Nature Communications
·
2020
·Vol. 11
·期 1
·1-7
·
IF 12.121
Chen Mao-Lin,Sun Xingdan,Liu Hang,Wang Hanwen,Zhu Qianbing,Wang Shasha,Du Haifeng,Dong Baojuan,Zhang Jing,Sun Yun,Qiu Song,Alava Thomas,Liu Song,Sun Dong-Ming,Han Zheng
Since its invention in the 1960s, one of the most significant evolutions of metal-oxide-semiconductor field effect transistors (MOS-FETs) would be the three dimensionalized version that makes the semiconducting channel vertically wrapped by conformal gate electrodes, also recognized as FinFET. During the past decades, the width of fin ( W \({}_{{\rm{fin}}}\) ) in FinFETs has shrunk from about 150 nm to a few nanometers. However, W \({}_{{\rm{fin}}}\) seems to have been levelling off in recent years, owing to the limitation of lithography precision. Here, we show that by adapting a template-growth method, different types of mono-layered two-dimensional crystals are isolated in a vertical manner. Based on this, FinFETs with one atomic layer fin are obtained, with on/off ratios reaching \(\sim\!\! 10^{7}\) . Our findings push the FinFET to the sub 1 nm fin-width limit, and may shed light on the next generation nanoelectronics for higher integration and lower power consumption.
研究领域:
半导体物理
·
纳米技术
✓ 已验证
DOI
PubMed
高影响因子
Nano Energy
·
2023
·
IF 17.6
Jingjie Wang,Weifeng Yang,Zhaoxu Liu,Yun Su,Kerui Li,Yaogang Li,Qinghong Zhang,Chengyi Hou,Hongzhi Wang
Fiber electronics discretely integrated into daily life is taking center stage for its enormous potentials for healthcare, physiological monitoring, and human-machine interfaces. However, the state-of-the-art fiber electronics are remarkably distinguished from generic fibers in diameter, stiffness, smoothness, and productivity. Here, we developed a universal scalable manufacturing process and generic fiber-like fine and soft self-powered interactive electronics with a diameter of only dozens of μm and a continuous length of hundreds of kilometers. These fiber electronics are prepared with a large-scale manufacturing speed (>20 m/min), and adapt to modern textile technology including weaving, knitting, sewing and embroidering. Moreover, Kawabata evaluation system for fabrics was systematically employed to analyze the fiber electronics enabled e-textile’s sensorial comfort, suggesting that adding the fiber electronics to fabric benefits its tactile sensations (e.g., softness, fluffy and fullness). Based on tribotronics, the interactive fiber electronics-based smart clothing demonstrates versatile applications including biomechanical energy harvesting , vital signal detecting, human motion recognizing and tactile sensing.
研究领域:
材料科学
·
生物医学工程
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 41
·2303847
·
IF 19
Su-Yun Zhang,Zhimin Mao,Duo Zhao,Chunmei Wang,Wei Tang,Yifei Xie,Chenxu Kang,Huawei Liang,Haoliang Liu,Yu-Jia Zeng
2D ferromagnetic semiconductors are key to next-generation spintronic devices in the post-Moore era. The combination of ferromagnetic and optoelectronic properties offers exciting opportunities for advanced multifunctional devices in spin-optoelectronic applications. Herein, the authors synthesize 2D van der Waals (vdW) Co x Sn 1- x S with ferromagnetism and photoresponse through a bottom-up reaction, which has a high yield compared to typical mechanical exfoliation. Ferromagnetic ordering is realized in 2D vdW semiconductor SnS by Co doping at the Sn sites. Magnetic properties are thoroughly studied at different doping concentrations, and first-principles calculations are further performed to reveal the magnetism origin and spin interactions. In particular, a low Gilbert damping of 1.69 × 10 −3 is obtained in vdW Co x Sn 1− x S through ferromagnetic resonance. In addition, photodetectors based on Co x Sn 1− x S quantum dots are demonstrated. These studies establish a promising semiconductor with both ferromagnetic ordering and photoelectric response, which provides unprecedented opportunities in spintronic-photonic integrated applications.
