Two-Dimensional MoO2 Nanosheet Composite Hydrogels with High Transmittance and Excellent Photothermal Property for Near-Infrared Responsive Actuators and Microvalves

2021 ◽  
Author(s):  
Zhichao Sun ◽  
Cong Wei ◽  
Wentao Liu ◽  
Hao Liu ◽  
Jiahui Liu ◽  
...  
Keyword(s):  
Near Infrared ◽  
Two Dimensional ◽  
Composite Hydrogels ◽  
Photothermal Property

Two-dimensional moisture content and size measurement of pharmaceutical granules after fluid bed drying using near-infrared chemical imaging

2021 ◽  
pp. 120069
Author(s):  
Michael Ghijs ◽  
Brecht Vanbillemont ◽  
Niels Nicolaï ◽  
Thomas De Beer ◽  
Ingmar Nopens
Keyword(s):  
Moisture Content ◽  
Near Infrared ◽  
Chemical Imaging ◽  
Two Dimensional ◽  
Size Measurement ◽  
Fluid Bed

scholarly journals Two-dimensional perovskites with alternating cations in the interlayer space for stable light-emitting diodes

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Yiyue Zhang ◽  
Masoumeh Keshavarz ◽  
Elke Debroye ◽  
Eduard Fron ◽  
Miriam Candelaria Rodríguez González ◽  
...  
Keyword(s):  
Thin Films ◽  
Near Infrared ◽  
Light Emitting Diodes ◽  
Interlayer Space ◽  
High Current Density ◽  
Operational Stability ◽  
Infrared Light ◽  
Two Dimensional ◽  
Commercial Development ◽  
Light Emitting

Abstract Lead halide perovskites have attracted tremendous attention in photovoltaics due to their impressive optoelectronic properties. However, the poor stability of perovskite-based devices remains a bottleneck for further commercial development. Two-dimensional perovskites have great potential in optoelectronic devices, as they are much more stable than their three-dimensional counterparts and rapidly catching up in performance. Herein, we demonstrate high-quality two-dimensional novel perovskite thin films with alternating cations in the interlayer space. This innovative perovskite provides highly stable semiconductor thin films for efficient near-infrared light-emitting diodes (LEDs). Highly efficient LEDs with tunable emission wavelengths from 680 to 770 nm along with excellent operational stability are demonstrated by varying the thickness of the interlayer spacer cation. Furthermore, the best-performing device exhibits an external quantum efficiency of 3.4% at a high current density (J) of 249 mA/cm2 and remains above 2.5% for a J up to 720 mA cm−2, leading to a high radiance of 77.5 W/Sr m2 when driven at 6 V. The same device also shows impressive operational stability, retaining almost 80% of its initial performance after operating at 20 mA/cm2 for 350 min. This work provides fundamental evidence that this novel alternating interlayer cation 2D perovskite can be a promising and stable photonic emitter.

scholarly journals Magnetic tri-bead microrobot assisted near-infrared triggered combined photothermal and chemotherapy of cancer cells

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xiaoxia Song ◽  
Zhi Chen ◽  
Xue Zhang ◽  
Junfeng Xiong ◽  
Teng Jiang ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Drug Delivery ◽  
Cancer Cells ◽  
Photothermal Therapy ◽  
Near Infrared ◽  
Stimuli Responsive ◽  
Lung Cancer Cell ◽  
Precise Movement ◽  
Photothermal Property

AbstractMagnetic micro/nanorobots attracted much attention in biomedical fields because of their precise movement, manipulation, and targeting abilities. However, there is a lack of research on intelligent micro/nanorobots with stimuli-responsive drug delivery mechanisms for cancer therapy. To address this issue, we developed a type of strong covalently bound tri-bead drug delivery microrobots with NIR photothermal response azobenzene molecules attached to their carboxylic surface groups. The tri-bead microrobots are magnetic and showed good cytocompatibility even when their concentration is up to 200 µg/mL. In vitro photothermal experiments demonstrated fast NIR-responsive photothermal property; the microrobots were heated to 50 °C in 4 min, which triggered a significant increase in drug release. Motion control of the microrobots inside a microchannel demonstrated the feasibility of targeted therapy on tumor cells. Finally, experiments with lung cancer cells demonstrated the effectiveness of targeted chemo-photothermal therapy and were validated by cell viability assays. These results indicated that tri-bead microrobots have excellent potential for targeted chemo-photothermal therapy for lung cancer cell treatment.

An improved algorithm of temperature compensation for a near infrared multiple-acquisition system based on two-dimensional regression analysis

2015 ◽  
Vol 86 (8) ◽  
pp. 084902 ◽  
Author(s):  
Xu-yao Yu ◽  
Jia-bao An ◽  
Hui Yu ◽  
Yao Shi ◽  
Yong Deng ◽  
...  
Keyword(s):  
Regression Analysis ◽  
Temperature Compensation ◽  
Near Infrared ◽  
Acquisition System ◽  
Two Dimensional ◽  
Improved Algorithm

scholarly journals Two-dimensional mapping of falling water film thickness with near-infrared attenuation

2015 ◽  
Vol 56 (5) ◽  
Author(s):  
J. Dupont ◽  
G. Mignot ◽  
H.-M. Prasser
Keyword(s):  
Film Thickness ◽  
Near Infrared ◽  
Water Film ◽  
Two Dimensional ◽  
Water Film Thickness ◽  
Dimensional Mapping
Sign in / Sign up

Export Citation Format

Share Document