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article

FE analysis of size effects in reinforced concrete beams without shear reinforcement based on stochastic elasto-plasticity with non-local softening

E. Syroka-Korol, J. Tejchman, Z. Mróz, E. Syroka-Korol, more

Finite Elements in Analysis & Design > 2014 > 88 > Complete > 25-41

The paper presents results of FE analysis of mechanical size effects in longitudinally reinforced concrete slender beams without shear reinforcement failing in shear mode. The simulations were performed under plane stress conditions for three beams of different sizes and a fixed shape (height/length ratio). The attention was focused on deterministic and statistical size effects related to the nominal...

article

Size Effects of Surface Roughness to Superhydrophobicity

Quanshui Zheng, Cunjing Lü, Q. Zheng, C. Lu

Procedia IUTAM > 2014 > 10 > Complete > 462-475

Water droplets placed on a superhydrophobic surface act like soft balls that can easily deform, roll and bounce, leading to various novel behaviors such as self-cleaning and anti-icing. Thousands of plant and animal species have been observed to have superhydrophobic surfaces and all these surfaces seem to have roughness sizes in the micro-submicron range. The classical models don not predict this...

article

Resurrecting the size effect: Evidence from a panel nonlinear cointegration model for the G7 stock markets

Nicholas Apergis, James E. Payne, N. Apergis, J.E. Payne

Review of Financial Economics > 2014 > 23 > 1 > 46-53

Firm size is known to be an important factor affecting stock returns. This study proposes a panel threshold cointegration model to investigate the impact of the size effect on stock returns for the panel of G7 countries: Canada, France, Germany, Italy, Japan, the U.K., and the U.S. over the period 1991:1–2012:12. The empirical analysis is based upon the nonlinear cointegration framework using the...

article

Size effect and inverse analysis in concrete fracture

J. Planas, G.V. Guinea, M. Elices

International Journal of Fracture > 1999 > 95 > 1-4 > 367-378

This paper summarizes the basic experimental and numerical results supporting an easy procedure to determine up to two fracture parameters based on numerically computed size effect curves. Furthermore, it supplies closed-form expressions to determine the initial linear segment approximation of the (stress vs. crack opening) softening curve of cohesive crack models for concrete, based only on the peak...

article

Grain‐Size‐Dependent Plastic Behavior in Bulk Nanocrystalline FeAl

Christoph Gammer, Clemens Mangler, Hans‐Peter Karnthaler, Christian Rentenberger

Advanced Engineering Materials > 26 > 19 > n/a - n/a

While the deformation behavior of nanocrystalline ductile metals and alloys is extensively studied, there is little understanding for brittle intermetallic alloys with very small grain sizes. Herein, B2‐ordered FeAl with different grain sizes is produced and deformed by high‐pressure torsion. At a grain size of 120 nm, conventional dislocation processes remain dominant, resulting in a disordered...

article

Synergy of Ni Nanoclusters and Single Atom Site: Size Effect on the Performance of Electrochemical CO₂ Reduction Reaction and Rechargeable Zn−CO₂ Batteries

Kanghua Miao, Jundi Qin, Jun Yang, Xiongwu Kang

Advanced Functional Materials > 34 > 33 > n/a - n/a

The design of bifunctional electrocatalysts toward reduction reaction of carbon dioxide (ECO₂RR) and oxygen evolution reaction (OER) in aqueous rechargeable Zn─CO₂ batteries (ZABs) still poses a significant challenge. Herein, Ni clusters (Ni_x) of 0.5 and 0.8 nm in diameter coupled with single Ni site (Ni−N₄−C), denoted as Ni−N₄/Ni₅ and Ni−N₄/Ni₈, respectively, are synthesized and the size effect of...

article

A size‐dependent energy‐based strain burst criterion

Rupesh Kumar Verma, Giang D. Nguyen, Murat Karakus, Abbas Taheri

International Journal for Numerical and Analytical Methods in Geomechanics > 48 > 12 > 3186 - 3209

This paper presents a size‐dependent energy‐based strain burst criterion linking strength, elasticity, fracture energies and specimen size effect with stress state due to changes in boundary conditions. It proposes the concept of a ‘Burst Envelope’, a surface in three‐dimensional principal stress space derived based on energy storing and dissipation characteristics of a rock sample, taking into account...

article

P‐140: The Miniaturization of InGaN/GaN Micro‐LEDs for Micro‐Displays – Size Effects, Frequency Dispersion and Compact Modeling

