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Article ; Online: Photodynamic Inactivation of Staphylococcus aureus Using Aloe-emodin as Photosensitizer.

Wu, Jiali / Pang, Yaokun / Liu, Dan / Sun, Jianxia / Bai, Weibin

Food research international (Ottawa, Ont.)

2024 Volume 178, Page(s) 113959

Abstract: Aloe-emodin (AE) is a natural compound with photodynamic properties. The aim of this study was to investigate the inhibitory effect of AE-mediated photodynamic inactivation (PDI) on Staphylococcus aureus (S. aureus). The bacteriostatic efficiency under ... ...

Abstract	Aloe-emodin (AE) is a natural compound with photodynamic properties. The aim of this study was to investigate the inhibitory effect of AE-mediated photodynamic inactivation (PDI) on Staphylococcus aureus (S. aureus). The bacteriostatic efficiency under different photodynamic conditions and photosensitizing mechanism was studied in detail. The results showed that AE-mediated PDI exhibited a typical concentration and time-dependent characteristics. In terms of bactericidal mechanism, disruption of membrane integrity and increase of cell membrane permeability was observed. Type II reaction was assumed as the main photochemical reaction involved in AE-mediated PDI as evidenced by the action of different ROS quenching agents. Furthermore, AE-mediated PDI decreased the bacterial survival in freshly squeezed apple juice and maintained its quality. The combination of blue light and AE enlarged the application of AE as an effective natural photosensitizer suitable for a food system.
MeSH term(s)	Photosensitizing Agents/pharmacology ; Photosensitizing Agents/chemistry ; Photochemotherapy/methods ; Staphylococcus aureus ; Emodin/pharmacology ; Aloe ; Anthraquinones
Chemical Substances	Photosensitizing Agents ; Emodin (KA46RNI6HN) ; aloe emodin (C8IYT9CR7C) ; Anthraquinones
Language	English
Publishing date	2024-01-03
Publishing country	Canada
Document type	Journal Article
ZDB-ID	1111695-x
ISSN	1873-7145 ; 0963-9969
ISSN (online)	1873-7145
ISSN	0963-9969
DOI	10.1016/j.foodres.2024.113959
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Triboelectric nanogenerators as self-powered sensors for biometric authentication.

Shi, Xue / Han, Kai / Pang, Yaokun / Mai, Wenjie / Luo, Jianjun

Nanoscale

2023 Volume 15, Issue 22, Page(s) 9635–9651

Abstract: As a prerequisite for ensuring the safety and stability of people's daily lives, security monitoring has become increasingly important in the current rapid development of the economy. Intelligent sensing technology with lower power consumption will ... ...

Abstract	As a prerequisite for ensuring the safety and stability of people's daily lives, security monitoring has become increasingly important in the current rapid development of the economy. Intelligent sensing technology with lower power consumption will promote the upgradation of electronic devices and expand new application requirements. In this review, the recent progress in triboelectric nanogenerators (TENGs) as self-powered intelligent sensors for monitoring different kinds of biometric characteristics is summarized, including sliding behavior, handwriting behavior, keystroke dynamics, gait characteristics, and voice characteristics. Additionally, the applications of self-powered systems based on TENGs in individual electronics authentication and home security are comprehensively summarized. Finally, the remaining challenges and open opportunities are also discussed.
MeSH term(s)	Humans ; Biometric Identification ; Electronics
Language	English
Publishing date	2023-06-08
Publishing country	England
Document type	Journal Article ; Review
ZDB-ID	2515664-0
ISSN	2040-3372 ; 2040-3364
ISSN (online)	2040-3372
ISSN	2040-3364
DOI	10.1039/d3nr01334k
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Hybrid Energy-Harvesting Systems Based on Triboelectric Nanogenerators

Pang, Yaokun / Cao, Yunteng / Derakhshani, Masoud / Fang, Yuhui / Wang, Zhong Lin / Cao, Changyong

Matter. 2021 Jan. 6, v. 4, no. 1

2021

Abstract: Energy harvesting plays an important role in developing power-independent electronics such as wearables, implantable devices, monitoring networks, and robotics. The triboelectric nanogenerator (TENG), a novel promising energy-harvesting technology, has ... ...

