Results 31 to 40 of about 212,527 (305)

Bidirectional electron conic observations for photoelectrons in the Martian ionosphere

Earth and Planetary Physics, 2020
Electron pitch angle distributions similar to bidirectional electron conics (BECs) have been reported at Mars in previous studies based on analyses of Mars Global Surveyor measurements.
YuTian Cao, Jun Cui, BinBin Ni, XiaoShu Wu, Qiong Luo, ZhaoGuo He   +5 more
doaj   +1 more source

Temporal and spectral variations of the photoelectron flux and solar irradiance during an X class solar flare

Geophysical Research Letters, 2008
Photoelectrons are the main energy source of airglow used to diagnose the state of the ionosphere‐thermosphere system. Because of measurement uncertainties and substantial gaps in the historical record, parameterized models of the EUV irradiance and ...
W. K. Peterson, P. C. Chamberlin, T. N. Woods, P. G. Richards   +3 more
doaj   +1 more source

Targeting and Photodynamic Killing of Cancer Cell by Nitrogen-Doped Titanium Dioxide Coupled with Folic Acid

Nanomaterials, 2016
Titanium dioxide (TiO2) has attracted wide attention as a potential photosensitizer (PS) in photodynamic therapy (PDT). However, bare TiO2 can only be excited by ultraviolet illumination, and it lacks specific targeting ligands, which largely impede its ...
Jin Xie, Xiaobo Pan, Mengyan Wang, Longfang Yao, Xinyue Liang, Jiong Ma, Yiyan Fei, Pei-Nan Wang, Lan Mi   +8 more
doaj   +1 more source

Manipulation of Si Doping Concentration for Modification of the Electric Field and Carrier Injection for AlGaN-Based Deep-Ultraviolet Light-Emitting Diodes

Crystals, 2018
Electron overflow is one of the key factors that limit the quantum efficiency for AlGaN-based deep-ultraviolet light-emitting diodes. In this work, we report a numerical study to improve the electron injection efficiency by manipulating the electric ...
Mengqian Fang, Kangkai Tian, Chunshuang Chu, Yonghui Zhang, Zi-Hui Zhang, Wengang Bi   +5 more
doaj   +1 more source

Application of SNAP-Tag in Expansion Super-Resolution Microscopy Using DNA Oligostrands

Frontiers in Chemistry, 2021
Expansion super-resolution technology is a new technology developed in recent years. It anchors the dye on the hydrogel and the dye expands with the expansion of the hydrogel so that a super-resolution map can be obtained under an ordinary microscope ...
Longfang Yao, Li Zhang, Yiyan Fei, Liwen Chen, Lan Mi, Jiong Ma, Jiong Ma, Jiong Ma   +7 more
doaj   +1 more source

Study of the Photodynamic Activity of N-Doped TiO2 Nanoparticles Conjugated with Aluminum Phthalocyanine

Nanomaterials, 2017
TiO2 nanoparticles modified with phthalocyanines (Pc) have been proven to be a potential photosensitizer in the application of photodynamic therapy (PDT). However, the generation of reactive oxygen species (ROS) by TiO2 nanoparticles modified with Pc has
Xiaobo Pan, Xinyue Liang, Longfang Yao, Xinyi Wang, Yueyue Jing, Jiong Ma, Yiyan Fei, Li Chen, Lan Mi   +8 more
doaj   +1 more source

Applications of Super Resolution Expansion Microscopy in Yeast

Frontiers in Physics, 2021
Super-resolution microscopy includes multiple techniques in optical microscopy that enable sub-diffraction resolution fluorescence imaging of cellular structures.
Liwen Chen, Longfang Yao, Li Zhang, Yiyan Fei, Lan Mi, Jiong Ma, Jiong Ma, Jiong Ma   +7 more
doaj   +1 more source

On the Impact of Electron Leakage on the Efficiency Droop for AlGaN Based Deep Ultraviolet Light Emitting Diodes

IEEE Photonics Journal, 2020
In this work, we have investigated the origin of efficiency droop for AlGaN-based deep ultraviolet light-emitting diodes (DUV LEDs). We find that the efficiency droop is likely to be caused by the electron leakage for DUV LEDs studied in this work.
Chunshuang Chu, Kangkai Tian, Jiamang Che, Hua Shao, Jianquan Kou, Yonghui Zhang, Zi-Hui Zhang, Hao-Chung Kuo   +7 more
doaj   +1 more source

The Role of Ultra‐Thin Passive Films and Organic Adsorbates on Aluminum Chips for a Friction‐Induced Solid‐State Recycling Process

Advanced Engineering Materials, EarlyView.
Despite benefits to storage stability and handleability of aluminum scrap, octadecyl phosphonic acid (ODPA) SAMs reduce the tensile strength of wires produced using friction‐induced recycling. Etching and methyl diphosphonic acid (MDPA) coatings, however, have little effect.
Timothy D. Goller, Steffen Gabsa, Werner Homberg, Guido Grundmeier   +3 more
wiley   +1 more source

Carbon Dots for Intracellular pH Sensing with Fluorescence Lifetime Imaging Microscopy

Nanomaterials, 2020
The monitoring of intracellular pH is of great importance for understanding intracellular trafficking and functions. It has various limitations for biosensing based on the fluorescence intensity or spectra study.
Maojia Huang, Xinyue Liang, Zixiao Zhang, Jing Wang, Yiyan Fei, Jiong Ma, Songnan Qu, Lan Mi   +7 more
doaj   +1 more source