Magnetically guided chemical locomotion of self-propelling paperbots

Abstract

Self-propelling microjets with multimodal chemical and magnetic controls on the motion were prepared from the printed waste papers coated with MnO2 nanoparticles. While the magnetic remote control was infused from the ferromagnetic coating of the printer ink, the nanoparticles decomposed peroxide fuel to induce locomotion by ejecting oxygen bubbles though the microjet. The paper microjets could be loaded with the fluorescent rhodamine 6G (R6G), a model payload, before remotely guided through an external magnetic field inside fluidic environment. The reported methodology provides an economic, scalable, and biodegradable scheme for the design and development of bubble-propelled microengines, which are capable of directed locomotion.

Self‐Propelled Soft Protein Microtubes with a Pt Nanoparticle Interior Surface

“…Moreover, biologically active proteins cannot be inserted into the tube wall. Some low‐cost preparation protocols of microengines have been recently reported . On the one hand, wet template synthesis by using alternate layer‐by‐layer (LbL) assembly of proteins in the porous polycarbonate (PC) membrane is a beneficial technique to create well‐designed soft protein nano/microtubes .…”

“…Some low-cost preparation protocols of microengines have been recentlyr eported. [9][10][11] On the one hand, wet template synthesis by using alternate layer-bylayer (LbL) assembly of proteins in the porous polycarbonate (PC) membrane is ab eneficial technique to create well-designed soft protein nano/microtubes. [12][13][14][15][16][17] We demonstrated in an earlierstudy that subsequent dissolution of the PC template by using N,N-dimethylformamide (DMF) yielded uniform hollow cylinders made of protein multilayers.…”

Self-propelling mini-motor and its applications in supramolecular self-assembly and energy conversion

“…首先, [55] .当马达中引入磁性粒子时, 马达会对外 界磁场及溶液 pH 共同作用, 从而实现了双响应行为 (图 11(b)) [56] . 另外, 以滤纸为基底, Bandyopadhyay 等 [57] 在其底部与上部分别溅射一层二氧化锰纳米粒 子与磁性纳米粒子, 并在上层表面负载罗丹明 6G 分 图 9 金属铂催化双氧水产生氧气泡体系驱动物体运动. (a) 厘米级三维人造鱼的运动及其磁响应性 [51] ; (b) 厘米级三维人造 鱼用于环境治理 [52] (网络版彩图) 图 10 气泡驱动物体进行水平运动.…”

“…(a) pH 响应性水平运动 [53] ; (b) 氢气泡-氧气泡驱动的水平往复运动 [54] (网络版彩图) http://engine.scichina.com/doi/10.1360/N032016-00161 图 11 催化剂-双氧水产生氧气泡体系驱动物体运动. (a) pH 响应性水平运动 [55] ; (b) pH-磁场双响应性水平运动 [56] ; (c) 磁场响 应性纸器件的水平运动 [57] [58] .…”

Dynamics of a magnetic active Brownian particle under a uniform magnetic field

“…Most of the experimental studies dealing with magnetic control of ABPs have been focused on monitoring (via particle tracking) their spatial trajectory in the presence of an externally applied magnetic field [19][20][21][22][23][24][25][26]. Even when these studies provide very useful information related to their movement (e.g.…”