Feng Jin

Beijing Institute of Petrochemical Technology

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Mei‐Ling Zheng

Shaanxi University of Chinese Medicine

Xian‐Zi Dong

Technical Institute of Physics and Chemistry

Xuan‐Ming Duan

Chinese Academy of Sciences

Jie Liu

Chinese Academy of Sciences

Yupeng Tian

Anhui University

Zhen‐Sheng Zhao

Exelixis (United States)

Hongping Zhou

Anhui University

Yuanyuan Zhao

Shandong University of Science and Technology

Zheng Zheng

Hefei University of Technology

Jieying Wu

Asia University

Cooperative Institutions

Chinese Academy of Sciences

169

University of Chinese Academy of Sciences

Technical Institute of Physics and Chemistry

Anhui University

University of Science and Technology of China

Zhejiang University

Jilin University

Guizhou University

Nanjing University

Peking University

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Laser emission from dye-doped polymer film in opal photonic crystal cavity

Applied Physics Letters (2006)

Feng Jin Chunfang Li Xian-Zi Dong Wei‐Qiang Chen Xuan‐Ming Duan

The authors demonstrated the lasing emission of the cavity constructed by the allyl derivative of fluorescein doped dendrimer/polymer film and two opal photonic crystals. A dendrimer encapsulated the structure modified laser dye and increased its concentration up to 5.3wt% in the polymer film with high optical gain. Laser emission of the cavity was observed, which is located at 589nm with a full width at half maximum of 1.7nm above the lasing threshold of 15μJ∕pulse. The lasing output was observed at an unordinary angle owing to the superprism effect of opal photonic crystals.

Gain-switching

10.1063/1.2404941

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Citations (44)

Single‐, Dual‐, Triple, and Quadruple‐Wavelength Surface‐Emitting Lasing in Blue‐Phase Liquid Crystal (Adv. Mater. 9/2022)

Advanced Materials (2022)

Jie Liu Yujie Chen Feng Jin Jingxia Wang Tomiki Ikeda

Organic Lasers Single-, dual-, triple- to quad-wavelength lasers can be flexibly manipulated based on polymer-stabilized blue-phase liquid-crystal film, by tuning the bandgap, resonance cavity, order parameter of the laser dye, and even the pump energy. The single-to-quad-wavelength surface-emitting lasers proposed by Feng Jin, Jingxia Wang, and co-workers in article number 2108330, can be employed as coherent light sources for next-generation optical devices.

Blue laser

10.1002/adma.202270071

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λ/12 Super Resolution Achieved in Maskless Optical Projection Nanolithography for Efficient Cross-Scale Patterning

Nano Letters (2021)

Yuhuan Liu Yuanyuan Zhao Feng Jin Xian‐Zi Dong Mei‐Ling Zheng

The emerging demand for device miniaturization and integration prompts the patterning technique of micronano-cross-scale structures as an urgent desire. Lithography, as a sufficient patterning technique, has been playing an important role in achieving functional micronanoscale structures for decades. As a promising alternative, we have proposed and demonstrated the maskless optical projection nanolithography (MLOP-NL) technique for efficient cross-scale patterning. A minimum feature size of 32 nm, which is λ/12 super resolution breaking the optical diffraction limit, has been achieved by a single exposure. Furthermore, multiscale two-dimensional micronano-hybrid structures with the size over hundreds of micrometers and the precision at tens of nanometers have been fabricated by simply controlling the exposure conditions. The proposed MLOP-NL technique provides a powerful tool for achieving cross-scale patterning with both large-scale and precise configuration with high efficiency, which can be potentially used in the fabrication of multiscale integrated microsystems.

Microsystem

10.1021/acs.nanolett.1c00559

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Citations (45)

Non-covalent interaction in metal cation-directed assembly of supramolecular architectures: Synthesis, characterization and crystal structures

Polyhedron (2012)

Feng Jin Fei-Xia Zhou Xiaofei Yang Longhuai Cheng Yaya Duan

Non-covalent interactions

Coordination complex

Supramolecular assembly

10.1016/j.poly.2012.04.001

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Citations (9)

Multi-photon laser lithography of AR-N 4340 photoresist with a spatial resolution at nanoscale

Hong-Zhong Cao Xian‐Zi Dong Feng Jin Mei‐Ling Zheng Zhen‐Sheng Zhao

Multi-photon laser lithography (MPLL) is an economical maskless means for high resolution and intrinsic three-dimensional micro/nanostructures fabrication. Here, we report MPLL of AR-N 4340 photoresist, and a spatial resolution of 40 nm is obtained. The relationships between laser parameters and line morphologies are systematically investigated. In the MPLL process, standing wave interference generated by the reflected light from photoresist/air interface and the incident light could greatly influence the bonding capacity between the fabricated lines and glass substrate. Therefore, lines with width smaller than 150 nm can be easily taken away in the development process. In order to obtain line with higher resolution, two rectangular photoresist plates were fabricated for immobilization of the fabricated lines, and a nanoline with a feature size of 40 nm was achieved between them through carefully adjusting the incident laser power. This work is one of the evidences for high fabricating resolution characteristic of MPLL, and it exhibits the potential for fabricating high resolution semiconductor and electronic micro/nanostructures.