Yujia Gong, Liang Zhang, Pujian Lin, Ze Yuan, more

SID Symposium Digest of Technical Papers > 55 > 1 > 1928 - 1931

InGaN/GaN green micro‐light‐emitting diode (micro‐LED, μLED) arrays with varying device sizes down to 4 μm are fabricated and characterized. The size effects on current‐voltage and capacitance‐voltage characteristics are analyzed showing minimal sidewall effects only at low bias. The influence of pulse modulation frequency on luminance is also characterized and the effect of diode negative capacitance...

article

19‐1: Invited Paper: Development of INVAR alloy foil used in FMM

Ye Chao, Yan Dongchao, Wang Shu, Li Jun, more

SID Symposium Digest of Technical Papers > 55 > S1 > 161 - 167

According to different smelting processes, nonmetallic inclusions are divided into four grades: basic purity, industrial purity, high purity and ultra‐high purity to cope with the influence of inclusion size and quantity on INVAR foil. Smelting production was carried out according to different needs in OLED field. The concept of "extreme manufacturing" was inducted to design process. The...

article

Top‐Down Preparation and Magnetic Properties of MnSe₂ Nanoparticles

Lindong Liang, Jian Yu, Wenjie Xu, Shaoqiu Ke, more

physica status solidi (a) > 221 > 12 > n/a - n/a

Nanostructured transition metal dichalcogenide MnSe₂ has attracted much attention due to its fascinating magnetic properties. In this article, a series of MnSe₂ nanoparticles with different particle sizes are successfully prepared by a facile top‐down method of solid‐state reaction combined with ball milling, and the effects of ball milling on the phase composition, microstructure and magnetic properties...

article

Size Dependent Phase Transformation of Liquid Gallium

Jinyun Liu, Lijian Song, Zidong He, Shengding Wang, more

Small > 20 > 9 > n/a - n/a

As the most popular liquid metal (LM), gallium (Ga) and its alloys are emerging as functional materials due to their unique combination of fluidic and metallic properties near room temperature. As an important branch of utilizing LMs, micro‐ and submicron‐particles of Ga‐based LM are widely employed in wearable electronics, catalysis, energy, and biomedicine. Meanwhile, the phase transition is crucial...

article

Size Effect for Inhibiting Polysulfides Shuttle in Lithium‐Sulfur Batteries

Xiaoya Kang, Tianqi He, Rong Zou, Shengtao Niu, more

Small > 20 > 8 > n/a - n/a

It is undeniable that the dissolution of polysulfides is beneficial in speeding up the conversion rate of sulfur in electrochemical reactions. But it also brings the bothersome “shuttle effect”. Therefore, if polysulfides can be retained on the cathode side, the efficient utilization of the polysulfides can be guaranteed to achieve the excellent performance of lithium‐sulfur batteries. Based on this...

article

Nanodiamond‐Agarose Gels for Effective Photothermal Heating

Mai S. Rashwan, Harihara Baskaran, Clemens Burda

Advanced Functional Materials > 34 > 3 > n/a - n/a

Experimental investigation of the photothermal properties of carboxylated nanodiamond (ND) particles in agarose gel base medium over a range of very low particle concentrations from 6.55 × 10⁻⁵ to 2.29 × 10⁻²% v/v and two different sizes (35 and 160 nm) is carried out. Laser‐induced spot heating of gels with trace amounts of ND particles lead to a very large increase in temperatures away from the...

article

Multiscale formulation for saturated porous media preserving the representative volume element size objectivity

Anonis Reinaldo A., Mroginski Javier L., Sánchez Pablo J.

International Journal for Numerical Methods in Engineering > 125 > 3 > n/a - n/a

A multiscale model for saturated porous media is proposed, based on the concept of representative volume element (RVE). The physics between macro and micro‐scales is linked in terms of virtual power measures given by the general theory of poromechanics. Then, applying the so‐called Principle of Multiscale Virtual Power, together with suitable admissible constraints on micro‐scale displacement and...

article

Size effect of synthetic fibre reinforced concrete - investigation using a semi-discrete analytical beam model

Mária Erdélyiné Tóth, Anikó Pluzsik

Architecture Civil Engineering Environment > 2023 > Vol. 16, no. 3 > 117--129

The size effect is a well-known characteristic of concrete structures. However, in the case of fibre-reinforced concrete (FRC), this issue is not thoroughly explored. Most design recommendations of FRC neglect the size effect or handle the behaviour of FRC structures in case of different structural sizes similar to plain concrete structures (assuming FRC is a homogeneous material). The aim of this...

article

Size effect on dynamic compressive failure mode and mechanical properties of recycled concrete

Chunyang Liu, Yingqi Gao, Kaiye Luan, Jing Su, more

Structural Concrete > 24 > 5 > 6370 - 6391

In order to study the size effect behavior of recycled concrete under dynamic compression load, a meso‐scale model of recycled concrete was established. The particle size of coarse aggregate, replacement ratio of recycled coarse aggregate, and section size were used as parameters to explore the mechanical properties of recycled concrete under uniaxial dynamic compression load, such as failure mode,...

