A viologen-based coordination polymer exhibiting high sensitivity towards various light sources

A luminescent nucleotide/Tb3+ coordination polymer (CP) was synthesized using adenosine triphosphate (ATP) molecules as a bridge ligand and Phen as a sensitizer, which showed high sensitivity and selectivity for Fe2+.

Download Full-text

Parametric Studies on ArtificialMorphoButterfly Wing Scales for Optical Device Applications

Journal of Nanomaterials ◽

10.1155/2015/451834 ◽

2015 ◽

Vol 2015 ◽

pp. 1-7

Author(s):

Hyun Myung Kim ◽

Sang Hyeok Kim ◽

Gil Ju Lee ◽

Kyujung Kim ◽

Young Min Song

Keyword(s):

Gallium Phosphide ◽

High Sensitivity ◽

Membrane Thickness ◽

Light Sources ◽

Vapor Sensing ◽

Reflected Light ◽

Device Applications ◽

Parametric Studies ◽

Geometrical Effects ◽

Rigorous Coupled Wave

We calculated diffraction efficiencies of grating structures inspired byMorphobutterfly wings by using a rigorous coupled-wave analysis method. The geometrical effects, such as grating width, period, thickness, and material index, were investigated in order to obtain better optical performance. Closely packed grating structures with an optimized membrane thickness show vivid reflected colors and provide high sensitivity to surrounding media variations, which is applicable to vapor sensing or healthcare indicators.Morphostructures with high index materials such as zinc sulfide or gallium phosphide generate white color caused by broadband reflection that can be used as reflected light sources for display applications.

Download Full-text

Inter-Pulse Spectroscopy Based on Room-Temperature Pulsed Quantum-Cascade Laser for N2O Detection

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.128-129.607 ◽

2011 ◽

Vol 128-129 ◽

pp. 607-610

Author(s):

Min Wang ◽

Jie Chen ◽

Niu Liu ◽

Ya Wang

Keyword(s):

Absorption Spectrum ◽

Room Temperature ◽

Single Point ◽

High Sensitivity ◽

Fast Response ◽

Trace Gas ◽

High Resolution Spectrum ◽

Light Sources ◽

Quantum Cascade ◽

Pulse Spectroscopy

Mid-infrared lasers are very suitable for high-sensitive trace-gases detection for their wavelengths cover the fundamental absorption lines of most gases. Quantum-cascade (QC) lasers have been demonstrated to be ideal light sources with its special power, tuning and capability of operating in room-temperature. All these merits make it appropriate for the high resolution spectrum analysis. The absorption spectrum monitoring technology based on the QC laser pulsed operating in the room temperature, combining with the strong absorption of the gas molecule in the basic frequency, has become an effective way to monitor the trace gas with the characteristic of high sensitivity, good selectivity and fast response. In this paper, the inter-pulse spectroscopy based on a room-temperature distributed-feedback pulsed QC laser was introduced. Our approach to trace gas monitoring with QC lasers relies on short current pulses which are designed to produce even shorter light pulses. Each pulse corresponds to a single point in a spectrum. The N2O absorption spectrum centered at 2178.2cm-1was also obtained.

Download Full-text

Chaos of interband cascade lasers in the mid-infrared regime

10.21203/rs.3.rs-111694/v1 ◽

2020 ◽

Author(s):

Yu Deng ◽

Zhuo-Fei Fan ◽

Shiyuan Zhao ◽

Frédéric Grillot ◽

Cheng Wang

Keyword(s):

Semiconductor Lasers ◽

Near Infrared ◽

Optical Feedback ◽

Nonlinear Dynamical Systems ◽

Initial Conditions ◽

Electrical Power ◽

High Sensitivity ◽

Light Sources ◽

Mid Infrared ◽

Operation Conditions

Abstract Chaos in nonlinear dynamical systems is featured with irregular appearance and with high sensitivity to initial conditions. Near-infrared semiconductor lasers subject to optical feedback from an external reflector are popular chaotic light sources, which have enabled multiple applications. Here, we report the fully-developed chaos in a mid-infrared interband cascade laser with external optical feedback. The chaos leads to significant electrical power enhancement over a frequency span of 500 MHz. In addition, the laser also exhibits periodic oscillations or low-frequency fluctuations before producing chaos, depending on the operation conditions. This work paves the way for extending chaos investigations from the near-infrared regime to the mid-infrared regime, which can stimulate potential applications in this spectral range.

Download Full-text

A 2D lanthanum coordination polymer as a multiresponsive luminescent chemosensor with fast response and high sensitivity

Journal of Solid State Chemistry ◽

10.1016/j.jssc.2020.121173 ◽

2020 ◽

Vol 283 ◽

pp. 121173 ◽

Cited By ~ 1

Author(s):

Yuhao Wang ◽

Yu’e Yu ◽

Jing Lu ◽

Yunwu Li ◽

Suna Wang ◽

...

Keyword(s):

Coordination Polymer ◽

High Sensitivity ◽

Fast Response

Download Full-text

Ratiometric fluorescence determination of the anthrax biomarker 2,6-dipicolinic acid using a Eu3+/Tb3+-doped nickel coordination polymer

New Journal of Chemistry ◽

10.1039/c9nj04501e ◽

2019 ◽

Vol 43 (46) ◽

pp. 18259-18267 ◽

Cited By ~ 7

Author(s):

Hang Lei ◽

Cui-Xing Qi ◽

Xuan-Bo Chen ◽

Tian Zhang ◽

Ling Xu ◽

...

Keyword(s):

Coordination Polymer ◽

Dipicolinic Acid ◽

High Sensitivity ◽

Fluorescence Sensor ◽

Rapid Response ◽

Ratiometric Fluorescence ◽

Fluorescence Determination

Tb3+0.6/Eu3+0.4@Ni-BTC is a quantitative ratiometric fluorescence sensor for DPA detection with high sensitivity, anti-interference, rapid response and durability.

Download Full-text

A dual-emitting Tb(iii)&Yb(iii)-functionalized coordination polymer: a “turn-on” sensor for N-methylformamide in urine and a “turn-off” sensor for methylglyoxal in serum

Dalton Transactions ◽

10.1039/c9dt02643f ◽

2019 ◽

Vol 48 (38) ◽

pp. 14408-14417 ◽

Cited By ~ 5

Author(s):

Xubin Zheng ◽

Ruiqing Fan ◽

Haoyang Lu ◽

Bowen Wang ◽

Jingkun Wu ◽

...

Keyword(s):

Coordination Polymer ◽

Fluorescent Probe ◽

High Sensitivity ◽

Turn On ◽

Postsynthetic Modification ◽

Sensitivity And Selectivity

A fluorescent probe designed and prepared through postsynthetic modification (PSM) showed high sensitivity and selectivity for N-methylformamide (NMF) in urine and methylglyoxal (MGO) in serum.

Download Full-text