The applications and interest in thermal analysis and calorimetry have grown enormously during the last half of 20th century. The renaissance in these methods has been fueled by several influences, not least of which has been the revolution in instrumentation resulting from computer automation. Our ingenuity and vision have also expanded to recognize the tremendous versatility of these techniques. They have long been used to characterize materials, decompositions, and transitions. We now appreciate the fact that these techniques have greatly increased their utility in studying many processes such as catalysis, hazards evaluation, etc., or to measuring important physical properties quickly, conveniently, and with markedly improved accuracy. Consequently, thermal analysis and calorimetry have grown in stature and more scientists and engineers have become, at least part time, practitioners. It is very desirable that those who are new to the field can have a source of information describing the basic principles and current state of the art. Examples of the prevailing applications of these methods are also essential to spur recognition of the potential for future uses. The use of these methods is highly interdisciplinary and any adequate description must encompass a range of topics well beyond the interests and capabilities of any single investigator. To this end, a convenient four-volume compendium of such information has been prepared by recognized experts in various aspects of the topic. The editorial team has chosen authors with great care in an effort to produce a readable, informative handbook on this broad topic. The chapters are not intended to be a comprehensive review of the specific subject. The purpose is that they will enable the reader to glean the essence of the subject and form the basis for further critical reading or actual involvement in the topic. The goal of the editorial team is to spur the imagination to recognize the potential application of these methods to specific goals and efforts. In addition it is hoped to anticipate and answer questions, to guide the reader in the selection of appropriate techniques, and to help him perform them in a proper and meaningful manner.

Handbook of thermal analysis and calorimetry

Integrated optics and new wave phenomena in optical waveguides

Vertical-cavity electrically driven lasers with three GaInAs
quantum wells and diameters of several μm exhibit room-temperature pulsed current thresholds as low as 1.3mA with 958 nm output wavelength.

Low-Threshold Electrically Pumps Vertical-Cavity Surface-Emitting Microlasers

The invention relates to device processing, packaging and interconnects that will yield integrated electronic circuitry of higher density and complexity than can be obtained by using conventional multi-chip modules. Processes include the formation of complex multi-function circuitry on common module substrates using circuit tiles of silicon thin-films which are transferred, interconnected and packaged. Circuit modules using integrated transfer/interconnect processes compatible with extremely high density and complexity provide large-area active-matrix displays with on-board drivers and logic in a complete glass-based modules. Other applications are contemplated, such as, displays, microprocessor and memory devices, and communication circuits with optical input and output.

High density electronic circuit modules

on his own subject; in this book the reader will not be disappointed. Moreover, the translation from the original French, with the inclusion of some new material, suffers from few of the defects so frequently seen, for it reads fluently and spontaneously as if it were the original text. The first chapter deals with the nature of light and its relation to other forms of radiant energy: a succinct and interesting review, followed by a full description of different types of illuminants including the various types of artificial lighting and natural lighting from the sun. This is followed by a description of the physiology of vision and the functioning of the eye shown by experiments carried out on the human eye by physical methods. This part comprises a full discussion of such problems as photometry, the illumination of the retina, luminance efficiency and the duality of the retina, colorimetry and the trivariance of the retina, colour vision and its anomalies, and the various thresholds, time effects, and the spatial interactions affecting vision. The second section of the book is more physiological and speculative. It is introduced by a description of the relevant anatomy of the eye, the photochemistry and electrophysiology of vision, the various theories of colour vision, and a physiological interpretation of the visual thresholds. The book is easy and good to read and gives a fair and critical exposition of its subject. It should be useful not only to the ophthalmologist but also to the physiologist and physicist.

https://bjo.bmj.com/content/bjophthalmol/53/1/66.1.full.pdf

Light, Colour and Vision

We propose a new high-power laser in which an array of N lasers is coupled to another of N + 1 lasers through Y-junctions. The field distributions of the eigenmodes in the N-array are identical to those of the supermodes in the evanescently coupled laser array. The threshold gain for the lowest-order mode is much lower than the higher-order modes. This strong mode discrimination will enable very high-power single-lobe operation.

Single-lobe symmetric coupled laser arrays

For a class of linear time-invariant multivariable systems which cannot be decoupled by state-variable feedback, but which are invertible, an algorithm for designing a precompensating dynamic system is proposed which results in a new system that can be decoupled by state-variable feedback.

Design of precompensator for decoupling problem

Wave propagation in optical waveguides on substrates of magnetic, optically active, or birefringent material is analyzed. The conditions for TE \Leftrightarrow TM mode conversion are derived and computer calculations showing the characteristic of a quartz-substrate mode converter is obtained. A mathematical analysis of a gyrator using two mode converters in series is given and the schemes for an isolator, modulator, optical switch, and optical read-out devices are mentioned.

Wave propagation in thin-film optical waveguides using gyrotropic and anisotropic materials as substrates

A method based on transmission matrices that allows the emission spectra of arbitrarily complicated semiconductor laser structures to be computed below and above threshold has been developed. These can include active and passive periodic or uniform sections. As examples, the authors compute the emission spectra of a normal distributed feedback (DFB) laser, a DFB laser with a lambda /4 phase shifter, and a surface-emitting distributed Bragg reflector (DFB) laser. To do that, Petermann's method for calculating the spontaneous emission coupling coefficient has been extended to the case of a periodic waveguide. It is shown how the spontaneous emission, when treated correctly, can be used to measure the coupling coefficient of the grating in a DFB laser with a lambda /4 phase shifter. >

A new method for the calculation of the emission spectrum of DFB and DBR lasers

The normal mode approach is used to calculate the fundamental limits on crosstalk and switching characteristics in directional coupler switches of the stepped delta beta type. The normal modes are calculated numerically as well as analytically using a method for computing the eigenmodes of two coupled, identical waveguides with an antisymmetric index perturbation. The results of the two methods are compared to one another as well as to the results of coupled-mode theory. It is shown that the theoretical minimum for the crosstalk level is very low for the stepped delta beta structure. Nonzero crosstalk was found in some cases where coupled-mode theory predicts zero crosstalk. This is attributed to the improper handling of discontinuities in coupled-mode theory. >

Crosstalk and switching characteristics in directional couplers

Handle everyday research tasks with reliable, citation-backed results

Your personal Research Agent to handle research tasks with citation-backed results

Popular Tasks used by Researchers

How can I help with your research?

Meet SciSpace

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

S. Wang

Author Tools

Chat about Author