A5027317911- Advanced Sensor and Energy Harvesting Materials
- Nanoporous metals and alloys
- Electrocatalysts for Energy Conversion
- Supercapacitor Materials and Fabrication
- Metamaterials and Metasurfaces Applications
- Advanced Materials and Mechanics
- Conducting polymers and applications
- Nonlocal and gradient elasticity in micro/nano structures
- Anodic Oxide Films and Nanostructures
- Plasmonic and Surface Plasmon Research
- Photonic Crystals and Applications
- Innovative Energy Harvesting Technologies
- Nanocluster Synthesis and Applications
- Advancements in Battery Materials
- Graphene research and applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Peroxisome Proliferator-Activated Receptors
- Thermal Radiation and Cooling Technologies
- Vibration Control and Rheological Fluids
- Mesoporous Materials and Catalysis
- Vibration and Dynamic Analysis
- Tactile and Sensory Interactions
- Nanomaterials and Printing Technologies
- Vitamin K Research Studies
- Advanced Battery Materials and Technologies
Beihang University
2015-2024
Gansu University of Traditional Chinese Medicine
2024
Xi'an Jiaotong University
2007-2019
Hamburg University of Technology
2011-2017
Universität Hamburg
2011-2017
Beijing Institute of Nanoenergy and Nanosystems
2014-2016
National Center for Nanoscience and Technology
2016
Chinese Academy of Sciences
2014-2016
Karlsruhe Institute of Technology
2010-2013
Shanghai Jiao Tong University
2011
All dielectric materials including ceramics, semiconductors, biomaterials, and polymers have the property of flexoelectricity, which opens a fertile avenue to sensing, actuation, energy harvesting by broad range materials. However, flexoelectricity solids is weak at macroscale. Here, we achieve an ultrahigh flexoelectric effect via composite foam based on PDMS CCTO nanoparticles. The mass- deformability-specific exceeds 10,000 times that solid matrix under compression, yielding...
The triboelectric nanogenerator (TENG) is a promising mechanical energy harvesting technology, but its pulsed output and the instability of input sources make associated energy‐storage devices necessary for real applications. In this work, feasible efficient charging Li‐ion batteries by rotating TENG with current demonstrated. In‐depth discussions are made on how to maximize power‐storage efficiency achieving an impedance match between battery appropriate design transformers. With...
Polymer-derived, monolithic three-dimensional nanographene (3D-NG) bulk material with tunable properties is produced by a simple and inexpensive approach. The mass-producible, combines chemical inertness mechanical strength hierarchical porous architecture graphene-like surface area. This provides an opportunity to control its electron transport dynamically means of electrochemical-induced interfacial electric fields.
Soft materials that can produce electrical energy under mechanical stimulus or deform significantly via moderate fields are important for applications ranging from soft robotics to biomedical science. Piezoelectricity, the property would ostensibly promise such a realization, is notably absent typical matter. Flexoelectricity an alternative form of electromechanical coupling universally exists in all dielectrics and generate electricity nonuniform deformation as flexure conversely,...
Silicon (Si) is a promising candidate as an anode material for lithium-ion batteries. However, its application hindered by poor cycling stability and rate-capability due to structural degradation, resulting from large volume changes during cyclic charging discharging. In this paper, we report that uniform-sized Si@void@C nanoparticles can be prepared magnesiothermic reduction of SiO2@void@C. Si are in hollow carbon shells with void space between the shell particles. Thus, each particle...
Abstract Compliant thermoelectric generators (TEGs) hold great promise in the field of self‐powered wearable electronics. Yet, low heat transfer efficiency arising from large thermal resistance between elastic encapsulating materials and contacted objects severely lowers thermopower. This issue is much more challenging for organic TEG ( o TEG) due to high parasitic loss whole polymer system. Herein, guided by finite element analyses, a polydimethylsiloxane based composite coated with Cu...
