Abstract Temperature distributions in 3-D integrated circuits (ICs) are analyzed with a test structure, which has a top-tier chip attached on a bottom dummy chip with adhesive layer. The devices with four kinds of top-tier chip thickness tSi of 50–410 μm were fabricated by a standard 0.18 μm CMOS process. The test structure consists of 24 sensor blocks, each of which has sensor p-n diodes…
Abstract To address the need for direct extraction of the capacitance of a chip, a capacitance measurement array (CMA) has been developed. The operation of the CMA is based on the charge-based capacitance measurement (CBCM) technique. The CMA chip consists of 144 CBCM array units (CAU) and each CAU is designed to measure eight individual capacitors. Element selection and precise measurement ar…
Abstract “Stealth dicing (SD)” was developed to solve inherent problems of a dicing process such as debris contaminants and unnecessary thermal damages on a work wafer. A completely dry process is another big advantage over other dicing methods. In SD, the laser beam power of transmissible wavelength is absorbed only around focal point in the wafer by utilizing the temperature dependence o…
Abstract In semiconductor manufacturing processes, monitoring the quality of wafers is one of the most important steps to quickly detect process faults and significantly reduce yield loss. Fail bit maps (FBMs) represent the failed cell count during wafer functional tests and have been popularly used as one of the diagnosis tools in semiconductor manufacturing for process monitoring, root caus…
Abstract It is well known that the chemical reaction between an oxide layer and a water-based slurry produces a softer hydroxylated interface layer. During chemical–mechanical polishing (CMP), it is assumed that material removal occurs by the plastic deformation of this interface layer. In this paper, the behavior of the hydroxylated layer is modeled as a perfectly plastic material, and a me…
Abstract The introduction of 3-D structures and new materials for advanced logic devices at extremely fine feature size presents challenges for within-wafer and wafer-to-wafer thickness uniformity control that is critical for yield and performance. For conventional chemical mechanical polishing technology, the typical thin film uniformity across the whole wafer may not meet the desired variat…
Abstract Limited endurance of E/W cycles is a unique restriction of flash memories and the endurance characteristics usually take a longer time to test. In this paper, we proposed a novel endurance test scheme that takes advantage of the parasitic cell-to-cell interference as well as a shortened program time to accelerate the endurance test for terabit NAND flash memory. The novelty of the ne…
Abstract Characterizing positive charges and its energy distribution in gate dielectric is useful for process qualification. A discharge-based technique is introduced to extract their energy distribution both within and beyond substrate band-gap. This paper investigates the difficulties in its implementation on typical industrial parameter analyzer and provides solutions. For the first time, w…
Abstract An addressable array test structure is proposed for characterization of transistor variability beyond 3σ away from the mean. The design of the array is based on very compact basic cells which enable a highly efficient layout which has over three times higher normalized device density than similar arrays. Implementations of a 32k array are demonstrated for placement in a standard waf…
The economic impact of seedborne bacterial diseases on rice production provides a major motivation for research on seed health. This paper reports on the endophytic growth of a rifampicin-marked strain of the seedborne rice pathogen Pseudomonas fuscovaginae. The bacterium was found in most tested seeds indicating that, even without visible discolouration, seed transmission is possible. Crushed …
Abstract For species that are increasingly threatened by the combined impacts of habitat loss and climate change, the identification of priority regions for conservation planning efforts is urgently required. In the case of specialist folivores, consideration of the effects of climate change on the distributions of their essential food resources should be a key component of conservation planni…
For the first time, morpho-anatomical characters that were congruent with DNA sequence data were used to characterize several genera in Hapalidiaceae —the major eco-engineers of Subarctic carbonate ecosystems. DNA sequencing of three genes (SSU, rbcL, ribulose-1, 5-bisphosphate carboxylase/ oxygenase large subunit gene and psbA, photosystem II D1 protein gene), along with patterns of cell …
Conservation planning has historically been restricted to planning within single realms (i.e., marine, terrestrial, or freshwater). Recently progress has been made in approaches for cross-realm planning which may enhance the ability to effectively manage processes that sustain biodiversity and ecosystem functions (e.g., connectivity) and thus minimize threats more efficiently. Current advances…
The heterogeneity in the healthy human immune system, and the immunological changes that portend various diseases, have been only partially described. Their comprehensive elucidation has been termed the ‘Human Immunology Project’. The accurate measurement of variations in the human immune system requires precise and standardized assays to distinguish true biological changes from technical a…
Abstract Many multicast services such as live multimedia distribution and real-time event monitoring require multicast mechanisms that involve network functions (e.g., firewall and video transcoding). Network function virtualization (NFV) is a concept that proposes using virtualization to implement network functions on infrastructure building block (such as high volume servers and virtual mac…
Abstract Aim: To describe the main vegetation types of the Korean zonal forests and explore their relationship with the main environmental and geographic gradients. Location: Korean Peninsula. Methods: A data set of 3847 releves of zonal (semi)natural forest stands, together with environmental factors recorded in the field or derived from interpolated climatic data was collected. Using the…
