Gerber Technology, a business unit of Gerber Scientific, Inc. (NYSE: GRB) and the world leader in automated CAD/CAM and PLM solutions for the apparel and flexible materials industry, introduced two new software offeri...Gerber Technology, a business unit of Gerber Scientific, Inc. (NYSE: GRB) and the world leader in automated CAD/CAM and PLM solutions for the apparel and flexible materials industry, introduced two new software offerings –展开更多
Modifed starch flms are gaining attention as biodegradable and sustainable materials in the food packaging industry.However,their inherent properties,including their brittleness and low antimicrobial and antioxidant c...Modifed starch flms are gaining attention as biodegradable and sustainable materials in the food packaging industry.However,their inherent properties,including their brittleness and low antimicrobial and antioxidant capacities,limit their extensive application.To address these shortcomings,in this study,a composite flm was developed using potato-modifed starch(PMS)as the base material,enhanced with konjac glucomannan(KGM),Pleurotus citrinopileatus polysaccharide(PCP),and nano titanium dioxide(nano TiO_(2)).Additionally,PCP and nano TiO_(2),which are bioactive components,were incorporated to improve the functional properties of the flms,promoting their application in food preservation.The optimal composition of the composite flms was determined through a fuzzy comprehensive evaluation,and the best performance was achieved with 10 g/L of PCP and 1.5 g/L of nano TiO_(2).These composite flms exhibited high mechanical strength,antimicrobial capacity,and antioxidant capacity while being noncytotoxic.The practical effcacy of the composite flms was verifed by applying them to preserve fresh-cut yams at room temperature,where they effectively delayed spoilage and maintained yam quality.This study demonstrates that PMS/KGM/PCP/nano TiO2 composite flms can signifcantly enhance the shelf life of fresh produce,providing a viable route for eco-friendly food preservation.展开更多
Mg_(3)Bi_(2)-based flms are promising near-room-temperature thermoelectric materials for the development of fexible thermoelectric devices.However,the high hole concentration caused by the abundance of intrinsic Mg va...Mg_(3)Bi_(2)-based flms are promising near-room-temperature thermoelectric materials for the development of fexible thermoelectric devices.However,the high hole concentration caused by the abundance of intrinsic Mg vacancies easily leads to deterioration of electrical properties,especially for p-type Mg_(3)Bi_(2) flm.And the optimization of thermal conductivity of the Mg_(3)Bi_(2)-based flms is barely investigated.In this work,we demonstrate the improved thermoelectric performances of p-type Mg_(3)Bi_(2) through Ag doping by magnetron sputtering.This doping successfully reduces the hole concentration and broadens the band gap of Mg_(3)Bi_(2),thus resulting in a peak power factor of 442μW m−1 K−2 at 525 K.At the same time,Ag doping-induced fuctuations in mass and microscopic strain efectively enhanced the phonon scattering to reduce the lattice thermal conductivity.Consequently,a maximum thermoelectric fgure of merit of 0.22 is achieved at 525 K.Its near-roomtemperature thermoelectric performances demonstrate superior performance compared to many Mg_(3)Bi_(2)-based flms.To further evaluate its potential for thermoelectric power generation,we fabricated a thermoelectric device using Ag-doped Mg_(3)Bi_(2) flms,which achieved a power density of 864μW cm⁻2 at 35 K temperature diference.This study presents an efective strategy for the advancement of Mg_(3)Bi_(2)-based flms for application in micro-thermoelectric devices.展开更多
文摘Gerber Technology, a business unit of Gerber Scientific, Inc. (NYSE: GRB) and the world leader in automated CAD/CAM and PLM solutions for the apparel and flexible materials industry, introduced two new software offerings –
基金supported by the Shenyang Medical College Scientifc Research Innovation Fund(Nos.20182033 and 20191038),China。
文摘Modifed starch flms are gaining attention as biodegradable and sustainable materials in the food packaging industry.However,their inherent properties,including their brittleness and low antimicrobial and antioxidant capacities,limit their extensive application.To address these shortcomings,in this study,a composite flm was developed using potato-modifed starch(PMS)as the base material,enhanced with konjac glucomannan(KGM),Pleurotus citrinopileatus polysaccharide(PCP),and nano titanium dioxide(nano TiO_(2)).Additionally,PCP and nano TiO_(2),which are bioactive components,were incorporated to improve the functional properties of the flms,promoting their application in food preservation.The optimal composition of the composite flms was determined through a fuzzy comprehensive evaluation,and the best performance was achieved with 10 g/L of PCP and 1.5 g/L of nano TiO_(2).These composite flms exhibited high mechanical strength,antimicrobial capacity,and antioxidant capacity while being noncytotoxic.The practical effcacy of the composite flms was verifed by applying them to preserve fresh-cut yams at room temperature,where they effectively delayed spoilage and maintained yam quality.This study demonstrates that PMS/KGM/PCP/nano TiO2 composite flms can signifcantly enhance the shelf life of fresh produce,providing a viable route for eco-friendly food preservation.
基金supported by the National Natural Science Foundation of China(Nos.52073290 and 51927803)the Science Fund for Distinguished Young Scholars of Liaoning Province(No.2023JH6/100500004)the Shenyang Science and Technology Plan Project(No.23-407-3-23).
文摘Mg_(3)Bi_(2)-based flms are promising near-room-temperature thermoelectric materials for the development of fexible thermoelectric devices.However,the high hole concentration caused by the abundance of intrinsic Mg vacancies easily leads to deterioration of electrical properties,especially for p-type Mg_(3)Bi_(2) flm.And the optimization of thermal conductivity of the Mg_(3)Bi_(2)-based flms is barely investigated.In this work,we demonstrate the improved thermoelectric performances of p-type Mg_(3)Bi_(2) through Ag doping by magnetron sputtering.This doping successfully reduces the hole concentration and broadens the band gap of Mg_(3)Bi_(2),thus resulting in a peak power factor of 442μW m−1 K−2 at 525 K.At the same time,Ag doping-induced fuctuations in mass and microscopic strain efectively enhanced the phonon scattering to reduce the lattice thermal conductivity.Consequently,a maximum thermoelectric fgure of merit of 0.22 is achieved at 525 K.Its near-roomtemperature thermoelectric performances demonstrate superior performance compared to many Mg_(3)Bi_(2)-based flms.To further evaluate its potential for thermoelectric power generation,we fabricated a thermoelectric device using Ag-doped Mg_(3)Bi_(2) flms,which achieved a power density of 864μW cm⁻2 at 35 K temperature diference.This study presents an efective strategy for the advancement of Mg_(3)Bi_(2)-based flms for application in micro-thermoelectric devices.
