Sugar transfer of nanomaterials and flexible electrodes

Abstract

Nanomaterials with various dimensionalities (e.g., nanowires, nanofilms, two-dimensional materials, and three-dimensional nanostructures) have shown great potential in the recent development of flexible electronics. Conventionally, organic solvents are inevitable while integrating nanomaterials onto flexible substrates, where polymer mediator-assisted transfer techniques are involved. This often damages the flexible substrate and thus hamper the large-scale application of nanomaterials. Here we report a method using watersoluble sugar as a mediator to facilely transfer nanomaterials onto rigid or flexible substrates. This method requires no organic solvent during transfer. More importantly, the morphology and properties of transferred nanomaterials, such as shape, microstructure, resistivity, and transmittance are well preserved on the target substrate. We believe that this universal and rapid transfer method can greatly advance the applications of nanomaterials in the field of flexible devices and beyond. ARTICLE HISTORY

Advances in Flexible Optoelectronics Based on Chemical Vapor Deposition‐Grown Graphene

“…[ 5f ] While for the flexible optoelectronic devices, polymer substrates such as PET, PEN, and polydimethylsiloxanes (PDMS) are generally used, [ 26 ] which brings extra challenges including how to improve contact between graphene and the polymer substrate, [ 26a,27 ] and how to avoid the swelling effect of polymer substrate in organic solvents, etc. [ 28 ] This section will discuss these challenges and solutions in detail.…”

“…proposed water‐soluble sugar as a support layer. [ 28 ] The monolayer graphene maintained good electrical properties with an R sh of 575 Ω sq −1 after the sugar removal. Interestingly, novel substrates such as paper and cloth have also attracted attention.…”

Fast and efficient electrochemical thinning of ultra-large supported and free-standing MoS2 layers on gold surfaces

“…Large flakes are transferred using this approach, however, the transfer yield is low. In the second approach we adapted the use of sucrose 34 to successfully increase the trans-fer yield. Using this route, the number of transferred flakes was significantly higher and their lateral dimensions were larger.…”

A carbon nanotube-based textile pressure sensor with high-temperature resistance

“…A flexible sensor usually has characteristics of good flexibility, and ductility, or even can adapt to the measurement of external stress signals on complex curved surfaces. 2–4 Textile pressure sensors are one of the flexible electronic devices, which are realized by building electrical pressure sensors on textiles with various operation modes, including resistive, 5–7 capacitive, 8–10 triboelectric, 11–13 and piezoelectric 14–16 types. The main concerns for pressure-sensitive textiles focus on exploring new materials or developing novel structures to improve the pressure sensitivity, response speed, fatigue resistance, etc.…”