Abstract	Energy harvesting plays an important role in developing power-independent electronics such as wearables, implantable devices, monitoring networks, and robotics. The triboelectric nanogenerator (TENG), a novel promising energy-harvesting technology, has attracted increasing attention across a broad range of applications from self-powered sensing to implantable medical devices to blue energy. However, a comprehensive review associated with the TENG-based hybrid energy system is lacking. Here, we systematically summarize the recent advances in the TENG-based hybrid energy-harvesting system with a focus on the concept designs and significant applications of the hybrid devices in various fields. The major hybridization designs through unique combinations of electromagnetic nanogenerators (NGs), piezoelectric NGs, solar cells, and thermo-/pyroelectric NGs with TENGs are discussed in detail for self-charging power units, self-powered biomedical systems, wearable electronics, environment-monitoring systems, and blue energy-harvesting facilities. We finally discuss the major challenges and perspectives for the future development of hybrid energy-harvesting systems.
Keywords	electric generators ; electronics ; energy ; hybridization
Language	English
Dates of publication	2021-01
Size	p. 116-143.
Publishing place	Elsevier BV
Document type	Article
ISSN	2590-2385
DOI	10.1016/j.matt.2020.10.018
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Triboelectric Effect-Driven Liquid Metal Actuators.

Bu, Tianzhao / Yang, Hang / Liu, Wenbo / Pang, Yaokun / Zhang, Chi / Wang, Zhong Lin

Soft robotics

2019 Volume 6, Issue 5, Page(s) 664–670

Abstract: Owing to the perfect combination of metallic conductivity, liquid fluidity, and mechanical stability, liquid metals (LMs) are considered the potential materials of the electromechanical system and the basic components of liquid robot. Here, triboelectric ...

Abstract	Owing to the perfect combination of metallic conductivity, liquid fluidity, and mechanical stability, liquid metals (LMs) are considered the potential materials of the electromechanical system and the basic components of liquid robot. Here, triboelectric effect-driven liquid metal actuators (TLMAs) have been demonstrated, in which the motions of LMs could be driven and accurately controlled by triboelectric nanogenerators (TENGs). By the coulomb forces of transferred triboelectric charges in interdigital electrodes and inertia effects, the LM could be driven for continuous linear and circular motions, respectively. As an alternative structure, the motion of LMs could also be accurately controlled, in which the reciprocating and merging of LMs have been demonstrated. Moreover, the TLMA could serve as a control switch to modulate on/off of an LED by integrating into a circuit, and a transport system based on TLMA has also been demonstrated. In this work, the TENG is used as a medium to first drive and accurately control LMs by external mechanical force, which may have great applications in Micro-Electro-Mechanical System (MEMS), liquid robot, and intelligent microcontroller.
Language	English
Publishing date	2019-06-20
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ISSN	2169-5180
ISSN (online)	2169-5180
DOI	10.1089/soro.2018.0161
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Intrinsically Stretchable Organic-Tribotronic-Transistor for Tactile Sensing.

Zhao, Junqing / Bu, Tianzhao / Zhang, Xiaohan / Pang, Yaokun / Li, Wenjian / Zhang, Zhi / Liu, Guoxu / Wang, Zhong Lin / Zhang, Chi

Research (Washington, D.C.)

2020 Volume 2020, Page(s) 1398903

Abstract: Stretchable electronics are of great significance for the development of the next-generation smart interactive systems. Here, we propose an intrinsically stretchable organic tribotronic transistor (SOTT) without a top gate electrode, which is composed of ...

