Results 91 to 100 of about 706,826 (277)

Efficient, Stable, and Low-Cost PbS Quantum Dot Solar Cells with Cr–Ag Electrodes

Nanomaterials, 2019
PbS quantum dots (QDs) are a promising nanostructured material for solar cells. However, limited works have been done to explore the active layer thickness, layer deposition techniques, stability improvement, and cost reduction for PbS QD solar cells. We
Jobeda J. Khanam, Simon Y. Foo, Zhibin Yu, Tianhan Liu, Pengsu Mao   +4 more
doaj   +1 more source

Development of supply-limited transport due to vertical sorting of a sand-gravel mixture [PDF]

, 2010
If a partially mobile sediment is transported an immobile sediment layer can form below the bedforms. This immobile layer can cause a supply-limitation, i.e. the volume of mobile sediment on top of the layer available for transport becomes limited.
Ribberink, J.S., Spekkers, M.H., Tuijnder, A.P.   +2 more
core   +2 more sources

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Prediction model for the initial period, active period, and decline period of surface movement in coal mining

Meitan xuebao
The duration of the initial, active, and declining periods of surface movement during coal mining is a key indicator for evaluating the stability of the surface, in response to the lack of theoretical prediction models for the duration of initial, active,
Liangliang ZHANG, Hua CHENG, Zhishu YAO, Xiaojian WANG   +3 more
doaj   +1 more source

On the distribution and swim pressure of run-and-tumble particles in confinement [PDF]

, 2015
The spatial and orientational distribution in a dilute active suspension of non-Brownian run-and-tumble spherical swimmers confined between two planar hard walls is calculated theoretically. Using a kinetic model based on coupled bulk/surface probability
Alonso-Matilla, Roberto, Ezhilan, Barath, Saintillan, David   +2 more
core   +1 more source

Threshold dependence on active-layer thickness in InGaAsP/InP d.h. lasers

Electronics Letters, 1978
Room-temperature threshold current density Jth against active-layer thickness d is reported for pulsed InGaAsP/InP double-heterostructure lasers operating at wavelengths near 1.23 μm. For d ≈ 1 μm, Jth/d is 5.0 kA cm−2 μm−1, whereas the lowest threshold is 1.6 kA cm−2 for d ≈ 0.2 μm.
R.E. Nahory, M.A. Pollack
openaire   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

Improving TFT Device Performance by Changing the Thickness of the LZTO/ZTO Dual Active Layer

Micromachines
The primary objective of this research paper is to explore strategies for enhancing the electrical performance of dual active layer thin film transistors (TFTs) utilizing LZTO/ZTO as the bilayer architecture.
Liang Guo, Suhao Wang, Xuefeng Chu, Chao Wang, Yaodan Chi, Xiaotian Yang   +5 more
doaj   +1 more source

Harnessing Fungal Biowelding for Constructing Mycelium‐Engineered Materials

Advanced Engineering Materials, EarlyView.
Mycelium‐bound composites (MBCs) offer low‐carbon alternatives for construction, yet interfacial bonding remains a critical challenge. This review examines fungal biowelding as a biocompatible adhesive, elucidating mycelium‐mediated interfacial mechanisms and their role in material assembly. Strategies to optimize biowelding are discussed, highlighting
Xue Brenda Bai, Xinrui Sarah Niu, Zhao Qin   +2 more
wiley   +1 more source

Plasmonic Light Trapping in an Ultrathin Photovoltaic Layer with Film-Coupled Metamaterial Structures

, 2015
A film-coupled metamaterial structure is numerically investigated for enhancing the light absorption in an ultrathin photovoltaic layer of crystalline gallium arsenide (GaAs).
Wang, Hao, Wang, Liping
core   +2 more sources