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856 Results Found

  • Article
  • Open Access
10 Citations
2,517 Views
10 Pages

26 October 2021

Photo-excited charge carriers play a vital role in photocatalysts and photovoltaics, and their dynamic processes must be understood to improve their efficiencies by controlling them. The photo-excited charge carriers in photocatalytic materials are u...

  • Article
  • Open Access
4 Citations
3,373 Views
14 Pages

18 January 2022

A new evaluation method for preparing silica membranes by counter diffusion chemical vapor deposition (CVD) was proposed. This is the first attempt to provide new insights, such as the decomposition products, membrane selectivity, and precursor react...

  • Article
  • Open Access
2,382 Views
11 Pages

Effect of Light Irradiation on the Diffusion Rate of the Charge Carrier Hopping Mechanism in P3HT–ZnO Nanoparticles Studied by μ+SR

  • Eka Pratikna,
  • Lusi Safriani,
  • Nowo Riveli,
  • Budi Adiperdana,
  • Suci Winarsih,
  • Annisa Aprilia,
  • Dita Puspita Sari,
  • Isao Watanabe and
  • Risdiana Risdiana

16 October 2021

Blended regio-regular P3HT–ZnO nanoparticles are a hybrid material developed as an active layer for hybrid solar cells. The study of the hopping mechanisms and diffusion rates of regio-regular P3HT–ZnO nanoparticles is significant for obtaining intri...

  • Article
  • Open Access
9 Citations
6,895 Views
35 Pages

Profiling of Current Transients in Capacitor Type Diamond Sensors

  • Eugenijus Gaubas,
  • Tomas Ceponis,
  • Dovile Meskauskaite and
  • Nikolai Kazuchits

8 June 2015

The operational characteristics of capacitor-type detectors based on HPHT and CVD diamond have been investigated using perpendicular and parallel injection of carrier domain regimes. Simulations of the drift-diffusion current transients have been imp...

  • Article
  • Open Access
7 Citations
7,228 Views
20 Pages

31 July 2017

The currently used generalized Einstein relation for degenerate semiconductors with isotropic nonparabolic energy bands produces physically improper results, as well as losing numerical accuracy for large values of nonparabolicity parameters at room...

  • Article
  • Open Access
10 Citations
2,278 Views
12 Pages

Diffusion equations play a crucial role in various scientific and technological domains, including mathematical biology, physics, electrical engineering, and mathematics. This article presents a new formulation of the diffusion equation in the contex...

  • Article
  • Open Access
3 Citations
3,865 Views
19 Pages

26 January 2021

Amphiphilic copolymers containing polydimethylsiloxane (PDMS) and polyethylene glycol methyl ether (MPEG) were obtained via an azide-alkyne cycloaddition reaction between alkyne-functionalized copolymer of MPEG methacrylate and azide-functionalized P...

  • Article
  • Open Access
38 Citations
7,238 Views
12 Pages

20 July 2016

The long-term use of topical hydroquinone as an anti-hyperpigmentation treatment has well-known, unwanted effects. Deoxyarbutin (4-[(tetrahydro-2H-pyran-2-yl)oxy]phenol) is a relatively new tyrosinase inhibitor, with stronger inhibitory potency than...

  • Article
  • Open Access
6 Citations
2,394 Views
17 Pages

The non-invasive introduction of active substances into the human body is a top challenge for researchers in medicine, pharmacology, and cosmetology. Development of nanotechnology and possibilities of creating more and more complex drug carriers on a...

  • Article
  • Open Access
13 Citations
3,319 Views
21 Pages

8 January 2021

Heterogeneous chemical looping combustion (CLC) reactions and conjugate transports in large oxygen carrier particles were numerically investigated with computational fluid dynamics (CFD) approaches, in which a simplified noncatalytic reaction model w...

  • Article
  • Open Access
9 Citations
3,680 Views
10 Pages

Systematic Analysis of a Modified Uni-Traveling-Carrier Photodiode under High-Power Operating Conditions

  • Wanshu Xiong,
  • Zhangwan Peng,
  • Ruoyun Yao,
  • Qianwen Guo,
  • Chaodan Chi and
  • Chen Ji

We theoretically analyzed the detailed carrier transport process based on the drift-diffusion model in the InGaAs/InP modified Uni-Traveling-Carrier Photodiode (MUTC-PD) under high optical input power conditions. A high-speed MUTC-PD design was simul...