研究领域:
材料科学
·
凝聚态物理
·
半导体器件
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2023
·Vol. 107
·期 2
·968-978
·
IF 3.9
Qingkai Tang,Xinhua Zhu
Half-metallic ferromagnets (HMFs) are highly desirable materials for applications in spintronics because of their semiconducting behavior for one spin projection and metallic nature for the other. To operate spintronic devices at room temperature (RT), HMFs should simultaneously have a large saturation magnetization ( M S ), high magnetic Curie temperature ( T C ), and a wide half-metallic gap. However, HMFs that simultaneously fulfill these three criteria are rare. In this work, we report for the first time on the ferrimagnetic double perovskite oxides of Sr 2 CrHfO 6 (SCHO) with a magnetic T C up to 545 K due to the strong Cr 3+ (↑)Cr 4+ (↓) antiferromagnetic spin interactions. The combined experimental results confirmed that the SCHO powders crystallized in an orthogonal crystal structure with Pnma symmetry. The SEM images demonstrate that the powders exhibit a spherical morphology with particle sizes between 150 and 250 nm. XPS spectra verified the presence of Sr 2+ , Cr 3+ /Cr 4+ , and Hf 4+ /Hf x+ (x < 4) ions in the SCHO powder. Oxygen was present as lattice oxygen and adsorbed oxygen species. At 2 K, the SCHO powder exhibited ferrimagnetic behavior with M S of 0.11 μ B /f. u and a magnetic coercive field of 290 Oe. The SCHO ceramics displayed a normal butterfly-like magnetoresistance-magnetic field (MR-H) curve at 2 K due to the intergranular tunneling effect, and the MR (2 K, 7 T) value was −2.05%. The temperature dependence of the resistivity of the SCHO ceramics revealed their semiconducting nature, and the electrical transport data in the temperature range 2−800 K were well fitted by the Mott's variable-range hopping model, thermal activation model, and small polaron hopping model. Optical measurements demonstrate that the SCHO powders have a direct optical bandgap of 2.25 eV in the visible light window. Having both high T C and a direct optical bandgap (2.25 eV) makes SCHO oxides attractive for use in advanced spintronic devices and solar cells.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Physical Chemistry Letters
·
2022
·
IF 6.888
Xudong Li,Peixian Chen,Yong Xia,Ji Weng,Meijuan Chen,Tingchao He,Yiwen Li,Jiaji Cheng,Lei Zhang
Chiral tellurium nanoparticles have recently garnered tremendous attention as emerging inorganic nanomaterials with intrinsically chiral space groups owing to their potential in next-generation stereosynthesis, spintronics, and optoelectronics. Inspired by the chiral ligand-mediated synthetic strategy, we herein present hydrothermal-assisted synthesis of chiral polyhedral tellurium nanoparticles that provides differed chirogenesis than that of particles fabricated by wet chemistry in recent studies; the thiolated cysteine molecules change the morphology of tellurium nanoparticles from fundamental two-dimensional shapes to chiral three-dimensional polyhedra owing to the screw dislocation effects observed only during nanoparticle growth. However, the nanoparticles do not exhibit chiral behaviors at the nucleation stage. Further investigation indicates that the growth of chiral polyhedral tellurium nanoparticles is overwhelmingly affected by parameters such as the hydrothermal reaction time, amount of polyvinylpyrrolidone, and species of chiral molecules. We believe that these findings can provide new insights into the fundamental relationships among structural chirality, chiral ligands, screw dislocations, and chiral space groups in principle.
