Highly stretchable and robust strain sensors are rapidly emerging as promising candidates for a diverse of wearable electronics.The main challenge for the practical application of wearable electronics is the energy co...Highly stretchable and robust strain sensors are rapidly emerging as promising candidates for a diverse of wearable electronics.The main challenge for the practical application of wearable electronics is the energy consumption and device aging.Energy consumption mainly depends on the conductivity of the sensor,and it is a key factor in determining device aging.Here,we design a liq-uid metal(LM)-embedded hydrogel as a sensing material to overcome the bar-rier of energy consumption and device aging of wearable electronics.The sensing material simultaneously exhibits high conductivity(up to 22 S m�1),low elastic modulus(23 kPa),and ultrahigh stretchability(1500%)with excel-lent robustness(consistent performance against 12000 mechanical cycling).A motion monitoring system is composed of intrinsically soft LM-embedded hydrogel as sensing material,a microcontroller,signal-processing circuits,Bluetooth transceiver,and self-organizing map developed software for the visu-alization of multi-dimensional data.This system integrating multiple functions including signal conditioning,processing,and wireless transmission achieves monitor hand gesture as well as sign-to-verbal translation.This approach provides an ideal strategy for deaf-mute communicating with normal people and broadens the application of wearable electronics.展开更多
In this study,the finite-time formation control of multi-agent systems with region constraints is studied.Multiple agents have first-order dynamics and a common target area.A novel control algorithm is proposed using ...In this study,the finite-time formation control of multi-agent systems with region constraints is studied.Multiple agents have first-order dynamics and a common target area.A novel control algorithm is proposed using local information and interaction.If the communication graph is undirected and connected and the desired framework is rigid,it is proved that the controller can be used to solve the formation problem with a target area.That is,all agents can enter the desired region in finite time while reaching and maintaining the desired formation shapes.Finally,a numerical example is given to illustrate the results.展开更多
基金National Natural Science Foundation of China,Grant/Award Numbers:22176221,51763010,51963011Central Public-interest Scientific Institution Basal Research Fund(CAFS),Grant/Award Number:2020TD75+2 种基金Jiangxi Provincial Double Thousand Talents Plan-Youth Program,Grant/Award Number:JXSQ2019201108Jiangxi Key Laboratory of Flexible Electronics,Grant/Award Number:20212BCD42004National。
文摘Highly stretchable and robust strain sensors are rapidly emerging as promising candidates for a diverse of wearable electronics.The main challenge for the practical application of wearable electronics is the energy consumption and device aging.Energy consumption mainly depends on the conductivity of the sensor,and it is a key factor in determining device aging.Here,we design a liq-uid metal(LM)-embedded hydrogel as a sensing material to overcome the bar-rier of energy consumption and device aging of wearable electronics.The sensing material simultaneously exhibits high conductivity(up to 22 S m�1),low elastic modulus(23 kPa),and ultrahigh stretchability(1500%)with excel-lent robustness(consistent performance against 12000 mechanical cycling).A motion monitoring system is composed of intrinsically soft LM-embedded hydrogel as sensing material,a microcontroller,signal-processing circuits,Bluetooth transceiver,and self-organizing map developed software for the visu-alization of multi-dimensional data.This system integrating multiple functions including signal conditioning,processing,and wireless transmission achieves monitor hand gesture as well as sign-to-verbal translation.This approach provides an ideal strategy for deaf-mute communicating with normal people and broadens the application of wearable electronics.
基金Project supported by the National Natural Science Foundation of China(Nos.61573199 and 61571441)。
文摘In this study,the finite-time formation control of multi-agent systems with region constraints is studied.Multiple agents have first-order dynamics and a common target area.A novel control algorithm is proposed using local information and interaction.If the communication graph is undirected and connected and the desired framework is rigid,it is proved that the controller can be used to solve the formation problem with a target area.That is,all agents can enter the desired region in finite time while reaching and maintaining the desired formation shapes.Finally,a numerical example is given to illustrate the results.