  • Article
  • Open Access
2 Citations
1,909 Views
17 Pages

Investigation of Nano-Heat-Transfer Variability of AlGaN/GaN-Heterostructure-Based High-Electron-Mobility Transistors

  • Haikel Mzoughi,
  • Faouzi Nasri,
  • Maha Almoneef,
  • Sonia Soltani,
  • Mohamed Mbarek and
  • Amenallah Guizani

29 December 2023

The aim of this work is to propose an electrothermal model for predicting the electron mobility, the effective thermal conductivity, and the operating temperature of AlGaN/GaN HEMT devices. The suggested model comprises an enhanced ballistic-diffusiv...

  • Article
  • Open Access
3 Citations
1,933 Views
28 Pages

Porphyrinic photosensitizers (PSs) and their nano-sized polymer-based carrier systems are required to exhibit low dark toxicity, avoid side effects, and ensure high in vivo tolerability. Yet, little is known about the intracellular fate of PSs during...

  • Article
  • Open Access
1 Citations
969 Views
12 Pages

Unveiling the Hydrogen Diffusion During Degradation of Silicon Solar Cells

  • MyeongSeob Sim,
  • Yejin Gu,
  • Donghwan Kim and
  • Yoonmook Kang

12 June 2025

We investigated monocrystalline passivated emitter rear contact cells for light- and elevated-temperature-induced degradation. Among the cell performance factors, a short current density results in a significant decrease in the short term. The quantu...

  • Review
  • Open Access
9 Citations
3,233 Views
28 Pages

The Scale Effects of Organometal Halide Perovskites

  • Yibo Zhang,
  • Zhenze Zhao,
  • Zhe Liu and
  • Aiwei Tang

13 November 2023

Organometal halide perovskites have achieved great success in solution-processed photovoltaics. The explorations quickly expanded into other optoelectronic applications, including light-emitting diodes, lasers, and photodetectors. An in-depth analysi...

  • Article
  • Open Access
2 Citations
2,857 Views
13 Pages

26 December 2022

Nanoparticles are presently considered the efficient carriers of medicals, cosmetics, and pharmaceuticals in the human organism. There is a lot of research carried out on the delivery of these materials in a non-invasive way. Such a method is very sa...

  • Article
  • Open Access
1 Citations
3,774 Views
10 Pages

21 December 2022

Arc brazing is an alternative joining technology well-suited for processing thermally sensitive materials and to produce mixed material connections. Due to the technological similarities of gas metal arc brazing to gas metal arc welding, it can be as...

  • Review
  • Open Access
11 Citations
11,870 Views
28 Pages

10 February 2012

The existence of a mitochondrial interactosome (MI) has been currently well established in mammalian cells but the exact composition of this super-complex is not precisely known, and its organization seems to be different from that in yeast. One majo...

  • Article
  • Open Access
3 Citations
3,180 Views
17 Pages

26 October 2021

This paper presents a minimum signal model via the AC small-signal model and the uncertainty principle, which reveals the minimum AC signal that can be amplified by a bipolar transistor. The Ebers—Moll model (EM3) can describe the small signal amplif...

  • Review
  • Open Access
9 Citations
8,148 Views
23 Pages

The Mechanism and Latest Research Progress of Blood–Brain Barrier Breakthrough

  • Fei Wang,
  • Liujie Qi,
  • Zhongna Zhang,
  • Huimin Duan,
  • Yanchao Wang,
  • Kun Zhang and
  • Jingan Li

The bloodstream and the central nervous system (CNS) are separated by the blood–brain barrier (BBB), an intricate network of blood vessels. Its main role is to regulate the environment within the brain. The primary obstacle for drugs to enter t...

  • Article
  • Open Access
7 Citations
3,764 Views
9 Pages

Several studies on amorphous oxide semiconductor thin-film transistors (TFTs) applicable to next-generation display devices have been conducted. To improve the poor switching characteristics and gate bias stability of co-sputtered aluminum–indi...

  • Article
  • Open Access
1 Citations
1,472 Views
15 Pages

22 February 2025

The HCI effect has been the focus of research as a common reliability consideration under advanced nodes in semiconductors. In this paper, a new compact model that takes into account the self-heating effect, width dependence, and substrate voltage de...

  • Feature Paper
  • Article
  • Open Access
10 Citations
2,693 Views
12 Pages

Polarons in Rock-Forming Minerals: Physical Implications

  • Boriana Mihailova,
  • Giancarlo Della Ventura,
  • Naemi Waeselmann,
  • Simone Bernardini,
  • Wei Xu and
  • Augusto Marcelli

The existence of thermally-activated quasiparticles in amphiboles is an important issue, as amphiboles are among the main hydrous complex silicate minerals in the Earth’s lithosphere. The amphibole structure consists of stripes of 6-membered TO...