article

Investigation on crack extension resistance curve of aligned steel fiber‐reinforced cement‐based composites

Longbang Qing, Yuebo Zhang, Ru Mu, Jiaping Liu

Fatigue & Fracture of Engineering Materials & Structures > 46 > 10 > 3966 - 3981

In this study, an analytical method was proposed to predict the crack extension resistance curve (K_R curve) of aligned steel fiber‐reinforced cement‐based composites (ASFRC). The three‐point bending tests were carried out on notched ASFRC specimens. Based on the predicted results, the influence of size effect and fiber dosage on K_R curves of ASFRC specimens was discussed. Finally, the relationship...

article

P‐169: Late‐News Poster: How Display Size and Response time Affect flicker perception: Compare to flicker indices

Hyungsuk Hwang, Hyosun Kim, Youra Kim, Minkyung Kim, more

SID Symposium Digest of Technical Papers > 54 > 1 > 1708 - 1711

In this paper, the effect of visual angle and response time of display on flicker perception was studied. The influence of size effect and response time was observed using 30 Hz simulation image and two type of displays with fast and slow response time. Participants percived that the flicker became stronger as the size of the stimulus increased, but it was observed that there was no effect by response...

article

53‐1: Invited Paper: Enhanced Performance of III‐Nitride‐Based Light‐Emitting Diodes Through Novel Band Engineering and Fabrication Technology

Zhiyuan Liu, Yi Lu, Xiaohang Li

SID Symposium Digest of Technical Papers > 54 > 1 > 761 - 762

III‐Nitride‐based light‐emitting diodes (LEDs) are expected to be used in enormous and broad applications. In this paper, our novel band engineering and fabrication technologies are reviewed and discussed for pursuing higher device performance.

article

37‐2: Distinguished Paper: Efficiency Enhancement of Submicron‐size Light‐Emitting Diodes by Triple Dielectric Layers

Hyunmin Cho, Daehyun Kim, Seunga Lee, Chuljong Yoo, more

SID Symposium Digest of Technical Papers > 54 > 1 > 530 - 533

We demonstrate highly efficient submicron scale nanorod LEDs (nLEDs) passivated by the triple dielectric layers. The diameter, length, and wavelength at a peak EQE of nLEDs are 580nm, 5¼m, and 460nm, respectively. We report a peak EQE of 22.15 ± 0.34% with HfO2 based triple dielectric layer. We also explore the relation of indium‐fluctuation in multi quantum wells (MQWs) to sidewall effect of micro...

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Search results

FE analysis of size effects in reinforced concrete beams without shear reinforcement based on stochastic elasto-plasticity with non-local softening

Size Effects of Surface Roughness to Superhydrophobicity

Resurrecting the size effect: Evidence from a panel nonlinear cointegration model for the G7 stock markets

Size effect and inverse analysis in concrete fracture

Grain‐Size‐Dependent Plastic Behavior in Bulk Nanocrystalline FeAl

Synergy of Ni Nanoclusters and Single Atom Site: Size Effect on the Performance of Electrochemical CO₂ Reduction Reaction and Rechargeable Zn−CO₂ Batteries

A size‐dependent energy‐based strain burst criterion

P‐140: The Miniaturization of InGaN/GaN Micro‐LEDs for Micro‐Displays – Size Effects, Frequency Dispersion and Compact Modeling

19‐1: Invited Paper: Development of INVAR alloy foil used in FMM

Top‐Down Preparation and Magnetic Properties of MnSe₂ Nanoparticles

Size Dependent Phase Transformation of Liquid Gallium

Size Effect for Inhibiting Polysulfides Shuttle in Lithium‐Sulfur Batteries

Nanodiamond‐Agarose Gels for Effective Photothermal Heating

Multiscale formulation for saturated porous media preserving the representative volume element size objectivity

Size effect of synthetic fibre reinforced concrete - investigation using a semi-discrete analytical beam model

Size effect on dynamic compressive failure mode and mechanical properties of recycled concrete

Investigation on crack extension resistance curve of aligned steel fiber‐reinforced cement‐based composites

P‐169: Late‐News Poster: How Display Size and Response time Affect flicker perception: Compare to flicker indices

53‐1: Invited Paper: Enhanced Performance of III‐Nitride‐Based Light‐Emitting Diodes Through Novel Band Engineering and Fabrication Technology

37‐2: Distinguished Paper: Efficiency Enhancement of Submicron‐size Light‐Emitting Diodes by Triple Dielectric Layers

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