Abstract Recent studies have shown that the energy consumption of wireless access networks is a threat to the sustainability of mobile cloud services. Consequently, energy efficient solutions are becoming crucial for both local and wireless access networks. In this paper, we propose a flow-based management framework to achieve energy efficiency in campus networks. We address the problem from …
Abstract Service-oriented computing and Web services are becoming more and more popular, enabling organizations to use the Web as a market for selling their own Web services and consuming existing Web services from others. Nevertheless, with the increasing adoption and presence of Web services, it becomes more difficult to find the most appropriate Web service that satisfies both users’ func…
Abstract Large-scale data centers are the key infrastructures for hosting and running a variety of applications. Besides traditional L2/L3 devices, middleboxes are widely deployed in data centers and perform many important functions, e.g., the intrusion detection and firewall. Middleboxes are equipped with multiple kinds of resources, such as CPU and memory. Data flows undergoing different fu…
Abstract Advanced communication technology is the enabling factor for distributed sensing and control in smart grid. The performance of communication has a significant effect on the performance of the controllers that manage a power system. This effect is more profound when transient level behavior and critical applications are concerned. In these cases, an important issue is to design contro…
In this article I propose a method of interviewing for descriptive phenomenological research that offers an explicit, theoretically based approach for researchers. My approach enables application of descriptive phenomenology as a total method for research, and not one just focused on data analysis. This structured phenomenological approach to interviewing applies questions based on themes of ex…
Live imaging of animals infected with pathogenic microbes poses a contamination risk to equipment, personnel, and other animals. A Caliper animal isolation chamber designed for the IVIS® Spectrum imaging system was tested as a containment device for mice infected with microbes assigned to animal biosafety level-3 (ABSL-3). A testing protocol was developed by adapting two published standards to…
Physiology is defined as ‘the scientific study of the bodily function of living organisms and their parts’. There is a natural symbiosis between function (physiology) and structure (anatomy) from which physiology emerged as a separate discipline in the late 19th century. A good understanding of anatomy and physiology is an essential prerequisite for understanding what happens when things go…
Human anatomy is the foundation upon which the education of our medical, dental, and allied health science students is built. However, today’s biomedical science curriculum must cover an ever-increasing body of scientific knowledge, often in fewer hours, as competing disciplines and new technologies emerge. Many of these same technologies, especially those in the imaging science fields, have …
Bringing climate change under control is one of the great historic challenges facing humanity in the 21st century. To succeed, the international community must reach an ambitious and comprehensive global agreement that provides the framework for worldwide action to keep global warming below dangerous levels. The most convincing leadership the European Union can provide is to become the …
Abstract Surface texturing has been effectively used to improve tribological performance of sliding surfaces. Reduction in friction, increase in hydrodynamic load carrying capacity, reduction in wear and increase in fluid film stiffness are few examples of the benefits that can be obtained by surface texturing. In order to obtain these benefits, several researchers have investigated the effe…
Abstract Laminated glass became a popular safety glass. The very soft interlayer of polymeric material impedes the slippage between glass layers, bending in parallel, by shear stress. The shear stress of the interlayer breaches the principle of straight normals remaining straight after deformation, on which is based the conventional shell elements in finite element (FE) analysis. As a resu…
Abstract A numerical analysis is presented of the microstructural effects on the deformation and fracture of friction stir welds in aluminium alloys. A dynamic boundary-value problem in a plane strain formulation is solved numerically by the finite-difference method. Experimental polycrystalline microstructures inherent in different weld zones—base material, weld nugget, and thermo-mechanic…
Please note that Managing the New Frontiers is not meant to be prescriptive or seminal nor is it an academic tome. Although it’s often ignored, the material within these pages may be familiar to those who keep abreast of management topics and current events. Simply put, I have no desire to re-label the fundamentals of management or the work of others and pretend that something new has been d…
This text was written for an introductory course in fluid mechanics. Our approach to the subject, as in previous editions, emphasizes the physical concepts of Auid mechanics and methods of analysis that begin from basic principles. The primary objective of this book is to help users develop an orderly approach to problem solv ing. Thus we always start from governing equat…
Technical advances have made diagnoses quicker, safer, and more accurate. Sometimes it appears that careful history taking and examination are less important than knowing which test to order. However, the technology is expensive and access is limited. As medical costs are increasingly scrutinized by the paying agencies, private or public, there will be limitations on both diagnostic inve…
The ever growing demand for wireless data communications is driving a need for new technologies to augment the existing radio frequency approaches (such as WiFi). Visible light communications (VLC) offers a means to do this, using the unlicensed visible region of the electromagnetic spectrum for wireless communications, where hundreds of terahertz of bandwidth are available. The adoption of l…