  • Communication
  • Open Access
2 Citations
2,934 Views
8 Pages

7 March 2023

This study analyzed the recovery of channel potential according to the program states of adjacent cells. When the verify operation ended, and all voltages dropped to 0 V and the decreased potential of the floating channel caused by the down-coupling...

  • Article
  • Open Access
3 Citations
2,129 Views
12 Pages

28 June 2023

The use of a controlled-release drug carrier is an innovative solution for the treatment of local infections, in particular in dentistry, skin diseases, and in open wounds. The biocompatibility, biodegradability, the possibility of a large amount of...

  • Review
  • Open Access
403 Citations
18,215 Views
45 Pages

Mathematical Modeling of Release Kinetics from Supramolecular Drug Delivery Systems

  • Constantin Mircioiu,
  • Victor Voicu,
  • Valentina Anuta,
  • Andra Tudose,
  • Christian Celia,
  • Donatella Paolino,
  • Massimo Fresta,
  • Roxana Sandulovici and
  • Ion Mircioiu

Embedding of active substances in supramolecular systems has as the main goal to ensure the controlled release of the active ingredients. Whatever the final architecture or entrapment mechanism, modeling of release is challenging due to the moving bo...

  • Proceeding Paper
  • Open Access
1 Citations
1,939 Views
4 Pages

Restraining the Diffusion of Photocarriers to Improve the Spatial Resolution of the Chemical Imaging Sensor

  • Ko-ichiro Miyamoto,
  • Takeyuki Suto,
  • Carl Frederik Werner,
  • Torsten Wagner,
  • Michael J. Schöning and
  • Tatsuo Yoshinobu

The chemical imaging sensor is capable of visualizing the ion distribution. The spatial resolution of the chemical image depends on the horizontal diffusion of photocarriers generated by illumination. In this study; a novel optics is designed to real...

  • Article
  • Open Access
11 Citations
4,914 Views
18 Pages

30 November 2020

Amphiphilic copolymers of alkyne functionalized 2-hydroxyethyl methacrylate (AlHEMA) and poly(ethylene glycol) methyl ether methacrylate (MPEGMA) with graft or V-shaped graft topologies were synthesized. The functionalization of poly(ε-caprol...

  • Feature Paper
  • Review
  • Open Access
6 Citations
3,668 Views
25 Pages

The influence of various energetic particles and electron injection on the transport of minority carriers and non-equilibrium carrier recombination in Ga2O3 is summarized in this review. In Ga2O3 semiconductors, if robust p-type material and bipolar...

  • Review
  • Open Access
11 Citations
4,157 Views
10 Pages

17 December 2018

The goal of this work was to comprehensive study the transport properties of controlled-release systems for the safe and reliable delivery of drugs. Special emphasis has been placed on the measurement of the diffusion of drugs, alone or in combinatio...

  • Article
  • Open Access
8 Citations
3,324 Views
16 Pages

Performance Evaluation of a Chinese Lean Iron Ore as the Oxygen Carrier in Multi and Short-Time Redox Cycles

  • Xudong Wang,
  • Xiaojia Wang,
  • Xiaoyu Hu,
  • Yali Shao,
  • Zhaoyang Jin and
  • Baosheng Jin

27 April 2018

The performance of a Chinese lean iron ore as the oxygen carrier in chemical looping combustion was investigated in a fixed bed reactor. Considering the short contact time between the fuel gas and oxygen carrier in the sub-pilot experimental setup, t...

  • Article
  • Open Access
3 Citations
1,595 Views
22 Pages

Dynamics of Photoinduced Charge Carrier and Photothermal Effect in Pulse-Illuminated Narrow Gap and Moderate Doped Semiconductors

  • Slobodanka Galovic,
  • Katarina Djordjevic,
  • Milica Dragas,
  • Dejan Milicevic and
  • Edin Suljovrujic

14 January 2025

When a sample of semiconducting material is illuminated by monochromatic light, in which the photon energy is higher than the energy gap of the semiconductor, part of the absorbed electromagnetic energy is spent on the generation of pairs of quasi-fr...

  • Article
  • Open Access
4 Citations
2,224 Views
14 Pages

1 February 2023

An investigation of chromium(VI) transport across a supported liquid membrane containing the phosphine oxides Cyanex 921 and Cyanex 923 dissolved in Solvesso 100 as carrier phases was carried out in batch operation mode. Chromium(VI) transport was in...

