Results 131 to 140 of about 8,632,445 (288)

Correlation between positron annihilation lifetime and photoluminescence measurements for calcined Hydroxyapatite

open access: yesScientific Reports
Hydroxyapatite (HAp) Ca10(PO4)6(OH)2 is a compound that has stable chemical properties, composition, and an affinity for human bone. As a result, it can be used in odontology, cancer treatment, and orthopedic grafts to repair damaged bone.
Hoda Atta   +4 more
doaj   +1 more source

n‐Type Polymer Radio Frequency Rectifiers Operating at 18.5 GHz

open access: yesAdvanced Materials, EarlyView.
Combining an n‐doped polymer semiconductor with wafer‐scale asymmetric planar electrodes featuring work function‐engineered contacts yields radio‐frequency diodes and rectifying circuits operating at up to 18.5 GHz. The devices combine scalable manufacturing with an operating frequency previously unattainable by large‐area organic electronics ...
Lazaros Panagiotidis   +19 more
wiley   +1 more source

^|^zeta;-Potential of Polyvinyl Alcohol Fibers

open access: yesKobunshi Kagaku, 1958
ピニロンCのアンモニヤおよびエチレンジアミンによるアミノ化繊維, 熱処理PVA繊維のアミノアルデハイドジエチルアセタールによるアミノ化繊維のζ-電位を前報までにおいて述べた方法に準じて測定した。これらの繊維は一般に純水中で負の電位を示し, 相当量のHClを結合して電位は0となり, さらにHCl結合量, 水溶液中のHCl濃度が大となると正の電位を示す。しかし繊維のアミノ基含有率, 膨潤度によりHCl水溶液中のζ-電位は変化する。ビニロンCのアミノ化繊維は架橋結合のため膨潤度は小であるにかかわらず正の電位は小である。これらの結果は繊維の非晶部分に存在する解離電荷と吸着アニオンのζ-電位に及ぼす効果について以前の考察に従って理解される。
openaire   +2 more sources

Bioinspired Adaptive Surfaces for Intelligent Liquid Manipulation: Progressing From Passive and Active to Hybrid Strategies

open access: yesAdvanced Materials, EarlyView.
This review examines passive, active, and hybrid liquid manipulation strategies, highlighting hybrid approaches as an emerging route to reconcile energy efficiency with adaptive control. By actively reconstructing passive surfaces to store programmable interfacial energy, hybrid systems enable flexible yet low‐power liquid transport, with perspectives ...
Jiaqi Miao   +3 more
wiley   +1 more source

Transient Cytoskeletal Anisotropy Encodes Short‐Term Mechanical Memory in Glioblastoma Cells

open access: yesAdvanced Materials, EarlyView.
The same mechanical deformation can produce distinct cytoskeletal states depending on loading history. Experiments and constitutive modeling reveal that transient actin–vimentin anisotropy stores mechanical information and governs short‐term mechanical memory in glioblastoma cells.
Clara Gomez‐Cruz   +5 more
wiley   +1 more source

Results about fractional derivatives of Zeta functions [PDF]

open access: yes, 2017
Perhaps the most important function in all mathematics is the Riemann Zeta function. For almost 150 years Mathematicians have tried to understand the behavior of the function’s complex zeros.
Farr, Ricky E.   +1 more
core  

Confinement‐Induced Donnan Potential Enables Sealed Hydrovoltaic Power From Microliter Water

open access: yesAdvanced Materials, EarlyView.
An ultrathin MXene/cellulose nanofiber (CNF) nanochannel‐based hydrovoltaic generator produces sustained direct current (DC) from a single microliter droplet under sealed operation. Asymmetric nanochannel confinement establishes a persistent ion gradient and a confinement‐induced Donnan potential, harvesting the interfacial free energy released upon ...
Sangyun Na   +10 more
wiley   +1 more source

MJERENJE I PRIMJENA ZETA-POTENCIJALA

open access: yesRudarsko-geološko-naftni zbornik, 1992
Elektrokinetički ili zeta-potencijal važan je parametar dvojnog električnog sloja i predstavlja jednoznačnu karakteristiku električnih svojstava na kontaktu faza čvrsto-tekuće i tekuće-plinovito. U radu su opisane elektrokinetičke pojave koje pri tom kontaktu nastaju, kao i metode mjerenja potencijala. Prikazane su promjene vrijednosti zeta-potencijala
Filipović, Suzana   +2 more
openaire   +4 more sources

Ion Concentration and Voltage Imaging With Fluorescent Nanodiamonds

open access: yesAdvanced Materials, EarlyView.
We demonstrate reversible switching between the fluorescent NV0 and the dark NV+ state, in sub‐30 nm FNDs via surface oxidation and hydrogenation, respectively. In an electrochemical cell, we show that the fluorescence from hydrogenated particles enables all‐optical imaging of voltages and ion concentrations at the micrometer scale.
Patrick Voorhoeve   +8 more
wiley   +1 more source

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