We use several spectral vegetation indices obtained from UV-VIS-NIR spectroscopy to non-destructively evaluate chlorophyll, anthocyanin and flavonoid content in okra plants irradiated with 3 different artificial light...We use several spectral vegetation indices obtained from UV-VIS-NIR spectroscopy to non-destructively evaluate chlorophyll, anthocyanin and flavonoid content in okra plants irradiated with 3 different artificial light spectra in the blue, green and red regions of the electromagnetic spectrum;thus leading us to assess the effects of specific wavelength on the plants’ biochemical compounds and physiological state. The results show that blue light gives the highest anthocyanin and chlorophyll content, whereas the highest flavonoid content is found under red light. Therefore, these biochemical compounds with a well-known impact on human health, may be adjusted by selecting specific wavelengths to improve the quality of plants.展开更多
In recent years,solution-processible semiconductors with perovskite or perovskite-inspired structures have been extensively investigated for optoelectronic applications.In particular,silver-bismuth-halides have been i...In recent years,solution-processible semiconductors with perovskite or perovskite-inspired structures have been extensively investigated for optoelectronic applications.In particular,silver-bismuth-halides have been identified as especially promising because of their bulk properties and lack of heavily toxic elements.This study investigates the potential of Ag2BiI5 for near-infrared(NIR)-blind visible light photodetection,which is critical to emerging applications(e.g.,wearable optoelectronics and the Internet of Things).Self-powered photodetectors were realized and provided a near-constant≈100 mA W−1 responsivity through the visible,a NIR rejection ratio of>250,a long-wavelength responsivity onset matching standard colorimetric functions,and a linear photoresponse of>5 orders of magnitude.The optoelectronic characterization of Ag2BiI5 photodetectors additionally revealed consistency with one-center models and the role of the carrier collection distance in self-powered mode.This study provides a positive outlook of Ag2BiI5 toward emerging applications on low-cost and low-power NIR-blind visible light photodetector.展开更多
The post-Newtonian scheme in multiple systems with post-Newtonian parameters presented by Klioner and Soffel is extended to the post-post-Newtonian （PPN） order for light propagation problem in the solar system. Unde...The post-Newtonian scheme in multiple systems with post-Newtonian parameters presented by Klioner and Soffel is extended to the post-post-Newtonian （PPN） order for light propagation problem in the solar system. Under considering the solar system experiment requirement, a new parameter ε is introduced. This extension does not change the virtue of the scheme on the linear partial differential equations of the potential and vector potential mentioned in previous work. Furthermore, this extension is based on the former work done by Richter and Matzner in one global system theory. As an application, we also consider the deflection of light ray in the global coordinates. And the deflection angle of light ray is obtained with post-Newtonian parameters.展开更多
Bionic micro/nanomotor systems,which combine biomimetic design with the motion performance,have shown great potential in many fields.However,so far,it remains a challenge to design and fabricate biomimetic micro/nanom...Bionic micro/nanomotor systems,which combine biomimetic design with the motion performance,have shown great potential in many fields.However,so far,it remains a challenge to design and fabricate biomimetic micro/nanomotors with high flexibility to perform complex tasks in complicated and changeable environments.In this work,inspired by the suckerfishes(vip)-shark(host)motion behavior,we designed and prepared a kind of intelligent two-stage micro@nanomotor with weak acid-triggered release of nanomotor.When the suckerfishes,who clinged to the surface of large fish or the bottom of boat and marched with them,reached bait-rich waters,they detached from the host to engage in foraging behavior.Inspired by the suckerfishes-shark system and the coordinated bond interaction,a large amount of Janus Au-Pt nanomotors with hydrogen peroxide(H_(2)O_(2))-driven capacity,analogous to suckerfishes,were attached onto immovable yolk-shell structured polydopamine-mesoporous silica(PDA-MS)micromotor as the host to create two-stage PDA-MS@Au-Pt micro@nanomotor.PDA-MS@Au-Pt micro@nanomotor moved directionally by self-thermophoresis under the propulsion of near infrared ray(NIR)light with low power density.When the PDA-MS@Au-Pt entered into the weak acidic environment formed by a low concentration of H_(2)O_(2),most small Au-Pt nanomotors were detached from the surface of PDA-MS due to the weak acidic sensitivity of the coordinated bond,and then performed self-diffusiophoresis in the environment containing a low concentration of H_(2)O_(2) as a chemical fuel.This bionic intelligent system,which consists of a large-sized micromotor and lots of small-sized nanomotors,should provide a new insight for active two-stage cargo delivery.展开更多
