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CALL FOR PAPERS: Materials for Carbon Neutral Energy Cycle and Carbon Negative Society

Excess carbon emissions have greatly impacted the human society...We  announce call for papers for Review/Original Articles, awaiting submissions on these topics by June 30, 2024.

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  • Call for papers

    'Higher-order Functional Mesostructures’ focuses on the most recent innovations in hierarchical mesostructured materials based on nanotechnology and nanoarchitectonics.

  • Special Issue

    SPECIAL ISSUE | Hydrogels are of great interests from the viewpoints of their diverse applications such as disposal water absorbent, tissue engineering, drug delivery, etc. New synthetic techniques as well as analytical methods have opened new gates to intelligent and advanced hydrogel-related materials.

  • Latest article

    Twist angle-dependent transport properties of twisted bilayer graphene

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  • Organic electrode materials have gained considerable interest in the area of energy storage owing to their cost effectiveness, stability, tunable nature and high power. The use of natural ingredients, carbon-based materials and polymers for fabrication impart flexibility and light weight to the gadgets. Organic electrode materials present the potential for biodegradable energy storage solutions in batteries and supercapacitors, fostering innovation in sustainable technology.

    • P. M. Hari Prasad
    • G. Malavika
    • Zeena S. Pillai
    Review ArticleOpen Access
  • We systematically characterized the twist-angle-dependent electronic and transport properties of twisted bilayer graphene (tBLG) grown via chemical vapor deposition. Parameters such as charge-neutral point voltage, carrier concentration, resistance, and mobility were examined across a wide range of twist angles from 0° to 30°. Our experimental results demonstrated that these parameters exhibited twist-angle-dependent trends corresponding to the moiré period. Notably, high twist angles exceeding 9° displayed practically useful features, including improved mobilities compared to single-layer graphene. Additionally, we found that the doping states and work functions showed weak dependence on the twist angles, a finding corroborated by first-principles calculations.

    • Jin Hong Kim
    • Seoung-Hun Kang
    • Jin Sik Choi
    ArticleOpen Access
  • Magnetically assisted 3D printing allows customizable electromagnetic interference (EMI) shielding effectiveness (SE). Aligning high-density graphite microplatelets during the 3D printing parallel or perpendicularly to incident waves leads to their tailored reflection and transmission. Designing the micro/macrostructure of materials allows customization and enhancement of electronic packaging’s EMI SE while achieving good heat dissipation and mechanical protection. These advances pave the way for more reliable and safer electronic systems.

    • Lizhi Guan
    • Jingbo Fan
    • Hortense Le Ferrand
    ArticleOpen Access
  • A two-step spray coating process (first step: 20 cycles of spray coating at 110 °C with 40 s intervals; second step: 180 cycles of spray coating at 130 °C with 20 s intervals) was employed to a produce large-area, compact, and thick Cs3Bi2I9 perovskite film for the application of direct X-ray detectors. The fabricated device achieved a large active area of 150 mm2, a sensitivity of 127.23 μC Gyair−1 cm−2, a detection limit of 7.4 μGyairs−1, and durability after long-term X-ray pulse irradiation.

    • Yen-Ting Chen
    • Zi-Xiang Wen
    • Peter Chen
    ArticleOpen Access
  • Although atomically thin 2D materials have attracted great interest from their unique properties and promising applications, the integration of multiple 2D materials or their modifications are more exciting because they offer opportunities to explore new frontier of materials science. This perspective illustrates the new concept of “2.5-dimensional (2.5D) materials”, which symbolically represents the great potential offered by different routes to extend the realm of 2D materials. Some examples of 2.5D materials are reviewed, such as multicomponent heterostructures, intercalation, combination with other dimensional materials, functionalization, and application to 3D devices. In this perspective, we present the recent progress of this 2.5D materials research and future outlook.

    • Hiroki Ago
    • Pablo Solís-Fernández
    PerspectiveOpen Access
  • We report on conductive ultrathin films (referred to as “nanosheets”) with stretchability and water vapor permeability for skin-conformable bioelectrodes. By combining conductive fibrous networks of single-wall carbon nanotubes and poly(styrene-b-butadiene-b-styrene) continuous nanosheets (i.e., SWCNT-SBS nanosheets), the conductive nanosheet shows a high tolerance to bending on a model skin sheet and a high permeability to humidity. Finally, we demonstrate that the conductive nanosheet can detect the surface electromyogram signals from a subject’s forearm.

    • Tatsuhiro Horii
    • Kai Yamashita
    • Toshinori Fujie
    ArticleOpen Access
  • A pulsed laser created optical nanostructures (holograms) on hydrogel-based soft contact lenses. The nanostructures produced varying diffraction patterns in response to the environmental changes. Vision obstruction was considered while designing the nanostructure features on the lens surface. A change in curvature of the contact lens caused the nanostructure spacing to change, influencing the visible color of the hologram. A smartphone camera application was used to monitor the diffraction colors by analyzing the RGB color values.

    • Bader AlQattan
    • Mohamed Elsherif
    • Haider Butt
    ArticleOpen Access
  • Our investigation delves into the pulse-laser-induced emission of THz waves from a single layer of Co2MnGa thin film, emphasizing its notable anomalous Hall effect (AHE) stemming from its Weyl semimetallic characteristics. We establish robust correlations between THz emission, AHE, and the chemical structure of Co2MnGa thin films. Significantly, Co2MnGa films exhibit much larger THz emission compared to conventional CoFeB films. These findings introduce an innovative approach to designing spin-based THz emitters and promise to deepen our understanding of Weyl physics.

    • Ruma Mandal
    • Ren Momma
    • Shigemi Mizukami
    ArticleOpen Access
  • The world’s strongest iron-based superconducting magnet has been manufactured. Machine learning using Bayesian optimization was employed to improve the superconducting properties of potassium-doped barium iron arsenide (Ba,K)Fe2As2. Two large disk-shaped samples were fabricated using common industrial processing techniques under the best conditions deduced from data- and researcher-driven methods. After magnetizing the samples, they could retain a magnetic field of 2.83 T as a quasi-permanent magnet, around 2.7 times the previous record, with decay rates less than −0.1 ppm/h, crucial for MRI scanners. The two approaches produced divergent microstructures, opening the door to redefining what makes for a superior superconducting material.

    • Akiyasu Yamamoto
    • Shinnosuke Tokuta
    • Mark D. Ainslie
    ArticleOpen Access
Special issue on Hydrogels and Hydrogel-related Healing Materials

Hydrogels and Hydrogel-related Healing Materials

Hydrogels are of great interests from the viewpoints of their diverse applications such as disposal water adsorbent, tissue engineering, drug delivery, etc. New synthetic techniques as well as analytical methods have opened new gates to intelligent and advanced hydrogel-related materials. In combination with the broad term “healing”, the hydrogel-related materials have also been experiencing remarkable innovations. Some of the healing materials are designed for their own repair, others to assist the healing of the damaged bio-organisms. This special issue of NPG Asia Materials is focusing on the recent innovations related to hydrogels and hydrogel-related healing material, and presents state-of-the-art original articles as well as comprehensive reviews in this fast-growing field. Guest editor: Liping Wen, Chinese Academy of Science, China Submission Guideline: https://www.nature.com/documents/am-gta.pdf
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