Electromagnetic protection materials are widely used in both military and civilian fields. However, the limited wave-absorbing band low transparency of conventional electromagnetic impediment for extensive applications. Here, a transparent electrically tunable metamaterial stealth technology has been theoretically experimentally realized. The trend absorption feature change simulation is consistent with that experiment results. main part this material adopts sandwich structure consisting two...
Impregnating the pores of nanoporous gold with aqueous electrolyte yields a hybrid nanomaterial two separate and interpenetrating charge transport paths, electronic conduction in metal ionic electrolyte. As paths are capacitively connected, space‐charge layers along internal interfaces coupled to electric potential differences between can be controlled or detected thereby. The present experiments show that space couples mechanical deformation material, so external loading generates an...
Abstract BACKGROUND: Doxorubicin (Adriamycin) is effective in gastric cancer treatment, but with severe dose‐dependent toxicities. A novel prodrug of doxorubicin (Ac‐Phe‐Lys‐PABC‐ADM) designed to deliver free relying on cathepsin B and reduce side effects. The authors examined the antitumor effect toxicities Ac‐Phe‐Lys‐PABC‐ADM against peritoneal carcinomatosis. METHODS: SGC‐7901 cell line was used for study. vitro study investigated effects growth dynamics cycle. vivo efficacy toxicity a...
We present an electrochemical study of carbon aerogel (CA) in aqueous sodium fluoride solutions, focusing on the comparison two quantities that are related to potential zero charge (pzc): capacitance minimum and 'electrocapillary maximum' surface forces. Capacitance minima well resolved our samples. Their emerges reproducibly as around 90 mV (vs. Ag/AgCl KCl), similar value, 70 mV, bulk glassy which we use for comparison, previous reported pzc values materials. Significantly, no...
Abstract A novel nanoporous carbon/electrolyte hybrid material is reported for use in actuation. The carbon matrix provides a 3D network that combines mechanical strength, light weight, and low cost with an extremely high surface area. In contrast to lower dimensional nanomaterials, the can be prepared form of macroscopic monolithic samples loaded compression. formed by infiltrating free internal pore volume electrolyte. Actuation prompted polarizing interfaces via applied electric bias. It...
Using optical in-situ measurements in an electrochemical environment, we study the tuning of transmission spectrum films from nanoporous gold (NPG) based metamaterial, including effect ligament size. The long wavelength part around 800 nm can be reversibly tuned via applied electrode potential. NPG behaves as diluted metal with its transition dielectric to metallic response shifted longer wavelengths. We find that potential alters charge carrier density a comparable extent experiments on...
The spectral properties of nanoporous gold are distinguished by two peaks in the transmission spectrum. Unlike earlier works, we do not attribute to separate localized plasmon resonances. Instead show that shape can be understood as diluted with a spectrally narrow dip arises from averaged electric field approaching zero. Thus, characteristics rather featured one broad curve than distinct peaks. Nanoporous is approximated effective medium model cubic grid wires.
We present an experimental study of the deformation nanoporous gold electrodes, wetted by aqueous electrolytes, subject to variation capillary forces at solid surface. The macroscopic dimensional change measured dilatometry and lattice parameter X-ray diffraction differ consistently a factor 2. apparent discrepancy points towards distinct difference between action surface stress as opposed Laplace pressure fluid in pore space. Whereas sorption strain porous solids is typically discussed...
Abstract We firstly designed an electrochemical system for dealloying to synthesize nanoporous gold (NPG) and also driving the novel NPG based actuator by utilizing a modified rotary triboelectric nanogenerator (TENG). Compared previous reported TENG whose outputs decline due temperature rising resulting from electrodes friction, with cooling has stable output current voltage increased 14% 20%, respectively. The cantilevered hybrid characterised light-weight (ca. 3 mg) small volume 30 mm × 2...
Thin gold split-ring resonators are exposed to an aqueous electrolyte. When varying the electrode potential by about 1 V, up 55-THz shifts of resonances centered at around 300 THz observed. By systematically electrode-potential window, reversible surface-charge effects can be separated from irreversible redistributions atoms.