Author Affiliations
Abstract
Carnivorous plants, for instance, Dionaea muscipula and Nepenthes pitcher plant, inspired the innovation of advanced stimuli-responsive actuators and lubricant-infused slippery surfaces, respectively. However, hybrid bionic devices that combine the active and passive prey trapping capabilities of the two kinds of carnivorous plants remain a challenge. Herein, we report a moisture responsive shape-morphing slippery surface that enables both moisture responsive shape-morphing and oil-lubricated water repellency for simultaneous active- and passive-droplet manipulation. The moisture deformable slippery surface is prepared by creating biomimetic microstructures on graphene oxide (GO) membrane via femtosecond laser direct writing and subsequent lubricating with a thin layer of oil on the laser structured reduced GO (LRGO) surface. The integration of a lubricant-infused slippery surface with an LRGO/GO bilayer actuator endows the actuator with droplet sliding ability and promotes the moisture deformation performance due to oil-enhanced water repellency of the inert layer (LRGO). Based on the shape-morphing slippery surface, we prepared a series of proof-of-concept actuators, including a moisture-response Dionaea muscipula actuator, a smart frog tongue, and a smart flower, demonstrating their versatility for active/passive trapping, droplet manipulation, and sensing.Carnivorous plants, for instance, Dionaea muscipula and Nepenthes pitcher plant, inspired the innovation of advanced stimuli-responsive actuators and lubricant-infused slippery surfaces, respectively. However, hybrid bionic devices that combine the active and passive prey trapping capabilities of the two kinds of carnivorous plants remain a challenge. Herein, we report a moisture responsive shape-morphing slippery surface that enables both moisture responsive shape-morphing and oil-lubricated water repellency for simultaneous active- and passive-droplet manipulation. The moisture deformable slippery surface is prepared by creating biomimetic microstructures on graphene oxide (GO) membrane via femtosecond laser direct writing and subsequent lubricating with a thin layer of oil on the laser structured reduced GO (LRGO) surface. The integration of a lubricant-infused slippery surface with an LRGO/GO bilayer actuator endows the actuator with droplet sliding ability and promotes the moisture deformation performance due to oil-enhanced water repellency of the inert layer (LRGO). Based on the shape-morphing slippery surface, we prepared a series of proof-of-concept actuators, including a moisture-response Dionaea muscipula actuator, a smart frog tongue, and a smart flower, demonstrating their versatility for active/passive trapping, droplet manipulation, and sensing.
femtosecond laser fabrication graphene oxide moisture responsive actuators slippery surface bionic devices Opto-Electronic Advances
2023, 6(1): 210163
Author Affiliations
Abstract
Xi’an Modern Chemistry Research Institute, Xi’an 710065, China
A novel intermediate connector (IC) was formed which was composed of aluminum (Al, 3 nm)/1,4,5,8,9,11-hexaazatriphenylene-hexacarbonitrile (HAT-CN). The 3-nm-thick Al in the IC is certified to efficiently generate in-trinsic charge carriers, and the HAT-CN is proved to work as the holes injection layer (HIL) for the corresponding electroluminescent (EL) unit simultaneously. This simply IC comprehensively takes advantage of the features of the HAT-CN so as to stack two single EL units without introducing extra material. In addition to a significant enhance-ment in luminance and current efficiency, a current efficiency (CE) of 10.2 cd/A and a luminance of 2 042 cd/m2 under the current density 20 mA/cm2 of this tandem organic light emitting device (TOLED) are yielded, which are notably almost the sum of that of the two single-unit devices.
光电子快报（英文版）
2019, 15(2): 85
1 北京大学公共卫生学院, 北京100191
2 北京市理化分析测试中心, 北京100089
3 北京大学医药卫生分析中心, 北京100191
建立了离子色谱-电感耦合等离子体质谱联用技术(IC-ICP-MS)测定溶液中溴酸根离子(BrO-3)和溴离子(Br-)的方法。 使用Hamilton PRP X-100(150×4.1 mm, 10 μm)阴离子交换柱, On-guard Ⅱ RP(4×50 mm)保护柱, 采用10 mmol·L-1 NH4NO3作为淋洗液, 在流速2 mL·min-1下分离BrO-3和Br-。 其中BrO-3在标准溶液浓度4.8～160.0 ng·L-1范围内线性良好, y=250.31x-45.43, R2=0.999 9; Br-在标准溶液浓度4.2～140.0 ng·L-1范围内线性良好, y=186.84x-127.10, R2=0.999 4。 加标回收率分别为98.9%～109.5%和97.4%～106.1%。 测定样品包括中成药、 瓶装饮用水、 自来水、 河水、 酒类、 果汁和碳酸饮料等。 其中14种瓶装饮用水和2种自来水中检出BrO-3, 其余样品均未检出BrO-3。 而Br-则普遍存在于各种样品中。
中成药 水体及饮料 IC IC ICP-MS ICP-MS Chinese patent drug Water and beverage BrO-3 BrO-3 Br- Br- 光谱学与光谱分析
2010, 30(11): 3136
