages

16 January 2023

The inkjet printing method is a promising method to deposit polymer and functional nanoparticles at the microscale. It can be applied in the fabrication of multicolor polymer light emitting diodes (polyLEDs), polymer base electronics, multicolor colo...

  • Review
  • Open Access
25 Citations
12,938 Views
46 Pages

29 April 2010

We have reviewed the generation and amplification of wavelength-tunable multicolored femtosecond laser pulses using cascaded four-wave mixing (CFWM) in transparent bulk media, mainly concentrating on our recent work. Theoretical analysis and calculat...

  • Article
  • Open Access
16 Citations
3,896 Views
11 Pages

Simultaneous Dual-mode Emission and Tunable Multicolor in the Time Domain from Lanthanide-doped Core-shell Microcrystals

  • Dandan Ju,
  • Feng Song,
  • Adnan Khan,
  • Feifei Song,
  • Aihua Zhou,
  • Xiaoli Gao,
  • Huimin Hu,
  • Xu Sang and
  • Victor Zadkov

7 December 2018

The dual-mode emission and multicolor outputs in the time domain from core-shell microcrystals are presented. The core-shell microcrystals, with NaYF4:Yb/Er as the core and NaYF4:Ce/Tb/Eu as the shell, were successfully fabricated by employing the hy...

  • Article
  • Open Access
8 Citations
2,631 Views
10 Pages

Photophysical Characteristics of Multicolor Emitting MDMO-PPV–DMP/ZnO Hybrid Nanocomposites

  • Bandar Ali Al-Asbahi,
  • Arwa Alhamedi Alanezi and
  • Mohamad S. AlSalhi

27 January 2022

The tuning of photophysical properties of the poly[2-methoxy-5-(3,7-dimethyl-octyloxy)-1,4-phenylenevinylene]—end capped with dimethylphenyl (DMP), MDMO-PPV–DMP, was achieved by incorporation of ZnO NPs with various contents. Hybrid nanoc...

  • Article
  • Open Access
2 Citations
3,220 Views
11 Pages

29 November 2022

Preparing mixed crystals composed of two or more components is one of the useful approaches to not only modifying the physical properties and chemical reactivity of molecular crystals but also creating their novel functionality. Here we report prepar...

  • Article
  • Open Access
15 Citations
2,611 Views
14 Pages

Multicolor Luminescent Carbon Dots: Tunable Photoluminescence, Excellent Stability, and Their Application in Light-Emitting Diodes

  • Longshi Rao,
  • Qing Zhang,
  • Bin Sun,
  • Mingfu Wen,
  • Jiayang Zhang,
  • Guisheng Zhong,
  • Ting Fu and
  • Xiaodong Niu

9 September 2022

Carbon dots (CDs) are attracting much interest due to their excellent photoelectric properties and wide range of potential applications. However, it is still a challenge to regulate their bandgap emissions to achieve full-color CDs with high emission...

  • Article
  • Open Access
7 Citations
3,164 Views
15 Pages

Light Conversion upon Photoexcitation of NaBiF4:Yb3+/Ho3+/Ce3+ Nanocrystalline Particles

  • Enrico Trave,
  • Michele Back,
  • Davide Pollon,
  • Emmanuele Ambrosi and
  • Leonardo Puppulin

9 February 2023

NaBiF4 nanocrystalline particles were synthesized by means of a facile precipitation synthesis route to explore upconversion emission properties when doped with lanthanide ions. In particular, the incorporation of the Yb3+-Ho3+-Ce3+ triad with contro...

  • Article
  • Open Access
6 Citations
2,583 Views
9 Pages

Tuning Solid-State Emission of 9-Anthraldehyde through Cocrystal Engineering

  • Ying Sun,
  • Yang Ye,
  • Luguang Qi,
  • Yunhe Bai,
  • Xingchen Hu,
  • Shutian Xuanyuan and
  • Chuang Xie

1 April 2023

The regulation of solid-state emission based on cocrystal engineering is an emerging strategy for developing next-generation luminescent materials. Here, three luminescent cocrystals (AA-DITFB, AA-TFTPA and AA-TCNB) of 9-anthraldehyde (9-AA) are repo...