研究领域:
纳米材料
·
无机化学
·
材料科学
·
物理化学
·
手性
✓ 已验证
DOI
高影响因子
ADVANCED MATERIALS
·
2023
·Vol. 35
·期 20
·2210828
·
IF 29.4
Nan Wei,Liangcheng He,Changwei Wu,Dabiao Lu,Ruohan Li,Haiwen Shi,Haihui Lan,Yao Wen,Jun He,Youwen Long,Xiao Wang,Mengqi Zeng,Lei Fu
2D room-temperature magnetic materials are of great importance in future spintronic devices while only very few are reported. Herein, a plasma-enhanced chemical vapor deposition approach is exploited to construct the 2D room-temperature magnetic MnGa 4 -H single crystal with a thickness down to 2.2 nm. The employment of H 2 plasma makes hydrogen atoms can be easily inserted into the MnGa 4 lattice to modulate the atomic distance and charge state, thereby ferrimagnetism can be achieved without destroying the structural configuration. The as-obtained 2D MnGa 4 -H crystal is high-quality, air-stable, and thermo-stable, demonstrating robust and stable room-temperature magnetism with a high Curie temperature above 620 K. This work enriches the 2D room-temperature magnetic family and opens up the possibility for the development of spintronic devices based on 2D magnetic alloys.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
Science China-Materials
·
2023
·Vol. 66
·期 4
·1539-1550
·
IF 8.1
Zhan Weiqing,Zhang Haoqi,Lyu Xiaolin,Luo Zhong-Zhen,Yu Yan,Zou Zhigang
Ionogels have attracted much attention in recent years because of their good thermal stability, high ionic conductivity, and non-volatility. However, there is a trade-off between the mechanical strength and stretchability of ionogels, which results in unsatisfactory mechanical performance. Herein, strong polymer crystallization and weak ion-dipole interaction are combined to prepare an ultra-tough and super-stretchable ionogel. The crystalline region can dissipate the energy through the stress-induced disaggregation mechanism in the stretching process and toughen the gel, while the reversible formation and dissociation of the ion-dipole interaction between amorphous polymer chains and ionic liquids can provide elasticity for large strain. These ionogels have high toughness, strong tensile strength, large Young’s modulus, and good stretchability. Furthermore, the ionogels also possess other properties like good fatigue resistance, quick self-recovery, high transparency, recyclability, self-healing ability, high ionic conductivity, and wide electrochemical window. This ionogel exhibits great potential in several iontronic devices, such as triboelectric nanogenerators, ionic thermoelectric materials, and strain sensors. This study develops a new method to guide the preparation of high-performance ionogels by combining reversible strong and weak interactions.
研究领域:
材料科学
·
离子电子学
✓ 已验证
产品关联
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2023
·
IF 3.8
Muhammad Younis,Hao Wu,Li Yang,Luji Li,Hongda Li,Wenfeng Zhang,Haixin Chang
Most of topological crystalline insulators show no presence of intrinsic ferromagnetism at and above room temperature. Here, we report the Cr0.03Pb0.02Sn0.05Te0.1 ferromagnetic crystal prepared through the modified Bridgman route that possesses intrinsic above room-temperature ferromagnetism with Tc ∼335 K and magnetic moments ∼8.85 emu/g. The presence of the anomalous Hall effect in Cr0.03Pb0.02Sn0.05Te0.1 crystals verifies above room-temperature intrinsic ferromagnetism, indicating a great potential of the Cr0.03Pb0.02Sn0.05Te0.1 crystal for many spintronic and topological devices.
研究领域:
材料科学
·
凝聚态物理
✓ 已验证
产品关联
DOI
高影响因子
MACROMOLECULAR RAPID COMMUNICATIONS
·
2023
·
IF 4.6
Haiyang Liao,Jiayi Su,Jieling Han,Tieming Xiao,Xiao Sun,Guixin Cui,Xiaofei Duan,Pu Shi
Hydrogels are ideal materials for flexible electronic devices based on their smooth ion channels and considerable mechanical flexibility. A substantial volume of aqueous solution is required to enable the smooth flow of ions, resulting in the agony of low-temperature freezing; besides, long-term exposure to bending/tensile tress triggers fatigue issues. Therefore, it is a great challenge to prepare hydrogels with both freeze-resistance and long-term durability. Herein, a polyacrylic acid-based hydrogel with both hydrophobic interaction and dynamic reversible covalent bonding cross-linking networks is preparing (DC-hydrogel) by polymerizing a bi-functional imidazole-type ionic liquid monomer with integrated disulfide and alkene bonds (DS/DB-IL) and an octadecyl methacrylate, achieving self-healing. The DS/DB-IL anchored into the polymer backbone has a high affinity with water, reducing the freezing point of water, while the DS/DB-IL with free ions provides superior ionic conductivity to the DC-hydrogel. The polyacrylic acid with abundant carboxyl gives hydrogel good self-adhesiveness to different substrates. Ionotronics with resistance-type sensors with stable output performance are fabricated and explored its application to joint motion and health information. Moreover, hydrogel-based sensing arrays with high resolution and accuracy are fabricated to identify 2D distribution of stress. The hydrogels have great promise for various ionotronics in many fields.
