KZ
Authored
18 records found
From Short Circuit to Completed Circuit
Conductive Hydrogel Facilitating Oral Wound Healing
The primary challenges posed by oral mucosal diseases are their high incidence and the difficulty in managing symptoms. Inspired by the ability of bioelectricity to activate cells, accelerate metabolism, and enhance immunity, a conductive polyacrylamide/sodium alginate crosslinke
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Owing to the outstanding physical properties of graphene, its biosensing applications implemented by the terahertz metasurface are widely concerned and studied. Here, we present a novel design of the graphene metasurface, which consists of an individual graphene ring and an H-sha
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Reducing the thermal conductivity of thermoelectric materials has been a field of intense research to improve the efficiency of thermoelectric devices. One approach is to create a nanostructured thermoelectric material that has a low thermal conductivity due to its high number of
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Effects of temperature and grain size on diffusivity of aluminium
Electromigration experiment and molecular dynamic simulation
Understanding the atomic diffusion features in metallic material is significant to explain the diffusion-controlled physical processes. In this paper, using electromigration experiments and molecular dynamic (MD) simulations, we investigate the effects of grain size and temperatu
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Insights into the high-sulphur aging of sintered silver nanoparticles
An experimental and ReaxFF study
In high power electronics packaging, sintered silver nanoparticle joints suffer from thermal-humidity- electrical-chemical joint driven corrosion in extreme environments. In this paper, we conducted aging tests on sintered silver nanoparticles under high-temperature, high-humidit
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Luminous performances characterization of YAG
Ce3+ phosphor/silicone composites using both reflective and transmissive laser excitations
YAG: Ce3+ phosphor/silicone composites are widely used in solid-state lighting as a light converter to achieve white lighting. However, because of high thermal resistance and low thermal stability, the luminous performance of YAG: Ce3+ phosphor/silicone composite deteriorates rap
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Practical aspects of thermomechanical modeling in electronics packaging
A case study with a SiC power package
In this paper, we presented several practical aspects for building robust and reliable finite element models in thermomechanical modeling in electronics packaging using finite element analysis. Firstly, for layered or patterned structures, a homogenized equivalent model, with equ
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Coalescence kinetics and microstructure evolution of Cu nanoparticles sintering on substrates
A molecular dynamics study
Nano copper sintering technology has great potential to be widely applied in the wide-bandgap semiconductor packaging. In order to investigate the coalescence kinetics of copper nano particles for this application, a molecular dynamic (MD) simulation was carried out at low temper
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Sintering mechanism of Ag nanoparticle-nanoflake
A molecular dynamics simulation
This paper studied the behaviors of sintering between Ag nanoparticle (NP) and nanoflake (NF) in the same size by molecular dynamics simulation. Before the sintering simulation, the melting simulation of NF was carried out to calculate the melting points of NFs and investigate th
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Sulfur-Rich Ageing Mechanism of Silicone Encapsulant Used in LED Packaging
An Experimental and Molecular Dynamic Simulation Study
In a light-emitting diode (LED) package, silicone encapsulant serves as a chip protector and enables the light to transmit, since it exhibits the advantages of high light transmittance, high refractive index, and high thermal stability. However, its reliability is still challenge
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Board level vibration test method of components for automotive electronics
State-of-the-art approaches and challenges
Board level vibration testing is intended to assess prediction of the reliability of solder joint interconnects that are formed between electronic components and printed circuit boards (PCB). Frailties in the stress test experiment might lead to false board level reliability (BLR
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Advanced Composites Inspired by Biological Structures and Functions in Nature
Architecture Design, Strengthening Mechanisms, and Mechanical-Functional Responses
The natural design and coupling of biological structures are the root of realizing the high strength, toughness, and unique functional properties of biomaterials. Advanced architecture design is applied to many materials, including metal materials, inorganic nonmetallic materials
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The development of high-performance gas sensing materials is one of the development trends of new gas sensor technology. In this work, in order to predict the gas-sensitive characteristics of HfSe2 and its potential as a gas-sensitive material, the interactions of nonmetallic ele
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Coupling model of electromigration and experimental verification – Part I
Effect of atomic concentration gradient
This paper presented integrated electromigration (EM) studies through experiment, theory, and simulation. First, extensive EM tests were performed using Blech and standard wafer-level electromigration acceleration test (SWEAT)-like structures, which were fabricated on four-inch w
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Coupling model of electromigration and experimental verification – Part II
Impact of thermomigration
This paper presented a comprehensive experimental and simulation study for thermomigration (TM) accompanying electromigration (EM) at elevated current densities. Both Blech and standard wafer-level electromigration acceleration test (SWEAT)-like test structures, with aluminum (Al
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High temperature viscoplastic deformation behavior of sintered nanocopper paste used in power electronics packaging
Insights from constitutive and multi-scale modelling
As a promising technology for high-power and high-temperature power electronics packaging, nanocopper (nanoCu) paste sintering has recently received increasing attention as a die-attachment. The high-temperature deformation of sintered nanoCu paste and its underlying mechanisms c
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Review of Laser Sintering of Nanosilver Pastes for Die Attachment
Technologies and Trends
Nanosilver pastes have been regarded as the most promising die-attach materials for high-temperature and high-power applications due to their advantages such as excellent thermal conductivity, electrical conductivity, high temperature resistance, and good shear strength. However,
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Optoelectronic control of cardiac rhythm
Toward shock-free ambulatory cardioversion of atrial fibrillation
Atrial fibrillation (AF) is the most prevalent cardiac arrhythmia, progressive in nature, and known to have a negative impact on mortality, morbidity, and quality of life. Patients requiring acute termination of AF to restore sinus rhythm are subjected to electrical cardioversion
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Contributed
2 records found
Route towards power MOSFET large thin die mechanical robustness
Masters thesis report
Today’s cars are undergoing the greatest transformation the industry has seen. Power MOSFETs play a crucial role in making electronics more energy efficient by driving down switching losses and Rdson using a combination of next-generation trench technology and ultra-thin dies. Po
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Lab-on-a-chip for individual cell response to light stimulation
A three-layer MEMS device
Analyzing the different signaling pathways of cells is key in understanding the basic functions of the cells in all organic systems from algae to humans. Not only do they help solve our questions on how organisms function, they also allow for new cures to be explored. A large var
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