  • Article
  • Open Access
4 Citations
2,893 Views
21 Pages

11 January 2023

The effect of thermally generated equilibrium carrier distribution on the vacancy generation, recombination, and mobility in a semiconductor heterostructure with an undoped quantum well is studied. A different rate of thermally generated equilibrium...

  • Article
  • Open Access
5 Citations
3,350 Views
13 Pages

Influence of P3HT:PCBM Ratio on Thermal and Transport Properties of Bulk Heterojunction Solar Cells

  • Dorota Korte,
  • Egon Pavlica,
  • Domen Klančar,
  • Gvido Bratina,
  • Michal Pawlak,
  • Ewa Gondek,
  • Peng Song,
  • Junyan Liu and
  • Beata Derkowska-Zielinska

9 January 2023

The influence of P3HT:PCBM ratio on thermal and transport properties of solar cells were determined by photothermal beam deflection spectrometry, which is advantageous tool for non-destructively study of bulk heterojunction layers of organic solar ce...

  • Article
  • Open Access
3 Citations
3,027 Views
13 Pages

Case Series of 11 CDH1 Families (47 Carriers) Including Incidental Findings, Signet Ring Cell Colon Cancer and Review of the Literature

  • Mathis Lepage,
  • Nancy Uhrhammer,
  • Maud Privat,
  • Flora Ponelle-Chachuat,
  • Myriam Kossai,
  • Julien Scanzi,
  • Zangbéwendé Guy Ouedraogo,
  • Mathilde Gay-Bellile,
  • Yannick Bidet and
  • Mathias Cavaillé

25 August 2023

Germline pathogenic variants in E-cadherin (CDH1) confer high risk of developing lobular breast cancer and diffuse gastric cancer (DGC). The cumulative risk of DGC in CDH1 carriers has been recently reassessed (from 40–83% by age 80 to 25&ndash...

  • Article
  • Open Access
1 Citations
1,451 Views
18 Pages

Connection Failure: Differences in White Matter Microstructure Are Associated with 5-HTTLPR but Not with Risk Seeking for Losses

  • Philipp T. Neukam,
  • Dirk K. Müller,
  • Yacila I. Deza-Lougovski,
  • Shakoor Pooseh,
  • Stephanie H. Witt,
  • Marcella Rietschel and
  • Michael N. Smolka

S/S carriers of 5-HTTLPR have been found to be more risk seeking for losses compared to L/L carriers. This finding may be the result of reduced top-down control from the frontal cortex due to altered signal pathways involving the amygdala and ventral...

  • Article
  • Open Access
12 Citations
5,832 Views
45 Pages

Simulations of Operation Dynamics of Different Type GaN Particle Sensors

  • Eugenijus Gaubas,
  • Tomas Ceponis,
  • Vidas Kalesinskas,
  • Jevgenij Pavlov and
  • Juozas Vysniauskas

5 March 2015

The operation dynamics of the capacitor-type and PIN diode type detectors based on GaN have been simulated using the dynamic and drift-diffusion models. The drift-diffusion current simulations have been implemented by employing the software package S...

  • Article
  • Open Access
2 Citations
2,763 Views
11 Pages

Impact of Solid-State Charge Injection on Spectral Photoresponse of NiO/Ga2O3 p–n Heterojunction

  • Alfons Schulte,
  • Sushrut Modak,
  • Yander Landa,
  • Atman Atman,
  • Jian-Sian Li,
  • Chao-Ching Chiang,
  • Fan Ren,
  • Stephen J. Pearton and
  • Leonid Chernyak

Forward bias hole injection from 10-nm-thick p-type nickel oxide layers into 10-μm-thick n-type gallium oxide in a vertical NiO/Ga2O3 p–n heterojunction leads to enhancement of photoresponse of more than a factor of 2 when measured from this...

  • Article
  • Open Access
3 Citations
1,807 Views
10 Pages

29 July 2024

The effects of surface recombination on the steady-state carrier profiles and photocurrent in perovskite solar cells are investigated in this paper. The continuity equations for both holes and electrons are solved considering carrier drift and diffus...

  • Article
  • Open Access
5 Citations
2,329 Views
15 Pages

23 December 2022

A study of indium(III) transport across an immobilized liquid membrane using the pseudo-protic ionic liquids TOAH+Cl and TODAH+Cl as carriers has been carried out using batch experiments. Metal transport is investigated as a function of...