Abstract	Stretchable electronics are of great significance for the development of the next-generation smart interactive systems. Here, we propose an intrinsically stretchable organic tribotronic transistor (SOTT) without a top gate electrode, which is composed of a stretchable substrate, silver nanowire electrodes, semiconductor blends, and a nonpolar elastomer dielectric. The drain-source current of the SOTT can be modulated by external contact electrification with the dielectric layer. Under 0-50% stretching both parallel and perpendicular to the channel directions, the SOTT retains great output performance. After being stretched to 50% for thousands of cycles, the SOTT can survive with excellent stability. Moreover, the SOTT can be conformably attached to the human hand, which can be used for tactile signal perception in human-machine interaction and for controlling smart home devices and robots. This work has realized a stretchable tribotronic transistor as the tactile sensor for smart interaction, which has extended the application of tribotronics in the human-machine interface, wearable electronics, and robotics.
Language	English
Publishing date	2020-06-24
Publishing country	United States
Document type	Journal Article
ISSN	2639-5274
ISSN (online)	2639-5274
DOI	10.34133/2020/1398903
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Article ; Online: Ti

Zhou, Yihao / Maleski, Kathleen / Anasori, Babak / Thostenson, James O / Pang, Yaokun / Feng, Yaying / Zeng, Kexin / Parker, Charles B / Zauscher, Stefan / Gogotsi, Yury / Glass, Jeffrey T / Cao, Changyong

ACS nano

2020 Volume 14, Issue 3, Page(s) 3576–3586

Abstract: The development of stretchable electronics requires the invention of compatible high-performance power sources, such as stretchable supercapacitors and batteries. In this work, two-dimensional (2D) titanium carbide ( ... ...

Abstract	The development of stretchable electronics requires the invention of compatible high-performance power sources, such as stretchable supercapacitors and batteries. In this work, two-dimensional (2D) titanium carbide (Ti
Language	English
Publishing date	2020-02-19
Publishing country	United States
Document type	Journal Article
ISSN	1936-086X
ISSN (online)	1936-086X
DOI	10.1021/acsnano.9b10066
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Intrinsically Stretchable Organic-Tribotronic-Transistor for Tactile Sensing

Junqing Zhao / Tianzhao Bu / Xiaohan Zhang / Yaokun Pang / Wenjian Li / Zhi Zhang / Guoxu Liu / Zhong Lin Wang / Chi Zhang

Research, Vol

2020 Volume 2020

Abstract	Stretchable electronics are of great significance for the development of the next-generation smart interactive systems. Here, we propose an intrinsically stretchable organic tribotronic transistor (SOTT) without a top gate electrode, which is composed of a stretchable substrate, silver nanowire electrodes, semiconductor blends, and a nonpolar elastomer dielectric. The drain-source current of the SOTT can be modulated by external contact electrification with the dielectric layer. Under 0-50% stretching both parallel and perpendicular to the channel directions, the SOTT retains great output performance. After being stretched to 50% for thousands of cycles, the SOTT can survive with excellent stability. Moreover, the SOTT can be conformably attached to the human hand, which can be used for tactile signal perception in human-machine interaction and for controlling smart home devices and robots. This work has realized a stretchable tribotronic transistor as the tactile sensor for smart interaction, which has extended the application of tribotronics in the human-machine interface, wearable electronics, and robotics.
Keywords	Science ; Q
Subject code	600
Language	English
Publishing date	2020-01-01T00:00:00Z
Publisher	American Association for the Advancement of Science
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Matryoshka-inspired hierarchically structured triboelectric nanogenerators for wave energy harvesting

Pang, Yaokun / Chen, Shoue / Chu, Yihang / Wang, Zhong Lin / Cao, Changyong

Nano Energy. 2019 Dec., v. 66

2019

Abstract: There is a tremendous interest to harvest ocean wave energy due to its promising advantages of high-power density, wide distribution, independence of time of day, weather or seasons, and sustainability. However, most of the current energy harvesters or ... ...

