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您的检索式：作者名="Jesper Edberg"
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| 1 | Laser-induced graphitization of a forest-based ink for use in flexible and printed electronics显示文摘Laser-induced graphitization(LIG)is a method of converting a carbon-rich precursor into a highly conductive graphite-like carbon by laser scribing.This method has shown great promise as a versatile and low-cost patterning technique.Here we show for the first time how an ink based on cellulose and lignin can be patterned using screen printing followed by laser graphitization.Screen printing is one of the most commonly used manufacturing techniques of printed electronics,making this approach compatible with existing processing of various devices.The use of forest-based materials opens the possibility of producing green and sustainable electronics.Pre-patterning of the ink enables carbon patterns without residual precursor between the patterns.We investigated the effect of the ink composition,laser parameters,and additives on the conductivity and structure of the resulting carbon and could achieve low sheet resistance of 3.8Ωsq^(−1) and a high degree of graphitization.We demonstrated that the process is compatible with printed electronics and finally manufactured a humidity sensor which uses lignin as the sensing layer and graphitized lignin as the electrodes. | Jesper Edberg Robert Brooke Omid Hosseinaei Andreas Fall Kosala Wijeratne Mats Sandberg | 2020 | npj Flexible Electronics2020，4，1： | 1 |
| 2 | Spray-coated paper supercapacitors显示文摘The increasing demands to further electrify and digitalize our society set demands for a green electrical energy storage technology that can be scaled between very small,and heavily distributed electrical energy sources,to very large volumes.Such technology must be compatible with fast-throughput,large-volume and low-cost fabrication processes,such as using printing and coating techniques.Here,we demonstrate a sequential production protocol to fabricate supercapacitors including electrodes based on cellulose nanofibrils(CNF)and the conducting polymer PEDOT:PSS.Thin and lightweight paper electrodes,carbon adhesion layers and the gel electrolyte are fabricated using spray coating,screen printing,and bar coating,respectively.These all solid-state supercapacitors are flexible,mechanically robust and exhibit a low equivalent series resistance(0.22Ω),thus resulting in a high power density(∼104 W/kg)energy technology.The supercapacitors are combined and connected to a power management circuit to demonstrate a smart packaging application.This work shows that operational and embedded supercapacitors can be manufactured in a manner to allow for the integration with,for instance smart packaging solutions,thus enabling powered,active internet-of-things(IoT)devices in a highly distributed application. | Mehmet Girayhan Say Robert Brooke Jesper Edberg Andrea Grimoldi Dagmawi Belaineh Isak Engquist Magnus Berggren | 2020 | npj Flexible Electronics2020，4，1： | 0 |
| 3 | Ultrasensitive electrolyte-assisted temperature sensor显示文摘Heat sensors form an important class of devices that are used across multiple fields and sectors.For applications such as electronic skin and health monitoring,it is particularly advantageous if the output electronic signals are not only high,stable,and reproducible,but also self-generated to minimize power consumption.Here,we present an ultrasensitive heat sensing concept that fulfills these criteria while also being compatible with scalable low-cost manufacturing on flexible substrates.The concept resembles a traditional thermocouple,but with separated electrodes bridged by a gel-like electrolyte and with orders of magnitudes higher signals(around 11 mV K^(−1)).The sensor pixels provide stable and reproducible signals upon heating,which,for example,could be used for heat mapping.Further modification to plasmonic nanohole metasurface electrodes made the sensors capable of also detecting light-induced heating.Finally,we present devices on flexible substrates and show that they can be used to detect human touch. | Mina Shiran Chaharsoughi Jesper Edberg Peter Andersson Ersman Xavier Crispin Dan Zhao Magnus P.Jonsson | 2020 | npj Flexible Electronics2020，4，1： | 0 |
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