In modern, stressed distribution system, voltage stability is a major concern from planning and operation perspectives. Remote wind farm connected to a weak distribution system through a long line could adversely affect the voltage stability of the respective distribution network. This paper investigates the transient and steady-state voltage issues of a distribution network with a distant dou…
First reported by Farnum as much as 40 years ago, diketopyrrolopyrroles (2,5-dihydropyrrolo[4,3- c ]pyrrolo-1,4-diones) are currently one of the most widely used dyes, with applications that span high-quality pigments, fi eldeffect transistors, bulk-heterojunction solar cells, dye-sensitized solar cells,and fl uorescence imaging. Due to the breadth of their utility, there have been several foc…
Layered transparent photonic stacks are known to give rise to highly brilliant color in a variety of living organisms. [ 1 ] The biomimetic replication of these structures not only offers a wide range of applications, but can also be used as a tool to gain understanding of the biological processes responsible for the self-assembly of these structures in nature. Recent studies showed that cellul…
Optical sensing from the ultraviolet (UV) to the near infrared (NIR) range have broad applications including imaging, telecommunications,biomedicine, environmental monitoring and defence sensing. [ 1–3 ] It is desirable to have a photodetector with a response spectrum covering a broad spectral range from UV to NIR. However, commercially available solid-state photodetectors have relatively nar…
The gyroid is a continuous and triply periodic cubic morphology which possesses a constant mean curvature surface across a range of volumetric fi ll fractions. Found in a variety of natural and synthetic systems which form through self-assembly, from butterfl y wing scales to block copolymers, the gyroid also exhibits an inherent chirality not observed in any other similar morphologies. These …
Plasmonic metasurfaces are investigated that consist of a sub-wavelength line pattern in an ultrathin (∼10 nm) silver fi lm, designed for extraordinary suppressed transmission (EOST) in the visible spectral range. Measurements with a near-fi eld scanning optical microscope (NSOM) demonstrate that farfi eld irradiation resonantly excites antenna-like (bright) modes that are localized on the m…
In this work we studied the interface growth upon deposition of indium-tin oxide (ITO) on amorphous hydrogenated Si (a-Si:H)/crystalline Si (c-Si) structures. The analysis methods used were X-ray photoelectron spectroscopy (XPS) and ultraviolet photoelectron spectroscopy (UPS) in combination with in situ film growth with magnetron sputtering. The analysis was complemented with transmission elec…
Structural, optical, and electrical properties of multilayer stacks ZnO:Al/Ag/ZnO:Al and ZrO2/Ag/ZrO2 are studied. The stacks are deposited on glass substrates without heating by consecutive r.f. magnetron sputtering of ZnO:Al and Ag or ZrO2 and Ag targets, respectively. The properties of samples as-deposited and annealed in forming gas atmosphere, at 180 8C for 1 h are compared. The structural…
(Ga,In)N/GaN multiple quantum well blue light emitting diodes (LEDs) grown on mesa-patterned silicon substrates with improved electro-optic characteristics are demonstrated.The active regions are grown on top of high-reflectivity AlN/(Al,Ga)N distributed Bragg reflectors (DBRs). Due to efficient stress relaxation at the mesa edges, crack formation during growth or upon the post-growth coolingd…
The blocking problems in equipment and flowlines caused by precipitation of wax solids is a well-known problem and large research efforts have been focused on developing procedures dealing with wax deposition. Among the different alternatives, the use of chemicals is frequently used to inhibit wax precipitation.The presence of these compounds modifies the size and/or the shape of the paraffini…
Production of biogas utilizing agricultural wastes is one of the most demanding technologies for generating energy in sustainable manner considering environmental concerns. However, though the agricultural wastes are available in abundance,the technologies used for the production of biogas such as biological and thermochemical processes are not very efficient. In the present article, we describ…
This paper aims at providing an updated overview of the main achievements in the development of solar cells based on Cu2ZnSn(S,Se)4 (CZTS(Se)) kesterite absorbers obtained by electrodeposition. Although undoubtedly challenging, the ultimate goal is to learn from the past works and build a solid framework for future advances in this field. What is the reason for the lower efficiency of electro…
This paper aims toward the first step for green campus approach for Indian School of Mines (ISM) campus. Comparative study of the performances for nine different commercialized solar panels made of Maxeon Cell Technology, HIT (Heterojunction with Intrinsic Thin layer), monocrystalline silicon (Mono C-Si), polycrystalline silicon (Poly C-Si), Micromorph, SCHOTT, amorphous silicon (a-Si), CIGS, …
To produce smooth, crack-free, and highly crystalline absorber layers are the main challenges in the fabrication of thin film solar cells using nanoparticle-based solution-processing technologies.In this work, we report on the optimization of the spray deposition parameters to produce highly homogeneous CuIn1xGaxS2 thin films with controlled thickness using nanoparticle-based inks. We further …
Technological evolution of fl exible optoelectronic devices, such as solar cells or light emitting diodes, [ 1–6 ] must be accompanied by that of fl exible optical and electronic materials in order to fulfi ll the increasing requirements of higher performance and functionality. In that regard, last years have seen a boost of the research in this fi eld, a wide variety of approaches having bee…
Adverse Outcome Pathways (AOPs) provide an opportunity to develop new and more accurate safety assessment processes for drugs and other chemicals, and may ultimately play an important role in regulatory decision making. Not only can the development and application of AOPs pave theway for the development of improved evidence-based approaches for hazard and risk assessment, there is also the pro…