| 1. |
- Khaliliazar, Shirin, et al.
(författare)
-
Woven Electroanalytical Biosensor for Nucleic AcidAmplification Tests
- 2021
-
Ingår i: Advanced Healthcare Materials. - : Wiley-VCH Verlagsgesellschaft. - 2192-2640 .- 2192-2659. ; 10:11, s. 2100034-
-
Tidskriftsartikel (refereegranskat)abstract
- Fiber-based biosensors enable a new approach in analytical diagnosticdevices. The majority of textile-based biosensors, however, rely oncolorimetric detection. Here a woven biosensor that integrates microfluidicsstructures in combination with an electroanalytical readout based on athiol-self-assembled monolayer (SAM) for Nucleic Acid Amplification Testing,NAATs is shown. Two types of fiber-based electrodes are systematicallycharacterized: pure gold microwires (bond wire) and off-the-shelf plasmagold-coated polyester multifilament threads to evaluate their potential to formSAMs on their surface and their electrochemical performance in woven textile.A woven electrochemical DNA (E-DNA) sensor using a SAM-based stem-loopprobe-modified gold microwire is fabricated. These sensors can specificallydetect unpurified, isothermally amplified genomic DNA of Staphylococcusepidermidis (10 copies/μL) by recombinase polymerase amplification (RPA).This work demonstrates that textile-based biosensors have the potential forintegrating and being employed as automated, sample-to-answer analyticaldevices for point-of-care (POC) diagnostics.
|
|
| 2. |
|
|
| 3. |
- Wang, Zhen, et al.
(författare)
-
Layer-by-Layer Assembly of Strong Thin Films with High Lithium Ion Conductance for Batteries and Beyond
- 2021
-
Ingår i: Small. - : Wiley. - 1613-6810 .- 1613-6829. ; 17:32, s. 2100954-
-
Tidskriftsartikel (refereegranskat)abstract
- Polyethylene oxide (PEO) is one of the most widely used polymeric ion conductors which has the potential for a wide range of applications in energy storage. The enhancement of ionic conductivity of PEO-based electrolytes is generally achieved by sacrificing the mechanical properties. Using layer-by-layer (LbL) self-assembly with a nanoscale precision, mechanically strong and self-healable PEO/polyacrylic acid composite thin films with a high Li+ conductivity of 2.3 ± 0.8 × 10−4 S cm−1 at 30 °C, and a strength of 3.7 MPa is prepared. These values make the LbL composite among the best recorded multifunctional solid electrolytes. The electrolyte thin film withstands at least 1000 cycles of striping/plating of Li at 0.05 mA cm−2. It is further shown that the LbL thin films can be used as separators for Li-ion batteries to deliver a capacity of 116 mAh g−1 at 0.1 C in an all-LbL-assembled lithium iron phosphate/lithium titanate battery. Finally, it is demonstrated that the thin films can be used as ion-conducting substrates for flexible electrochemical devices, including micro supercapacitors and electrochemical transistors.
|
|
| 4. |
- Wang, Zhen, et al.
(författare)
-
Layer-by-Layer Self-Assembled Nanostructured Electrodes for Lithium-Ion Batteries
- 2021
-
Ingår i: Small. - : Wiley-VCH Verlag. - 1613-6810 .- 1613-6829. ; 17:6
-
Tidskriftsartikel (refereegranskat)abstract
- Gaining control over the nanoscale assembly of different electrode components in energy storage systems can open the door for design and fabrication of new electrode and device architectures that are not currently feasible. This work presents aqueous layer-by-layer (LbL) self-assembly as a route towards design and fabrication of advanced lithium-ion batteries (LIBs) with unprecedented control over the structure of the electrode at the nanoscale, and with possibilities for various new designs of batteries beyond the conventional planar systems. LbL self-assembly is a greener fabrication route utilizing aqueous dispersions that allow various Li+ intercalating materials assembled in complex 3D porous substrates. The spatial precision of positioning of the electrode components, including ion intercalating phase and electron-conducting phase, is down to nanometer resolution. This capable approach makes a lithium titanate anode delivering a specific capacity of 167 mAh g−1 at 0.1C and having comparable performances to conventional slurry-cast electrodes at current densities up to 100C. It also enables high flexibility in the design and fabrication of the electrodes where various advanced multilayered nanostructures can be tailored for optimal electrode performance by choosing cationic polyelectrolytes with different molecular sizes. A full-cell LIB with excellent mechanical resilience is built on porous insulating foams.
|
|
