This paper reported the synthesis of hexaar- ylbiimidazole-tetraphenylethene （HABI-TPE） conjugated photochromic fluorophore, which simultaneously exhib- ited photochromic property, condensed state enhanced emission ...This paper reported the synthesis of hexaar- ylbiimidazole-tetraphenylethene （HABI-TPE） conjugated photochromic fluorophore, which simultaneously exhib- ited photochromic property, condensed state enhanced emission and reversible fluorescence switching. Upon UV irradiation, a green species with a broad absorption band between 550 and 800 nm（ the absorption maximum at 697 nm ） was observed, which readily faded to colorless in the darkness. HABI-TPE launched strong fluorescence with the maximum emission wavelength at 520 580 nm under the excitation with 450-500 nm visible light in condensed state, which is in contrast to nonfluorescence in solution. The maximum emission wavelength in condensed state was dependent of excitation wavelength. More interest- ingly, HABI-TPE exhibited reversible fluorescence switch- ing upon alternating irradiation with blue or near-UV light （wavelength less than 490 nm） and green light （more than 490 nm） in condensed state. Our evaluation demonstrated that HABI-TPE exhibited great photoswitchable fluores- cence, which is a promising photoswitchable fluorophore for localization-based super-resolution microscopy, evi- dencing by resolving nanostructures with sub-100nm resolution in polymethylmethacrylate films.展开更多
In order to improve the service life of solar street lamp, it is necessary to manage the lamp＇s battery in the form of on-line detection via wireless communanication. A wireless managonent systean for solar street la...In order to improve the service life of solar street lamp, it is necessary to manage the lamp＇s battery in the form of on-line detection via wireless communanication. A wireless managonent systean for solar street lamp based on nanoLOC AVR nttlule is researched in this paper, the system can real-timely detect the solar street lamp＇s battery voltage, corrent, tonperature, internal resistance, residual capacity and so on. And the collected data is transmitted to computer＇ s management via wireless connnunication to achieve recording, storage, analysis and processing for various parameters.展开更多
In this paper, we propose a hardware design for an effective real time indoor localization system for staff working in high-risk manufacturing areas. Because of the special requirements of our system, the chirp spread...In this paper, we propose a hardware design for an effective real time indoor localization system for staff working in high-risk manufacturing areas. Because of the special requirements of our system, the chirp spread spectrum （CSS） is the most suitable indoor localization technology. The details of the new localization system are described. The system involves several anchors, tags, and a gateway, all of which use the nanoLOC TRX transceiver （NASTR1） RF chip （Nanotron Co., Germany）, which is based on the CSS technology. To validate the effectiveness of our system, both ranging and localization tests were carried out. The difference between the ranging accuracy indoors and outdoors was small. The localization system can position indoor mobile staffprecisely, enabling the establishment of an emergency rescue mechanism.展开更多
文摘This paper reported the synthesis of hexaar- ylbiimidazole-tetraphenylethene （HABI-TPE） conjugated photochromic fluorophore, which simultaneously exhib- ited photochromic property, condensed state enhanced emission and reversible fluorescence switching. Upon UV irradiation, a green species with a broad absorption band between 550 and 800 nm（ the absorption maximum at 697 nm ） was observed, which readily faded to colorless in the darkness. HABI-TPE launched strong fluorescence with the maximum emission wavelength at 520 580 nm under the excitation with 450-500 nm visible light in condensed state, which is in contrast to nonfluorescence in solution. The maximum emission wavelength in condensed state was dependent of excitation wavelength. More interest- ingly, HABI-TPE exhibited reversible fluorescence switch- ing upon alternating irradiation with blue or near-UV light （wavelength less than 490 nm） and green light （more than 490 nm） in condensed state. Our evaluation demonstrated that HABI-TPE exhibited great photoswitchable fluores- cence, which is a promising photoswitchable fluorophore for localization-based super-resolution microscopy, evi- dencing by resolving nanostructures with sub-100nm resolution in polymethylmethacrylate films.
文摘In order to improve the service life of solar street lamp, it is necessary to manage the lamp＇s battery in the form of on-line detection via wireless communanication. A wireless managonent systean for solar street lamp based on nanoLOC AVR nttlule is researched in this paper, the system can real-timely detect the solar street lamp＇s battery voltage, corrent, tonperature, internal resistance, residual capacity and so on. And the collected data is transmitted to computer＇ s management via wireless connnunication to achieve recording, storage, analysis and processing for various parameters.
基金Project (No. KYH063112027) supported by the Department of Science and Technology of Zhejiang Province,China
文摘In this paper, we propose a hardware design for an effective real time indoor localization system for staff working in high-risk manufacturing areas. Because of the special requirements of our system, the chirp spread spectrum （CSS） is the most suitable indoor localization technology. The details of the new localization system are described. The system involves several anchors, tags, and a gateway, all of which use the nanoLOC TRX transceiver （NASTR1） RF chip （Nanotron Co., Germany）, which is based on the CSS technology. To validate the effectiveness of our system, both ranging and localization tests were carried out. The difference between the ranging accuracy indoors and outdoors was small. The localization system can position indoor mobile staffprecisely, enabling the establishment of an emergency rescue mechanism.