  • Article
  • Open Access
5 Citations
4,311 Views
13 Pages

1 April 2021

The increasing interest in luminescent waveguides, applied as light concentrators, sensing elements, or decorative illuminating systems, is fostering efforts to further expand their functionality. Yarns and textiles based on a combination of distinct...

  • Feature Paper
  • Article
  • Open Access
7 Citations
2,052 Views
7 Pages

Single-Mode-Tuned Tricolor Emissions of Upconversion/Afterglow Hybrids for Anticounterfeiting Applications

  • Yanqing Hu,
  • Songqi Li,
  • Shijie Yu,
  • Shuoran Chen,
  • Yuyang Yan,
  • Yan Liu,
  • Yuanpeng Chen,
  • Caosong Chen,
  • Qiyue Shao and
  • Yingshuai Liu

9 September 2022

This work presents a highly secure anticounterfeiting strategy based on upconversion/afterglow hybrids with tricolor emissions tuned by a single 975 nm laser. The hybrids are composed of NaYF4:Yb/Tm and NaYF4:Yb/Er microrods and CaS:Eu2+ afterglow ph...

  • Article
  • Open Access
7 Citations
2,369 Views
17 Pages

9 May 2022

In the paper, we introduce a new model that addresses the generation of quantum droplets (QDs) in the binary Bose–Einstein condensate (BEC) mixture with mutually symmetric spinor components loaded in multi-color optical lattices (MOLs) of comme...

  • Article
  • Open Access
1 Citations
1,931 Views
9 Pages

Snapshot Quantitative Phase Imaging with Acousto-Optic Chromatic Aberration Control

  • Christos Alexandropoulos,
  • Laura Rodríguez-Suñé and
  • Martí Duocastella

20 July 2025

The transport of intensity equation enables quantitative phase imaging from only two axially displaced intensity images, facilitating the characterization of low-contrast samples like cells and microorganisms. However, the rapid selection of the corr...

  • Article
  • Open Access
1 Citations
2,051 Views
15 Pages

Ligand-Tuned Multi-Color Luminescence of Single Aluminum (III) Ion Atomic Centers and Their Selective Sensitivity to Different Metal Ions

  • Qian Wang,
  • Longlong Li,
  • Qinglin Tang,
  • Jin Liu,
  • Yao Wang,
  • Jiuxing Wang,
  • Matt J. Kipper,
  • Haijiao Xie,
  • Laurence A. Belfiore and
  • Jianguo Tang

27 July 2022

Achieving multi-color luminescence with a single atomic center in transition metal complexes is a challenge. In this work, luminescent materials with tunable emission properties were realized by complexation between aluminum (III) ions with the ligan...

  • Communication
  • Open Access
11 Citations
5,454 Views
11 Pages

Multimode, Aperiodic Terahertz Surface-Emitting Laser Resonators

  • Simone Biasco,
  • Lianhe Li,
  • Edmund H. Linfield,
  • A. Giles Davies and
  • Miriam S. Vitiello

Quasi-crystal structures are conventionally built following deterministic generation rules although they do not present a full spatial periodicity. If used as laser resonators, they open up intriguing design possibilities that are simply not possible...

  • Review
  • Open Access
2 Citations
2,427 Views
44 Pages

14 March 2025

The 2,6-bis(pyrazol-1-yl)pyridine (bpp) ligand family is widely recognized for its versatile coordination abilities and broad functionalization potential. This review examines bpp and its modifications at the pyridine ring’s 4-position, focusin...

  • Article
  • Open Access
9 Citations
2,599 Views
10 Pages

Preparation and Fluorescent Wavelength Control of Multi-Color Nitrogen-Doped Carbon Nano-Dots

  • Wenli Li,
  • Ju Tang,
  • Yuzhao Li,
  • Han Bai,
  • Weizuo Zhang,
  • Jin Zhang,
  • Yiming Xiao and
  • Wen Xu

25 November 2021

It is known that, by taking advantage of heteroatom doping, the electronic states and transition channels in carbon nano-dots (CNDs) can be effectively modulated. Thus, the photoluminescence (PL) properties of CNDs can be changed. For potential appli...

  • Review
  • Open Access
56 Citations
9,538 Views
40 Pages

25 May 2022

Although there is significant progress in the research of carbon dots (CDs), some challenges such as difficulty in large-scale synthesis, complicated purification, low quantum yield, ambiguity in structure-property correlation, electronic structures,...