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Electronic skin (E‐skin) with multimodal sensing ability demonstrates huge prospects in object classification by intelligent robots. However, realizing the object classification capability of E‐skin faces severe challenges in multiple types of output signals. Herein, a hierarchical pressure–temperature bimodal sensing E‐skin based on all resistive output signals is developed for accurate object classification,...
Artificial Sensory Neural Network Systems
In article number 2301196, Chun Zhao, Xin Wang, and co‐workers develop an artificial sensory neural network system, combining digital‐analog bimodal memristor with piezoresistive tactile sensory array, to achieve tactile sensing, information storage, and neuromorphic computing, which would demonstrate potential in human‐machine interaction, prosthetics, and...
Memristor with digital and analog bipolar bimodal resistive switching offers a promising opportunity for the information‐processing component. However, it still remains a huge challenge that the memristor enables bimodal digital and analog types and fabrication of artificial sensory neural network system. Here, a proposed CsPbBr3‐based memristor demonstrates a high ON/OFF ratio (>103), long retention...
Efficient Perovskite Solar Modules
In article number 2301110, Sisi He, Longbin Qiu, and co‐workers design a controllable release and deposition of Ni2+ by adding amino‐alcohol ligands, which enhance the anti‐sedimentation of the precursor solution during chemical bath deposition and the uniformity of the deposited hole transport layer with large area. The authors fabricate highly reproducible and...
A scalable and low‐cost deposition of high‐quality charge transport layers and photoactive perovskite layers are the grand challenges for large‐area and efficient perovskite solar modules and tandem cells. An inverted structure with an inorganic hole transport layer is expected for long‐term stability. Among various hole transport materials, nickel oxide has been investigated for highly efficient...
Water Splitting
In article number 2208270, Lei Li, Li Song, and co‐workers provide a combined strategies of P‐Se binary vacancies and heterostructures to improve the hydrogen evolution performance of MoP/MoSe2‐H electrocatalysts, which present ultra‐low overpotential and is comparable to commercial Pt/C. A more efficient, safer and cheaper Zn‐H2O battery with MoP/MoSe2‐H as cathode is fabricated for...
It is not enough to develop an ideal hydrogen evolution reaction (HER) electrocatalysts by single strategy. Here, the HER performances are significantly improved by the combined strategies of P and Se binary vacancies and heterostructure engineering, which is rarely explored and remain unclear. As a result, the overpotentials of MoP/MoSe2‐H heterostructures rich in P and Se binary vacancies are 47...
Identifying and removing microplastics (MPs) from the environment is a global challenge. This study explores how the colloidal fraction of MPs assemble into distinct 2D patterns at aqueous interfaces of liquid crystal (LC) films with the goal of developing surface‐sensitive methods for identifying MPs. Polyethylene (PE) and polystyrene (PS) microparticles are measured to exhibit distinct aggregation...
The well‐defined 2D or 3D structure of covalent organic frameworks (COFs) makes it have great potential in photoelectric conversion and ions conduction fields. Herein, a new donor–accepter (D–A) COF material, named PyPz‐COF, constructed from electron donor 4,4′,4″,4′″‐(pyrene‐1,3,6,8‐tetrayl)tetraaniline and electron accepter 4,4′‐(pyrazine‐2,5‐diyl)dibenzaldehyde with an ordered and stable π‐conjugated...
The threshold voltage (Vth) adjustment of complementary metal‐oxide‐semiconductor (CMOS) thin film transistors (TFTs) is one of the research hotspots due to its key role in energy consumption control of CMOS circuits. Here, ultralow‐power flexible CMOS circuits based on well‐matched enhancement‐mode (E‐mode) CMOS single‐walled carbon nanotube (SWCNT) TFTs are successfully achieved through tuning the...
Enhancing the catalytic activity of Pt‐based alloy by a rational structural design is the key to addressing the sluggish kinetics of direct alcohol fuel cells. Herein, a facile one‐pot method is reported to synthesize PtCuRu nanoflowers (NFs). The synergetic effect among Pt, Cu, and Ru can lower the d‐band center of Pt, regulate the morphology, generate Ru‐rich edge, and allow the exposure of more...
Selective electrocatalytic nitrate‐to‐ammonia conversion holds significant potential in treatment of nitrate wastewater and simultaneously produces high‐value‐added ammonia. However, today's development of nitrate‐to‐ammonia technology remains hindered by the lack of electrocatalysts with high activity and selectivity. In this work, metal‐organic framework‐derived CuPd bimetallic nanoparticles/nitrogen‐doped...
The design of efficient and sustainable Pt‐based catalysts is the key to the development of direct methanol fuel cells. However, most Pt‐based catalysts still exhibit disadvantages including unsatisfied catalytic activity and serious CO poisoning in the methanol oxidation reaction (MOR). Herein, highly porous PtAg nanoflowers (NFs) with rich defects are synthesized by using liquid reduction combining...
Liquid crystal (LC) emulsions represent a class of confined soft matter that exhibit exotic internal organizations and size‐dependent properties, including responses to chemical and physical stimuli. Past studies have explored micrometer‐scale LC emulsion droplets but little is known about LC ordering within submicrometer‐sized droplets. This paper reports experiments and simulations that unmask the...
Although incorporating multiple halogen (bromine) anions and alkali (rubidium) cations can improve the open‐circuit voltage (Voc) of perovskite solar cells (PSCs), severe voltage loss and poor stability have remained pivotal limitations to their further commercialization. In this study, acetylcholine (ACh+) is anchored to the surface of a quadruple‐cation perovskite to provide additional electron...
Artificial synaptic devices have potential for overcoming the bottleneck of von Neumann architecture and building artificial brain‐like computers. Up to now, developing synaptic devices by utilizing biocompatible and biodegradable materials in electronic devices has been an interesting research direction due to the requirements of sustainable development. Here, a degradable photonic synaptic device...
In this paper, 2D borophene is synthesized through a liquid‐phase exfoliation. The morphology and structure of as‐prepared borophene are systemically analyzed, and the Z‐scan is used to measure the nonlinear optical properties. It is found that the saturable absorber (SA) properties of borophene make it serve as an excellent broadband optical switch, which is strongly used for mode‐locking in near‐...
It has long been demonstrated the gecko‐inspired micropillar array with T‐shape tips possesses the best adhesion performance of a given material. The further enhancement of the adhesion performances of T‐shape micropillars can offer redundant adhesion to compensate for the inevitable improper contacts. Here, the array of T‐shape polydimethylsiloxane (PDMS) micropillars is incorporated with gradient...
Artificial visual systems with image sensing and storage functions have considerable potential in the field of artificial intelligence. Light‐stimulated synaptic devices can be applied for neuromorphic computing to build artificial visual systems. Here, optoelectronic synaptic transistors based on 5,15‐(2‐hydroxyphenyl)‐10,20‐(4‐nitrophenyl)porphyrin (TPP) and dinaphtho[2,3‐b:2′,3′‐f ]thieno[3,2‐b...
Luminescence nanothermometry is promising for noninvasive probing of temperature in biological microenvironment at nanometric spatial resolution. Yet, wavelength‐ and temperature‐dependent absorption and scattering of tissues distort measured spectral profile, rendering conventional luminescence nanothermometers (ratiometric, intensity, band shape, or spectral shift) problematic for in vivo temperature...
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