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CAS IR Grid
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宁波材料技术与工程研... [5]
长春光学精密机械与物... [1]
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期刊论文 [8]
会议论文 [1]
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Photo-Stimulated Polychromatic Room Temperature Phosphorescence of Carbon Dots
期刊论文
OAI收割
SMALL, 2020, 卷号: 16, 期号: 31
作者:
Jiang, Kai
;
Hu, Sizhe
;
Wang, Yuci
;
Li, Zhongjun
;
Lin, Hengwei
  |  
收藏
  |  
浏览/下载:87/0
  |  
提交时间:2020/12/16
GRAPHENE QUANTUM DOTS
ORGANIC PHOSPHORESCENCE
MOLECULAR DESIGN
LONG-WAVELENGTH
SCALE SYNTHESIS
MODE EMISSION
POLYMER DOTS
MULTICOLOR
FLUORESCENCE
MECHANISM
Afterglow of carbon dots: mechanism, strategy and applications
期刊论文
OAI收割
MATERIALS CHEMISTRY FRONTIERS, 2020, 卷号: 4, 期号: 2, 页码: 386-399
作者:
Jiang, Kai
;
Wang, Yuhui
;
Li, Zhongjun
;
Lin, Hengwei
  |  
收藏
  |  
浏览/下载:91/0
  |  
提交时间:2020/12/16
ROOM-TEMPERATURE PHOSPHORESCENCE
GRAPHENE QUANTUM DOTS
ACTIVATED DELAYED FLUORESCENCE
EXCITATION-INDEPENDENT EMISSION
LIGHT-EMITTING-DIODES
PHOTOLUMINESCENCE MECHANISM
MOLECULAR DESIGN
ORGANIC MATERIALS
FACILE SYNTHESIS
LONG-WAVELENGTH
Visible-Light-Excited Room Temperature Phosphorescent Carbon Dots
期刊论文
OAI收割
NANOMATERIALS, 2020, 卷号: 10, 期号: 3
作者:
Hu, Sizhe
;
Jiang, Kai
;
Wang, Yuci
;
Wang, Sui
;
Li, Zhongjun
  |  
收藏
  |  
浏览/下载:37/0
  |  
提交时间:2020/12/16
GRAPHENE QUANTUM DOTS
FULL-COLOR EMISSION
LONG-WAVELENGTH
MODE EMISSION
MULTICOLOR
DESIGN
PERSISTENT
MECHANISM
FACILE
No pulsed radio emission during a bursting phase of a Galactic magnetar
期刊论文
OAI收割
Nature, 2020, 卷号: 587, 页码: 63-65
作者:
HXMT
  |  
收藏
  |  
浏览/下载:44/0
  |  
提交时间:2022/02/08
Astrophysics - High Energy Astrophysical Phenomena
Abstract: Fast radio bursts (FRBs) are millisecond-duration radio transients of unknown physical origin observed at extragalactic distances
1-3
. It has long been speculated that magnetars are the engine powering repeating bursts from FRB sources
4-13
, but no convincing evidence has been collected so far
14
. Recently, the Galactic magnetar SRG 1935+2154 entered an active phase by emitting intense soft íray bursts
15
. One FRB-like event with two peaks (FRB 200428) and a luminosity slightly lower than the faintest extragalactic FRBs was detected from the source, in association with a soft íray/hard-X-ray flare
18-21
. Here we report an eight-hour targeted radio observational campaign comprising four sessions and assisted by multi-wavelength (optical and hard-X-ray) data. During the third session, 29 soft-íray repeater (SGR) bursts were detected in íray energies. Throughout the observing period, we detected no single dispersed pulsed emission coincident with the arrivals of SGR bursts, but unfortunately we were not observing when the FRB was detected. The non-detection places a fluence upper limit that is eight orders of magnitude lower than the fluence of FRB 200428. Our results suggest that FRB-SGR burst associations are rare. FRBs may be highly relativistic and geometrically beamed, or FRB-like events associated with SGR bursts may have narrow spectra and characteristic frequencies outside the observed band. It is also possible that the physical conditions required to achieve coherent radiation in SGR bursts are difficult to satisfy, and that only under extreme conditions could an FRB be associated with an SGR burst.