研究领域:
材料科学
·
生物医学工程
·
传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano-Micro Letters
·
2022
·Vol. 14
·期 1
·1-14
·
IF 23.655
Wang Hai Lu,Guo Zi Hao,Pu Xiong,Wang Zhong Lin
An ultralight, ultrathin iontronic triboelectric mechanoreceptor (ITM) is proposed with high specific outputs for multi-functional epidermal applications.
Precise vital signals and physical activities monitoring of human bodies are noninvasively implemented by the ITM.
Acoustic-to-electrical energy conversion is realized by the ITM, and biometric applications such as voices differentiation and the noise dosimeter are demonstrated.
研究领域:
生物医学工程
·
材料科学
·
电子工程
✓ 已验证
DOI
PubMed
高影响因子
Journal of Materials Chemistry B
·
2020
·Vol. 8
·期 27
·5921-5927
·
IF 5.344
Jinfeng Cao,Yanhui Kang,Xiaoqing Wu,Chen He,Jinping Zhou
Hydrogel-based multifunctional materials have attracted much attention. In this work, novel mineralized hydrogels were fabricated through physically cross-linked polyvinylpyrrolidone (PVP) and CaCO3. The mineralized hydrogels were prepared by simply mixing CaCl2, Na2CO3, and PVP in aqueous solutions. The CO32− induced the aggregation of the PVP chains and the CaCO3 particles in situ generated in the aqueous solution worked as fillers to strengthen the hydrogels. Based on this method, other kinds of mineralized hydrogels were prepared by replacing the Ca2+ with different metal ions. The mineralized hydrogels displayed shapeable, self-healing and thixotropic properties. Moreover, the mineralized hydrogel-based sensor showed good and stable sensitivity to compressive pressure, and could be used to monitor human actions. This work presents a facile method for preparing mineralized hydrogels, which are promising for various applications due to their outstanding properties.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Science
·
2021
·Vol. 9
·期 2
·2102596
·
IF 16.806
Mengwei Liu,Yujia Zhang,Yanghong Zhang,Zhitao Zhou,Nan Qin,Tiger H. Tao
Progress toward intelligent human–robotic interactions requires monitoring sensors that are mechanically flexible, facile to implement, and able to harness recognition capability under harsh environments. Conventional sensing methods have been divided for human-side collection or robot-side feedback and are not designed with these criteria in mind. However, the iontronic polymer is an example of a general method that operates properly on both human skin (commonly known as skin electronics or iontronics) and the machine/robotic surface. Here, a unique iontronic composite (silk protein/glycerol/Ca(II) ion) and supportive molecular mechanism are developed to simultaneously achieve high conductivity (around 6 kΩ at 50 kHz), self-healing (within minutes), strong stretchability (around 1000%), high strain sensitivity and transparency, and universal adhesiveness across a broad working temperature range (−40–120 °C). Those merits facilitate the development of iontronic sensing and the implementation of damage-resilient robotic manipulation. Combined with a machine learning algorithm and specified data collection methods, the system is able to classify 1024 types of human and robot hand gestures under challenging scenarios and to offer excellent object recognition with an accuracy of 99.7%.
研究领域:
材料科学
·
机器人学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）