Materials Literature
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Due to their unique architectures and outstanding electrical properties, three dimensional graphene‐based frameworks (3DGFs) have attracted extensive attention in wide fields. However, recently reported techniques always require complex processes and high cost, which severely limit their large‐scale application. In th…
Hydroxyapatite (HAP), similar to inorganic phase in bones, shows good biocompatibility and bioactivity as bone defect repairing material. Recently, nanoscaled HAP shows the special properties differing from bulk HAP in physics, chemistry and biology. This paper demonstrates that HAP nanoparticle (nHAP) possesses the a…
Small aldehyde molecule are demonstrated to induce cationic diphenylalanine to assemble into monodisperse enzyme‐responsive nanocarriers with high biocompatibility and excellent biodegradability. The formation of Schiff base covalent bond and accompanying π–π interaction of aromatic rings are found to be the mainly dr…
The exploration of the genetic information carried by DNA has become a major scientific challenge. Routine DNA analysis, such as PCR, still suffers from important intrinsic limitations. Surface-enhanced Raman spectroscopy (SERS) has emerged as an outstanding opportunity for the development of DNA analysis, but its app…
BACKGROUND: Biological effects of tailor-made multi-walled carbon nanotubes (MWCNTs) without functionalization were investigated in vivo in a two-year carcinogenicity study. In the past, intraperitoneal carcinogenicity studies in rats using biopersistent granular dusts had always been negative, whereas a number of suc…
Sericin, a major component of silk, has a long history of being discarded as a waste during silk processing. The value of sericin for tissue engineering is underestimated and its potential application in regenerative medicine has just begun to be explored. Here we report the successful fabrication and characterization…
Thermally reduced graphite oxide (TRGO), containing only four single carbon layers on average, was combined with ammonium polyphosphate (APP) and magnesium hydroxide (MH), respectively, in polypropylene (PP). The nanoparticle’s influence on different flame-retarding systems and possible synergisms in pyrolysis, reacti…
Theranostic nanoparticles hold the potential to revolutionize disease management. Over the last decade, there has been growing interest in the engineering of various kinds of theranostic nanoparticles for simultaneous cancer imaging and therapy in small animals. Efficient targeting of theranostic nanoparticles to the…
We demonstrate that monodispersed triangular gold nanoplates with high morphological yield (>90%) can be synthesized through a rapid one-pot seedless growth process. The edge length of triangular Au nanoplates can be readily tuned between 40 and 120 nm by varying the reaction parameters. Systematic studies reveal that…
Waste-heat recovery with thermoelectric power generators can improve energy efficiency and provide distributed electricity generation. New thermoelectric materials and material performance improvements motivate development of thermoelectric generators for numerous applications with excess exhaust and process heat. How…
Covalent organic frameworks (COFs) offer a strategy to position molecular semiconductors within a rigid network in a highly controlled and predictable manner. The π-stacked columns of layered two-dimensional COFs enable electronic interactions between the COF sheets, thereby providing a path for exciton and charge car…
Mechanism of crack propagation is done by loading the cycle against the perforated metal material will be difficult to avoid, to fatigue crack growth rate can be a way to expand its peg with the hole that normally uses metal balls as an alternative. By using a materials testing machine type cantilever bending eccentri…
This Ph. D thesis focuses on the development of new characterization techniques of dielectric and metallic materials in the ISM band (2.45 GHz). The first proposed method is based on non-destructive near field microave microscopy. This technique allows the determination of the electromagnetic properties (permittivity,…
The impact on marine algae Thalassiosiraweisflogii, Pseudo-nitzshiadelicatissima of copper sulfate, chloride of mercury, methylmercury were studied. Found sharp increase sensitivity FS 2 of microalgae cultures and natural phytoplankton to salts of heavy metals in the conditions of the light of the stress that is assoc…
背景:课题组前期开发的Ti O2-x Ny薄膜托槽具有优异的抗菌性能和生物安全性能。目的:考察Ti O2-x Ny薄膜托槽的表面摩擦性能。方法:采用射频磁控溅射制备Ti O2-x Ny薄膜托槽(0.022″),用X射线衍射、扫描电镜等方法表征托槽表面的理化性能。分别检测金属MBT直丝弓托槽、Ti O2-x Ny薄膜托槽与镍钛圆丝0.012、0.014、0.016间的最大静摩擦系数及动摩擦系数。结果与结论:Ti O2-x Ny薄膜托槽表面为锐钛矿结构特征峰,表面光洁均匀,致密且结晶度好。干燥状态下,Ti O2-x Ny薄膜托槽的最大静摩擦系数和动摩擦系数均小于金属MBT直丝弓托槽;湿润状态下,T...
Cette thèse porte sur le développement de nouvelles approches par marquage de spin suivi par spectroscopie RPE. Cette technique est bien adaptée pour suivre la dynamique structurale des protéines. Son principe repose sur l'insertion d'un radical nitroxyde, en un (ou plusieurs) site(s) choisi(s) d'une protéine et perme…
Les travaux de thèse sont axés sur le développement de nouvelles techniques de caractérisation basées sur la variation de la réponse d’un résonateur, réponse modifiée par les propriétés diélectriques ou métalliques d’un matériau sous test. La première méthode utilise la microscopie microonde en champ proche pour la ca…
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Esta tese apresenta um estudo da influência da morfologia (bulk e nanofibras) no comportamento da forma dopada (PANI-ES) e desdopada (PANI-EB) da polianilina (PANI) frente ao aquecimento e alta pressão, utilizando espectroscopia Raman e no infravermelho no monitoramento da resposta destes materiais. Outras técnicas, c…
Os aços inoxidáveis duplex se caracterizam por terem boas propriedades mecânicas e de resistência a corrosão, no entanto as suas propriedades de resistência ao desgaste são baixas. Para melhorar as propriedades superficiais desses materiais são utilizados tratamentos termoquímicos como a nitretação a plasma. Este trat…