A flexible and self-healing supercapacitor with high energy density in low temperature operation was fabricated using a combination of biochar-based composite electrodes polyampholyte hydrogel electrolyte. Polyampholytes, novel class tough hydrogel, provide ability mechanical flexibility, as well for the aqueous Biochar is carbon material produced from low-temperature pyrolysis biological wastes; incorporation reduced graphene oxide conferred integrity electrical conductivity hence are...

Poly(glycerol sebacate) (PGS) and its derivatives make up an attractive class of biomaterial owing to their tunable mechanical properties with programmable biodegradability. In practice, however, the application PGS is often hampered by frequent inconsistency in reproducing process conditions. The stems from volatile nature glycerol during esterification process. this study, we suggest that degree (DE) can be used predict precisely physical status, properties, degradation materials. Young's...

In a cold night, clear window that will become opaque while retaining the indoor heat is highly desirable for both privacy and energy efficiency. A thermally responsive material controls transmittance of solar radiance (predominantly in visible near-infrared wavelengths) blackbody radiation (mainly mid-infrared) can realize such windows with minimal consumption. Here, we report smart coating made from polyampholyte hydrogel (PAH) transforms transparency state to opacity strengthens...

The physiological milieu of healthy skin is slightly acidic, with a pH value between 4 and 6, whereas for chronic or infected wounds, the above 7.3. As testing an effective way to monitor status novel smart hydrogel wound patch incorporating modified indicator dyes was developed in this study. Phenol red (PR), dye molecule, successfully methacrylate (MA) allow copolymerization alginate/polyacrylamide (PAAm) matrix. This covalent attachment prevented from leaching out prepared pH-responsive...

We report a simple approach to fabricate zinc oxide (ZnO) nanowire based electricity generators on three-dimensional (3D) graphene networks by utilizing commercial polyurethane (PU) sponge as structural template. Here, 3D network of is deposited from solution the template and then chemically reduced. Following steps ZnO growth, polydimethylsiloxane (PDMS) backfilling electrode lamination completes fabrication processes. When compared conventional with 2D planar geometry, provides structure...

The phase behavior of water in hydrogels has a broad impact on many health and energy applications. Our previous study showed that polyampholyte hydrogel the potential to be used as an aqueous gel electrolyte electrochemical storage devices at −30 °C due enhanced low-temperature conductivity. In this study, we detail polymer structure conductivity, explaining finding with model charge-balanced polyampholyte, poly(4-vinylbenzenesulfonate-co-[3-(methacryloylamino)propyl]trimethylammonium...

Conducting polymer coatings on metal electrodes are an efficient solution to improve neural signal recording and stimulation, due their mixed electronic-ionic conduction biocompatibility. To date, only a few studies have been reported conducting metallic wire for muscle recording. Chronic of freely moving animals can be challenging acquire with coated electrodes, movement around the electrode that increase instances coating delamination device failure. The poor adhesion polymers some...

Orientation is an important parameter to identify the working status of a parabolic antenna. Polarimetric inverse synthetic aperture radar (Pol-ISAR) effective approach sense antenna, but imaging process may be seriously deteriorated by propagation effect under rainfall condition. This paper proposes method compensate for accurately estimating orientation antenna from Pol-ISAR images. Numerical simulations show that impact serious, it can well compensated proposed in this paper.

Polyampholyte hydrogels (PAHs) constitute a class of physical gels with cross-linking originating from inter- and intrachain ionic between countercharged functional groups. In our previous report, we have shown that PAH has the potential to be gel electrolyte in electrochemical energy storage devices. this work, further understanding charge-balanced as host material for electrolytes by studying effect dialysis on mechanical properties conductivities PAHs, whereas these are compared those...

The emergence of the Internet Things (IoT) necessitates development electronic components with various form factors and mechanical properties. 3D printing is an effective tool to realize objects arbitrary factors. Various printable materials have recently been commercialized; among them, stretchable are particularly useful in IoT because they enable adaptability dimensional change electronics. Most these are, however, not electrically conductive; conductive coating can functionality. Here,...

Sponges and hydrogel films based on the conducting polymer PEDOT:PSS exhibit electromagnetic interference shielding properties, with effectiveness as high 105 dB.

In order to prepare a cellulose-based water absorbent material in an environmentally-friendly way, cellulose-graft-polyacrylamide (cellulose-g-PAM) copolymer is synthesized by situ graft copolymerization through co-rotating twin-screw extruder. An ionic liquid, namely 1-N-butyl-3-methylimidazolium chloride, used as the reaction medium and ceric ammonium nitrate initiator. The effect evaluated study of thermal rheological properties copolymers. FTIR elemental analysis results show that amide...

In order to prepare bio-degradable cellulose-based fibers in an environmentally-friendly way, graft copolymerization of <sc>l</sc>-lactide (LLA) onto cellulose was carried out through a co-rotating twin-screw extruder and then the blend melt directly spun.

Under rainy conditions, atmospheric settling particles have significant depolarization effects on radar waves and thus affect the target detection performance. This paper establishes an extended model for fully polarized under complex conditions proposes two polarization waveform optimization methods by taking into account transmission effect of rainfall. If rainfall information is known, transmitting receiving are optimized maximizing system Signal-to-Clutter/Noise Ratio (SCNR). While...

Cu₂O coated Cu mesh with switchable wettability was used for both “water-removal” and “oil-removal” oil/water mixture separation modes.

The solubility of thiamine nitrate in {(methanol, acetone, isopropanol) + water} solvents will provide essential support for crystallization design and further theoretical studies. In this study, the was experimentally measured over temperatures ranging from 278.15 to 313.15 K under atmospheric pressure using a dynamic method. increased with increasing temperature at constant solvent composition. dissolving capacity three binary mixtures low ratio water ranked as methanol > acetone...