Disulfidptosis,a novel mechanism of programmed cell death through the disruption of tumor metabolic symbiosis(TMS),has showed tremendous potential in cancer therapy.However,the efficacy of disulfidptosis is limited by...Disulfidptosis,a novel mechanism of programmed cell death through the disruption of tumor metabolic symbiosis(TMS),has showed tremendous potential in cancer therapy.However,the efficacy of disulfidptosis is limited by poor permeability of drugs in solid tumors.Herein,hydrogen sulfide(H_(2)S)and nearinfrared(NIR)light-driven nanomotors(denoted as HGPP)have been constructed to efficiently penetrate tumors and induce disulfidptosis.HGPP demonstrate glutathione(GSH)-responsive release of H_(2)S,which combined with NIR light-induced photothermal effect drive HGPP movement to facilitate deep tumor penetration.The released H_(2)S induces tumor acidosis and disrupts TMS,where disulfide accumulation following cell starvation leads to disulfidptosis.In addition,HGPP induce hepatoma specific cellular uptake and catalyze the conversion of glucose and oxygen to produce hydrogen peroxide(H_(2)O_(2)),leading to glucose starvation.Overall,this study has developed a multifunctional Janus nanomotor that provides a novel strategy for disulfidptosis-based solid tumor therapy.展开更多
Infrared light represents a broad spectrum of light with wavelengths from 700 nm to 1 million nm（1,000 microns）.At its shortest wavelengths（referred to as near-infrared）,it merges with the red spectrum of visible ...Infrared light represents a broad spectrum of light with wavelengths from 700 nm to 1 million nm（1,000 microns）.At its shortest wavelengths（referred to as near-infrared）,it merges with the red spectrum of visible light.At the longest end（referred to as far-infrared）,it blends into the range of microwaves.展开更多
The optical transmission（200--2000 nm）, sheet resistance and work functions of indium-tin oxide（ITO）（100 Ω/）, ITO（12 Ω/）, zinc-oxide（ZnO）, aluminum-doped ZnO（AZO） and polyaniline（PANI） films were inves...The optical transmission（200--2000 nm）, sheet resistance and work functions of indium-tin oxide（ITO）（100 Ω/）, ITO（12 Ω/）, zinc-oxide（ZnO）, aluminum-doped ZnO（AZO） and polyaniline（PANI） films were investigated. Near-infrared organic light-emitting diodes（NIR-OLEDs） emitting around 1.54 μm based on Er（DBM）3Phen with ITO（100 Ω/）, ITO（12 Ω/） and PANI as anodes, respectively, were fabricated. The device structure was anode/4＂-tris（N-3-methylphenyl-N-phenyl-amino）-triphenylamine（m-MTDATA）/ N,N＇-di-l-naphthyl- N,N＇-diphenylbenzidine（NPB）/Er（DBM）3Phen/tris-（8-hydroxyquinoline） aluminum（Alq3）/A1. The results suggest that the performance of NIR-OLEDs with ITO（100 Ω/）, which has a lower Sn content, as anodes appear to be better than that of NIR-OLEDs with ITO（12 Ω/） and PANI as anodes, respectively. The high N1R transmittance of ITO（100 Ω/） is a major reason for the relatively high NIR EL efficiency. The more balanced holes and electrons in the device based on ITO（100 Ω/） are another reasons.展开更多
The path of a light’s signal is one and the same in the universal space regardless of the inertial frame by which it is identified. However, only one frame can be taken stationary and identified with the universal sp...The path of a light’s signal is one and the same in the universal space regardless of the inertial frame by which it is identified. However, only one frame can be taken stationary and identified with the universal space while all other frames are moving. The direction of the path of a light’s pulse in a moving frame is determined in terms of its direction in the stationary one;the result is utilized to explain stellar aberration and show that the tilted direction in the moving frame depends only on its velocity. The aberration increment vector is introduced and employed to determine the apparent position of a star at each point of the earth orbit. Aberration in an earth satellite relative to the geocentric frame is presented. The direction’s change of a light beam between graded inertial frames promotes explaining aberration in an earth’s satellite in parallel to stellar aberration on earth.展开更多
文摘We use several spectral vegetation indices obtained from UV-VIS-NIR spectroscopy to non-destructively evaluate chlorophyll, anthocyanin and flavonoid content in okra plants irradiated with 3 different artificial light spectra in the blue, green and red regions of the electromagnetic spectrum;thus leading us to assess the effects of specific wavelength on the plants’ biochemical compounds and physiological state. The results show that blue light gives the highest anthocyanin and chlorophyll content, whereas the highest flavonoid content is found under red light. Therefore, these biochemical compounds with a well-known impact on human health, may be adjusted by selecting specific wavelengths to improve the quality of plants.