Abstract	There is a tremendous interest to harvest ocean wave energy due to its promising advantages of high-power density, wide distribution, independence of time of day, weather or seasons, and sustainability. However, most of the current energy harvesters or converters based on electromagnetic generators are suffering from unsatisfactory efficiency at low ocean wave triggering frequency and have the drawbacks of complex design, high cost and ease of corrosion in seawater. In this work, we report a matryoshka-inspired hierarchically structured triboelectric nanogenerator (HS-TENG) by nest-assembling multiple shells with decreasing sizes for effectively harvesting low-frequency wave energies with low-cost, high power density and high efficiency. As a proof-of-concept, we have fabricated a three-hierarchical-level HS-TENG by nesting three spherical acrylic shells filled with polytetrafluoroethylene (PTFE) balls into the gap spaces between the neighboring shells. The important factors that may affect the energy harvesting performance of the HS-TENG are studied, including the size and number of moving balls, the diameter of the holding shell, the amplitude and frequency of wave actuation, as well as the orientation angle between wave motion direction and electrode gap. It is demonstrated that the HS-TENG has superior output performance over the traditional single ball TENG (SB-TENG), with a maximum output peak power of 544 μW at a low frequency of 2 Hz, more than 6.5 times of that obtained by a SB-TENG with the same size, capable of driving different wearable electronics. Based on the optimized design, we further demonstrate that a HS-TENG network formed by a 3 × 3 device array can directly lighten dozens of light-emitting diodes and power an electronic thermometer for monitoring water condition, indicating its capability in effectively harvesting water wave energy for potential large-scale deployment in the ocean. This study provides an innovative hierarchical structure that can effectively improve the output performance of TENGs and paves the way for developing next-generation high-performance TENGs for blue energy harvesting.
Keywords	corrosion ; electric generators ; electrodes ; electronics ; energy ; polytetrafluoroethylene ; seawater ; thermometers ; water power ; weather
Language	English
Dates of publication	2019-12
Size	p. 104131-104139.
Publishing place	Elsevier BV
Document type	Article
ISSN	2211-2855
DOI	10.1016/j.nanoen.2019.104131
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Triboelectric micromotors actuated by ultralow frequency mechanical stimuli

Hang Yang / Yaokun Pang / Tianzhao Bu / Wenbo Liu / Jianjun Luo / Dongdong Jiang / Chi Zhang / Zhong Lin Wang

Nature Communications, Vol 10, Iss 1, Pp 1-

2019 Volume 7

Abstract: High-speed electrostatic micromotors with low energy consumption are attractive for small-scale electromechanical systems, but applications are limited by power supplies. Here the authors use a triboelectric nanogenerator for actuation of a high-speed ... ...

Abstract	High-speed electrostatic micromotors with low energy consumption are attractive for small-scale electromechanical systems, but applications are limited by power supplies. Here the authors use a triboelectric nanogenerator for actuation of a high-speed micromotor by low-frequency mechanical stimuli.
Keywords	Science ; Q
Language	English
Publishing date	2019-05-01T00:00:00Z
Publisher	Nature Publishing Group
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Triboelectric micromotors actuated by ultralow frequency mechanical stimuli

Hang Yang / Yaokun Pang / Tianzhao Bu / Wenbo Liu / Jianjun Luo / Dongdong Jiang / Chi Zhang / Zhong Lin Wang

Nature Communications, Vol 10, Iss 1, Pp 1-

2019 Volume 7

Abstract	High-speed electrostatic micromotors with low energy consumption are attractive for small-scale electromechanical systems, but applications are limited by power supplies. Here the authors use a triboelectric nanogenerator for actuation of a high-speed micromotor by low-frequency mechanical stimuli.
Keywords	Science ; Q
Language	English
Publishing date	2019-05-01T00:00:00Z
Publisher	Nature Portfolio
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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