Polymer, Год журнала: 2025, Номер unknown, С. 128430 - 128430
Опубликована: Апрель 1, 2025
Язык: Английский
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 17, 2025
Abstract Hierarchical pore structures offer a promising strategy for developing high‐performance electromagnetic wave (EMW) absorption materials with broad effective bandwidth (EAB, reflection loss −10 dB) and reduced thickness. In this work, hyperbranched siloxane (HBPSi), featuring unparalleled 3D structure high thermal stability, is integrated into polyimide (PI)/carbon nanotube (CNT) composite aerogels to fabricate hierarchical architecture simply, resulting PI macro‐mesoporous exhibit exceptional EMW absorption, excellent mechanical properties, low conductivities, even minimal CNT content of just 7.45 wt.%. This intricate optimizes impedance matching air, signifying augmented multiple reflections scattering in the porous structure, thus, aerogel density (0.123 g cm −3 ), minimum (RL min ) −51.13 dB an EAB 4.4 GHz at thickness 3.4 mm. The innovative construction PI/CNT provides avenue advancement high‐efficiency materials.
Язык: Английский
Процитировано
1
Energy Materials, Год журнала: 2025, Номер 5(7)
Опубликована: Март 10, 2025
With the advancement of wearable and implantable health medical electronics, biocompatible miniature energy storage devices were developed rapidly. In particular, supercapacitors (BMSCs) have advantages conventional supercapacitors, such as high-power density, fast charging/discharging rate, long operating lifetime, well strong selectivity materials. They are expected to play an important role in personalized electronic integration systems. Biocompatibility involves biosafety materials relates mechanics geometrical forms. For example, BMSCs should be thin compact, ensuring ease portability comfort for users. also flexible stretchable conform skin or tissue, providing stable power electronics even under deformation. Furthermore, biodegradability/ bioabsorbability ensures they both body- environment-friendly. This review summarizes recent research progress devices, including basic requirements selection components. Additionally, advanced applications multifunctional systems real-time monitoring treatment introduced, along with associated challenges prospects.
Язык: Английский
Процитировано
1
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Март 18, 2025
Abstract Freeze casting is a versatile technique for organizing low‐dimensional building blocks into ordered porous structural materials. However, the freeze‐casting fabrication of materials with robust and topologically elastic skeleton to withstand harsh conditions challenging. Herein, silanized ultra‐homogeneous nanocomposite aerogel fabricated using gelation‐constrained strategy. Diverging from traditional methods employing solution precursor, approach involves process utilizing rational‐designed supramolecular hydrogel as quasi‐solid precursor. The within hydrogel, enclosed in dense hydrogen‐bonded network, effectively mitigate secondary agglomeration caused by ice crystallization concentration enrichment during freeze‐casting. By forming cellular an interconnected nanoparticle resulting aerogels exhibit exceptional mechanical elasticity retaining over 98% height after 10 000 compression cycles, along superior electrical properties showing 78.9% increase conductivity compared conventional aerogels. Wearable piezoresistive sensors these demonstrate outstanding force sensing capabilities, broad linear range (0–17.6 kPa) high sensitivity (1.32 kPa −1 ). When integrated intermediate layer protective garments, offer insulation fire resistance, enabling them endure like repetitive extreme deformations, exposure high‐temperature flames, water‐erosion damages.
Язык: Английский
Процитировано
1
Advanced Functional Materials, Год журнала: 2024, Номер unknown
Опубликована: Окт. 9, 2024
Abstract The development of highly stretchable self‐powered electronic skins with a broad detection range is urgently needed but remains great challenge. Herein, unprecedented stretchable, broad‐range‐response, supercapacitor‐type, one‐body, and are developed by assembling porous polyurethane/polypyrrole electrode, polyacrylic acid/polyacrylamide ionic gel electrolyte, polyurethane/MXene electrode. folded structure the electrodes significantly enhances stretchability, while modulus‐gradient multilayer device effectively broadens pressure range. combine dynamic/static sensing, ultrabroad (20 Pa–3.5 MPa), ultrahigh stretchability up to 387%, excellent compression stability (5000 cycles under 195 kPa), good stretching (500 200% tensile strain). They have capability monitoring human body motions, physiological signals, high pressures from motorcycle tires, as well tactile sensing robotic grippers. In addition, they can be applied for thermal management electromagnetic shielding devices. This work provides new strategy multifunctional wearable electronics sensors.
Язык: Английский
Процитировано
4
Energy storage materials, Год журнала: 2025, Номер unknown, С. 104085 - 104085
Опубликована: Фев. 1, 2025
Язык: Английский
Процитировано
0
Inorganic Chemistry Communications, Год журнала: 2025, Номер unknown, С. 114139 - 114139
Опубликована: Фев. 1, 2025
Язык: Английский
Процитировано
0
Carbon, Год журнала: 2025, Номер unknown, С. 120258 - 120258
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
0
Small, Год журнала: 2025, Номер unknown
Опубликована: Апрель 13, 2025
Abstract The application of composites that integrate functions thermally conductive and electromagnetic interference (EMI) shielding in advanced microelectronic packaging has provided an effective solution to the heat dissipation compatibility issues electronic devices. Graphite flakes, with their outstanding electrical thermal conductivities, are widely regarded as ideal candidates for creating achieve both conductivity EMI shielding. However, anisotropic properties graphite lead significant differences different directions, which may limit applications. To overcome this issue, vertically aligned (VG), nickel‐coated (Ni@G), silicone gel (SG) (VG‐Ni@G‐SG) have been successfully fabricated via shear‐induced alignment ultrasonic cutting technology. VG‐Ni@G‐SG synchronously high through‐plane 15.8 W m −1 K near‐field effectiveness (NF‐SE) −68 dB frequency range 500 MHz–7 GHz, also exhibit a low compression modulus 0.6 MPa, is essential reducing thickness improving sealing electronics. demonstrate promising prospects miniaturization performance modern
Язык: Английский
Процитировано
0
Small, Год журнала: 2025, Номер unknown
Опубликована: Апрель 14, 2025
Abstract Elastomer‐based resistive super‐thin film strain sensors show great application potentials in electronic skins, human–machine interaction systems, wearable devices for healthcare, and machine learning algorithms. However, it is challenging to accurately monitor the deformation of human body joints organs with curved surfaces (e.g., knees, throats, finger joints) by only taking advantage material thickness elasticity conventional 2D sensors. Herein, a simple strategy developed fabricate conformal elastomeric thin periodic 3D microstructure inspired ridges valleys skin accurate signal acquisition. Specifically, an 8‐micrometer‐thick elastic sensor fabricated via thermoforming followed situ chemical growth silver nanoparticles. The exhibit excellent linearity (R 2 = 0.99) relatively high sensitivity (gauge factor 14) over wide range (≈43%), ultra‐low detection limit 0.025%, enabling potential applications healthcare monitoring air leakage detection. Thus, this study unveils methodology process microstructure‐enabled conformable sensors, which good conformability multiple mechanical sensing functions advancing development next‐generation flexible
Язык: Английский
Процитировано
0
Polymer, Год журнала: 2025, Номер unknown, С. 128430 - 128430
Опубликована: Апрель 1, 2025
Язык: Английский
Процитировано
0