基金financial support from the National Natural Science Foundation of China (61750110517 and 61805166)the Jiangsu Province Natural Science Foundation (BK20170345)+3 种基金supported by the Collaborative Innovation Center of Suzhou Nano Science & Technologythe Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)the 111 Projectthe Joint International Research Laboratory of Carbon-Based Functional Materials and Devices
文摘In recent years,solution-processible semiconductors with perovskite or perovskite-inspired structures have been extensively investigated for optoelectronic applications.In particular,silver-bismuth-halides have been identified as especially promising because of their bulk properties and lack of heavily toxic elements.This study investigates the potential of Ag2BiI5 for near-infrared(NIR)-blind visible light photodetection,which is critical to emerging applications(e.g.,wearable optoelectronics and the Internet of Things).Self-powered photodetectors were realized and provided a near-constant≈100 mA W−1 responsivity through the visible,a NIR rejection ratio of>250,a long-wavelength responsivity onset matching standard colorimetric functions,and a linear photoresponse of>5 orders of magnitude.The optoelectronic characterization of Ag2BiI5 photodetectors additionally revealed consistency with one-center models and the role of the carrier collection distance in self-powered mode.This study provides a positive outlook of Ag2BiI5 toward emerging applications on low-cost and low-power NIR-blind visible light photodetector.
基金supported by the National Natural Science Foundation of China (Grant No. 10674099)the National Science Foundation for Young Scientists of China (Grant No. 10925313)the Shandong Provincial Natural Science Foundation,China (GrantNo. ZR2010AQ023)
文摘The post-Newtonian scheme in multiple systems with post-Newtonian parameters presented by Klioner and Soffel is extended to the post-post-Newtonian （PPN） order for light propagation problem in the solar system. Under considering the solar system experiment requirement, a new parameter ε is introduced. This extension does not change the virtue of the scheme on the linear partial differential equations of the potential and vector potential mentioned in previous work. Furthermore, this extension is based on the former work done by Richter and Matzner in one global system theory. As an application, we also consider the deflection of light ray in the global coordinates. And the deflection angle of light ray is obtained with post-Newtonian parameters.
基金supported by Fundamental Research Funds for the Central Universities(No.FRF-BR-23-02B)China Postdoctoral Science Foundation(No.2023M731408)+2 种基金Jiangsu Funding Program for Excellent Postdoctoral Talent(No.2023ZB640)Jiangsu Province Capability Improvement Project through Science,technology and Education(Jiangsu Provincial Medical Key Discipline,ZDXK202222)Natural Science Foundation of Jiangsu Province(No.BK20230731).
文摘Bionic micro/nanomotor systems,which combine biomimetic design with the motion performance,have shown great potential in many fields.However,so far,it remains a challenge to design and fabricate biomimetic micro/nanomotors with high flexibility to perform complex tasks in complicated and changeable environments.In this work,inspired by the suckerfishes(vip)-shark(host)motion behavior,we designed and prepared a kind of intelligent two-stage micro@nanomotor with weak acid-triggered release of nanomotor.When the suckerfishes,who clinged to the surface of large fish or the bottom of boat and marched with them,reached bait-rich waters,they detached from the host to engage in foraging behavior.Inspired by the suckerfishes-shark system and the coordinated bond interaction,a large amount of Janus Au-Pt nanomotors with hydrogen peroxide(H_(2)O_(2))-driven capacity,analogous to suckerfishes,were attached onto immovable yolk-shell structured polydopamine-mesoporous silica(PDA-MS)micromotor as the host to create two-stage PDA-MS@Au-Pt micro@nanomotor.PDA-MS@Au-Pt micro@nanomotor moved directionally by self-thermophoresis under the propulsion of near infrared ray(NIR)light with low power density.When the PDA-MS@Au-Pt entered into the weak acidic environment formed by a low concentration of H_(2)O_(2),most small Au-Pt nanomotors were detached from the surface of PDA-MS due to the weak acidic sensitivity of the coordinated bond,and then performed self-diffusiophoresis in the environment containing a low concentration of H_(2)O_(2) as a chemical fuel.This bionic intelligent system,which consists of a large-sized micromotor and lots of small-sized nanomotors,should provide a new insight for active two-stage cargo delivery.