Photoresist

Maskless lithography

Next-generation lithography

10.1117/12.2506365

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Citations (1)

Threshold optimization of polymeric opal photonic crystal cavity as organic solid-state dye-doped laser

Applied Physics Letters (2011)

Lan‐Ting Shi Feng Jin Mei‐Ling Zheng Xian-Zi Dong Wei-Qiang Chen

The authors have demonstrated the optimization of the active layer thickness on the threshold of organic solid-state dye-doped laser (SSDL), which was fabricated by three-dimensional polymeric opal photonic crystal and tert-butyl Rhodamine B (t-Bu-RhB) doped polymer film. Gain media were produced by incorporating t-Bu-RhB into polymer film at 3.0 wt %. The sandwiched laser resonator cavities with different active layer thickness displayed single-mode lasing oscillations in the reflection band gap of the resonator structure. The lasing threshold as low as 1.13 μJ/pulse was achieved. The optimization of active layer would provide an opportunity to accelerate the development of low threshold polymeric SSDLs.

Rhodamine B

Active layer

Rhodamine

Optical cavity

10.1063/1.3561752

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Citations (13)

Carbazole‐Based Anion Ionic Water‐Soluble Two‐Photon Initiator for Achieving 3D Hydrogel Structures

Advanced Functional Materials (2023)

Fan‐Chun Bin Min Guo Teng Li Yongchao Zheng Xian‐Zi Dong

Abstract 3D hydrogel structures fabricated by two‐photon polymerization (TPP) have become attractive in biomedical fields. Generally, conventional organic solvents are toxic and the residues left in the fabricated 3D structures are harmful to cells. Hence, anion ionic carbazole‐based water‐soluble two‐photon initiator (TPI) 3,6‐bis[2‐(1‐methylpyridinium)vinyl]‐9‐methylcarbazole ditosylate (BT) is proposed to construct arbitrary 3D hydrogel structures. Cucurbit[7]uril (CB7) and BT form a host‐guest complex (CB7/BT) with a binding ratio of 1:1, which further improves the water solubility, biocompatibility and nonlinear absorption property of TPI. A water‐soluble photoresist consisting of photoinitiator CB7/BT and monomer poly(ethylene glycol) diacrylate is prepared to explore the TPP fabrication capacity. The electron paramagnetic resonance measurement shows that CB7/BT initiates photopolymerization by alkyl radicals. The laser threshold power of the photoresist is 6.3 mW and the feature size is 127 nm in TPP at 780 nm. The initiator with p ‐toluenesulfonate anion exhibits higher binding energy, larger two‐photon absorption cross‐section and two‐photon fabrication resolution compared with the previous work using iodide as an anion, indicating a promising way to improve the fabrication capacity of water‐soluble TPI through changing the anion ionic group. The proposed strategy will provide high potential for the further application in the biomedical field.

Carbazole

Photoresist

10.1002/adfm.202300293

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Citations (28)

Synthesis, Crystal Structures, and Photoluminescent Properties of Bis(pyrazol-1-yl)methane Derivative and Zn(II) Halide Complexes (ZnLX₂, X˭Cl, Br, I)

Synthesis and Reactivity in Inorganic Metal-Organic and Nano-Metal Chemistry (2014)

Shi-Chao Wang Yan-Can Zhang Feng Jin Wan-Ding Liu Hongping Zhou

A novel bis(pyrazol-1-yl)methane derivative 9-(4-(di(1H-pyrazol-1-yl) -methyl) phenyl)-9H-carbazole (L) and its zinc halide complexes (ZnLX2, X = Cl (1), Br (2), and I (3)) were prepared and fully characterized. The structures of the ligand (L) and complexes 2 and 3 were also characterized by single-crystal X-ray diffraction analysis. The results reveal that the central zinc(II) atom in the complexes is coordinated by two nitrogen atoms from ligands (L) and two halide anion forming a distorted tetrahedron coordination geometry. And then the hydrogen bonding interactions between the molecules from 1D to 3D supramolecular structures were investigated. Furthermore, the photophysical properties of the complexes 1–3 and L were investigated both experimentally and theoretically. The experimental results are consistent with that of the theoretical calculation.

Tetrahedral molecular geometry

Derivative (finance)

10.1080/15533174.2013.841230

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Citations (2)

Triphenylamine-modified quinoxaline derivatives as two-photon photoinitiators

New Journal of Chemistry (2009)

Xingbo Cao Feng Jin Yingfeng Li Weiqiang Chen Xuan‐Ming Duan

Two new chromophores, triphenylamine-modified quinoxaline (TPAQ) and benzoquinoxaline (TPABQ), were synthesized, and their linear spectroscopy and two-photon absorption properties were investigated. For comparison, 4-ethoxyphenyl-substituted quinoxaline (EOQ) and benzoquinoxaline (EOBQ) were prepared. The results showed that TPAQ possesses a high fluorescence quantum yield and a high δ2PA value of >160 GM in the laser light wavelength range of 780–820 nm, and is superior to most common benzil-type compounds as a photoinitiator in two-photon initiated polymerization.

Triphenylamine

Quinoxaline

Benzil

Quantum yield

Chromophore

10.1039/b900464e

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Citations (31)

PAR volume 138 issue 8 Cover and Back matter

Parasitology (2011)

Alan Walker Vítor Ennes-Vidal Rubén Castro Constança Britto Héctor Barrabin

An abstract is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Content (measure theory)

10.1017/s003118201100103x

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