Shuwang Wu's research while affiliated with University of California, Los Angeles and other places

... He's group developed a tough and antifreezing hydrogel electrolyte for zinc-ion batteries (Figure 8b). [142] On one hand, the introduced inorganic salt (K + ) ions in PVA hydrogels inhibited ice nucleation. On another hand, the open-cell porous structures with strongly aggregated polymer chains provided interpermeating nanoconfinements to prevent ice propagation. ...

... Bioelectronic devices that track cardiac function in real time and provide targeted feedback therapy are urgently required to control disease deterioration and minimize fatal complications [3][4][5] . Recently, epicardium patches achieved synchronized electrical recording and stimulation to regulate arrhythmias through sophisticated component design [6][7][8] . Nevertheless, in vivo electrophysiological detection is susceptible to electromagnetic interference, causing signal artifacts that misinterpret cardiac function 9 . ...

... In addition, the incorporation of a salt solution might improve the mechanical performance of hydrogels. An example of this technique is given in the work by Wu et al. [39], who successfully balanced the anti-freezing and mechanical properties of hydrogels and advanced their application in sub-zero-temperature environments. As shown in Figure 1d, the authors used a salt solution replacement Scheme 1. Schematic of the functionalized ETCHs and their applications. ...

... Jomary et al. [88] applied experimental and molecular simulation methods to investigate the structural characteristics of poly (ethylene glycol) diacrylate (PEGDA) hydrogels, revealing the existence of a link between chain-chain interactions, hydrogel structure, and the equilibrium swelling behavior of this hydrogel polymer solution. Duan et al. [89] prepared poly(vinyl alcohol) (PVA) hydrogels with tunable anisotropy ratios by the bidirectional ice template method and investigated their structural and mechanical properties. Narges et al. [90] employed molecular dynamics simulations to examine the impact of three distinct types of crosslinked hydrogels (polyacrylamide (PAM), polyvinyl alcohol (PVA), and polyethylene glycol (PEG) hydrogels), as well as the volume fraction of PAM hydrogels (ranging from 5% to 15%), on the swelling and thermal characteristics of simulated samples. ...

... In the anion-assisted method, salicylic acid anion (Sal − ) is used to form large pores, and the amount required is significantly reduced, indicating that Sal − has superior micellar penetration compared to the oil phase. 31,32 The strong interaction between Sal − and CTA + micelles, including high miscibility and strong electrostatic attraction, drives Sal − to migrate into the micelles, and its hydrophobic part is embedded in the hydrophobic region of the micelles. 33−36 Therefore, the anion-assisted method is highly reproducible and the effect of the stirring rate on the particle structure is negligible. ...

... Ice accretion on surfaces bring safety hazards for a range of fields including transportation, aviation, power transmission and offshore petroleum extraction etc [1][2][3][4][5]. To avoid these hazards, many materials strategies have been trialed to prevent ice accretion over the past decades [6][7][8][9][10]. Active anti-icing materials with low ice adhesion strength were built to achieve easy ice removal, including self-lubricated surfaces and low modulus surfaces [11][12][13][14][15][16]. ...

... The reason is that it is difficult to achieve lightto-heat properties and transparency simultaneously. 209,210 To achieve photothermal and transparency properties, MXenes are the best candidates for the replacement of other types of carbon materials. 211,212 Niu et al. 191 developed a transparent self-healable solar anti-/deicing surface of MXene, which was assembled layer-by-layer. ...

... The low-defective GO suspension was prepared by a modified Hummers' method 55 . For this aim, 46 ml of H 2 SO 4 was taken into a beaker, which was stirred in an ice water bath at 200 rpm min −1 . ...

... [38] This excess Fe 3+ can greatly intensify the Fe 3+ /Fe 2+ redox cycle, thus reducing the coordination ability and further weakening the mechanical properties of hydrogels. [38][39][40] Additionally, Fe 3+ ions in a hydrogel hinder free-radical polymerization, resulting in mechanical degradation. [41] To address these issues, low-concentration Fe 3+ ions were introduced to the pre-gel solution before polymerization. ...

... The stability of these H-bonds is higher than that among water molecules, as depicted in Figure 6b. Some inorganic acids, such as sulfuric acid (H 2 SO 4 ) [102] and phosphoric acid (H 3 PO 4 ), [103] have similar effects. The introduction of water-miscible organic solvents into hydrogels is a straightforward process and can be applied to various hydrogel systems. ...