基金supported by the National Natural Science Foundation of China(No.22171230)the Project of Science and Technology of Social Development in Shaanxi Province(Nos.2024SF-YBXM-294,2023-YBSF-151)。
文摘Disulfidptosis,a novel mechanism of programmed cell death through the disruption of tumor metabolic symbiosis(TMS),has showed tremendous potential in cancer therapy.However,the efficacy of disulfidptosis is limited by poor permeability of drugs in solid tumors.Herein,hydrogen sulfide(H_(2)S)and nearinfrared(NIR)light-driven nanomotors(denoted as HGPP)have been constructed to efficiently penetrate tumors and induce disulfidptosis.HGPP demonstrate glutathione(GSH)-responsive release of H_(2)S,which combined with NIR light-induced photothermal effect drive HGPP movement to facilitate deep tumor penetration.The released H_(2)S induces tumor acidosis and disrupts TMS,where disulfide accumulation following cell starvation leads to disulfidptosis.In addition,HGPP induce hepatoma specific cellular uptake and catalyze the conversion of glucose and oxygen to produce hydrogen peroxide(H_(2)O_(2)),leading to glucose starvation.Overall,this study has developed a multifunctional Janus nanomotor that provides a novel strategy for disulfidptosis-based solid tumor therapy.
文摘Infrared light represents a broad spectrum of light with wavelengths from 700 nm to 1 million nm（1,000 microns）.At its shortest wavelengths（referred to as near-infrared）,it merges with the red spectrum of visible light.At the longest end（referred to as far-infrared）,it blends into the range of microwaves.
基金Supported by the National Natural Science Foundation of China(No.60807009)Specialized Research Fund for the Doctoral Program of Higher Education of China(No.200801411038)Young Teacher Foundation of Dalian University of Technology,China(No.3005-893212)
文摘The optical transmission（200--2000 nm）, sheet resistance and work functions of indium-tin oxide（ITO）（100 Ω/）, ITO（12 Ω/）, zinc-oxide（ZnO）, aluminum-doped ZnO（AZO） and polyaniline（PANI） films were investigated. Near-infrared organic light-emitting diodes（NIR-OLEDs） emitting around 1.54 μm based on Er（DBM）3Phen with ITO（100 Ω/）, ITO（12 Ω/） and PANI as anodes, respectively, were fabricated. The device structure was anode/4＂-tris（N-3-methylphenyl-N-phenyl-amino）-triphenylamine（m-MTDATA）/ N,N＇-di-l-naphthyl- N,N＇-diphenylbenzidine（NPB）/Er（DBM）3Phen/tris-（8-hydroxyquinoline） aluminum（Alq3）/A1. The results suggest that the performance of NIR-OLEDs with ITO（100 Ω/）, which has a lower Sn content, as anodes appear to be better than that of NIR-OLEDs with ITO（12 Ω/） and PANI as anodes, respectively. The high N1R transmittance of ITO（100 Ω/） is a major reason for the relatively high NIR EL efficiency. The more balanced holes and electrons in the device based on ITO（100 Ω/） are another reasons.
文摘The path of a light’s signal is one and the same in the universal space regardless of the inertial frame by which it is identified. However, only one frame can be taken stationary and identified with the universal space while all other frames are moving. The direction of the path of a light’s pulse in a moving frame is determined in terms of its direction in the stationary one;the result is utilized to explain stellar aberration and show that the tilted direction in the moving frame depends only on its velocity. The aberration increment vector is introduced and employed to determine the apparent position of a star at each point of the earth orbit. Aberration in an earth satellite relative to the geocentric frame is presented. The direction’s change of a light beam between graded inertial frames promotes explaining aberration in an earth’s satellite in parallel to stellar aberration on earth.