Preparation of Multicolor Photoluminescent Carbon Dots by Tuning Surface States
期刊论文
OAI收割
NANOMATERIALS, 2019, 卷号: 9, 期号: 4
作者:
Jiang, Kai
;
Feng, Xiangyu
;
Gao, Xiaolu
;
Wang, Yuhui
;
Cai, Congzhong
  |  
收藏
  |  
浏览/下载:118/0
  |  
提交时间:2019/12/18
GRAPHENE QUANTUM DOTS
FULL-COLOR EMISSION
LONG-WAVELENGTH
FLUORESCENCE
CHALLENGES
RED
LUMINESCENCE
MECHANISM
NANODOTS
GREEN
Selective biocompatibility and responsive imaging property of cationic conjugated polyelectrolyte to cancer cells
期刊论文
OAI收割
CHINESE CHEMICAL LETTERS, 2017, 卷号: 28, 期号: 10, 页码: 1975-1978
作者:
Wang, Bing
;
Nie, Chenyao
;
Liu, Libing
;
Lv, Fengting
;
Wang, Shu
  |  
收藏
  |  
浏览/下载:28/0
  |  
提交时间:2019/04/09
Imaging Cell
Conjugated Polymers
Fluorescence Enhancement
Long-wavelength Emission
Selective Biocompatibility
MBE InAs quantum dots grown on metamorphic InGaAs for long wavelength emitting
期刊论文
OAI收割
physica e-low-dimensional systems & nanostructures, 2006, 卷号: 35, 期号: 1, 页码: 194-198
Jiao YH (Jiao Y. H.)
;
Wu J (Wu J.)
;
Xu B (Xu B.)
;
Jin P (Jin P.)
;
Hu LJ (Hu L. J.)
;
Liang LY (Liang L. Y.)
;
Wang ZG (Wang Z. G.)
收藏
  |  
浏览/下载:40/0
  |  
提交时间:2010/04/11
metamorphic
long wavelength
quantum dots
molecular beam epitaxy
MOLECULAR-BEAM EPITAXY
CHEMICAL-VAPOR-DEPOSITION
1.3 MU-M
GAAS
EMISSION
RANGE
ISLANDS
ARRAYS
LASERS
Spontaneous emission and gain characteristics of InGaAs/InGaAsP quantum well laser (EI CONFERENCE)
会议论文
OAI收割
Optoelectronic Devices and Integration, November 8, 2004 - November 11, 2004, Beijing, China
作者:
Wang L.
;
Wang L.
;
Wang L.
收藏
  |  
浏览/下载:16/0
  |  
提交时间:2013/03/25
Long wavelength InGaAs/InGaAsP multiple quantum well laser is grown by MOCVD. The characteristics of spontaneous emission
amplified spontaneous emission and modal gain of the MQW is investigated by using single-pass multi-section technique. The amplified spontaneous emission is around a wavelength of 1500nm
dependent on the temperature and the current density. The modal gain spectra show a red shift with increasing temperature. The peak modal gain exhibits a decrease with increasing temperature from 140K to 300K. The loss measurements shows that the main loss mechanism in the structure might be the free carrier absorption in the doped cladding layers and a internal modal loss of about 10cm-1.
Carbon Dots with Dual-Emissive, Robust, and Aggregation-Induced Room-Temperature Phosphorescence Characteristics
期刊论文
OAI收割
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
作者:
Jiang, Kai
;
Gao, Xiaolu
;
Feng, Xiangyu
;
Wang, Yuhui
;
Li, Zhongjun
  |  
收藏
  |  
浏览/下载:20/0
  |  
提交时间:2019/12/18
WHITE-LIGHT EMISSION
QUANTUM DOTS
LONG-WAVELENGTH
SCALE SYNTHESIS
MULTICOLOR
PHOTOLUMINESCENCE
FACILE
DESIGN
STATES
GUEST