  • Article
  • Open Access
3,930 Views
12 Pages

9 September 2015

The asymptotic procedure proposed allows to derive closed hydrodynamical equations from the kinetic equations of carriers and phonons (treated as a partecipating species) in a photon background. The direct generation-recombination processes are accou...

  • Article
  • Open Access
3 Citations
4,101 Views
6 Pages

Determination of Diffusion Coefficient of Copper in ZnO (001) Single Crystals at 1000 °C

  • Primavera López-Salazar,
  • Gabriel Juárez-Díaz,
  • Javier Martínez-Juárez,
  • José A. Luna-López,
  • Ramón Peña Sierra,
  • Yuri Koudriavtsev,
  • Carlos Palomino-Jiménez and
  • Angel. P. Rodríguez-Victoria

6 March 2019

Copper from a solid source was diffused into undoped n-type bulk ZnO (001) single crystals at 1000 °C under a nitrogen atmosphere at different diffusion times. The Cu diffusion profiles were obtained by Secondary ion mass spectroscopy (SIMS), and...

  • Article
  • Open Access
3 Citations
2,745 Views
8 Pages

Charge Carrier Transport Behavior and Dielectric Properties of BaF2:Tb3+ Nanocrystals

  • Xiaoyan Cui,
  • Tingjing Hu,
  • Huangyu Wu,
  • Junkai Zhang,
  • Lihua Yang,
  • Xin Zhong,
  • Xiaoxin Wu,
  • Jingshu Wang,
  • Xuefei Li and
  • Chunxiao Gao
  • + 1 author

16 January 2020

The charge carrier behavior and dielectric properties of BaF2:Tb3+ nanocrystals have been studied by alternating current (AC) impedance spectroscopy. The electron and ion coexist in the transport process. The F ion’s contribution to the...

  • Article
  • Open Access
5 Citations
2,501 Views
16 Pages

24 April 2023

The chemical looping oxidative dehydrogenation of propane to propylene (CL-ODHP) replaces molecular oxygen with lattice oxygen (Olatt) in oxygen carriers. This method boosts propylene selectivity by avoiding the deep oxidation of propane. Herein, a s...

  • Article
  • Open Access
3 Citations
3,116 Views
12 Pages

Modeling Hydrodynamic Charge Transport in Graphene

  • Arif Can Gungor,
  • Stefan M. Koepfli,
  • Michael Baumann,
  • Hande Ibili,
  • Jasmin Smajic and
  • Juerg Leuthold

10 June 2022

Graphene has exceptional electronic properties, such as zero band gap, massless carriers, and high mobility. These exotic carrier properties enable the design and development of unique graphene devices. However, traditional semiconductor solvers base...

  • Article
  • Open Access
16 Citations
4,322 Views
12 Pages

Feasibility of Adsorption Kinetic Models to Study Carrier-Mediated Transport of Heavy Metal Ions in Emulsion Liquid Membranes

  • Gerardo León,
  • Elisa Gómez,
  • Beatriz Miguel,
  • Asunción María Hidalgo,
  • María Gómez,
  • María Dolores Murcia and
  • María Amelia Guzmán

Emulsion liquid membranes have been successfully used for the removal of different types of organic and inorganic pollutants by means of carrier-mediated transport mechanisms. However, the models that describe the kinetics and transport of such mecha...

  • Article
  • Open Access
3 Citations
1,627 Views
15 Pages

The rapid development of nanotechnology has offered the possibility of creating nanosystems that can be used as drug carriers. The use of such carriers offers real opportunities for the development of non-invasive drug delivery through skin structure...

  • Article
  • Open Access
1 Citations
2,580 Views
13 Pages

23 November 2021

Ionic transport and ion sieving are important in the field of separation science and engineering. Based on the rapid development of nanomaterials and nano-devices, more and more phenomena occur on the nanoscale devices in the field of thermology, opt...

  • Article
  • Open Access
40 Citations
6,319 Views
11 Pages

Nanostructured Lipid Carrier Gel for the Dermal Application of Lidocaine: Comparison of Skin Penetration Testing Methods

  • Stella Zsikó,
  • Kendra Cutcher,
  • Anita Kovács,
  • Mária Budai-Szűcs,
  • Attila Gácsi,
  • Gabriella Baki,
  • Erzsébet Csányi and
  • Szilvia Berkó

The aim of this research was to investigate the stability of a lidocaine-loaded nanostructured lipid carrier dispersion at different temperatures, formulate a nanostructured lipid carrier gel, and test the penetration profile of lidocaine from the na...

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