Author Archives: Padmaja Muralidharan

About Padmaja Muralidharan

Library

Hype Cycle for Semiconductors and Electronics Technologies

The Gartner Hype Cycle is a graphical depiction of a common pattern that arises with each new technology or other innovation, published by  Gartner,  which  is an information technology research and advisory company. Introduced in 1995, the hype cycle characterizes the typical progression of innovation, from overenthusiasm through a period of disillusionment to an eventual understanding of the innovation’s relevance and role in a market or domain. The five phases in the Hype Cycle are Technology Trigger, Peak of Inflated Expectations, Trough of Disillusionment, Slope of Enlightenment and Plateau of Productivity. They highlight overhyped areas and estimate when technologies and trends will reach maturity.   Each year, Gartner creates more than 90 Hype Cycles in various domains as a way for clients to track technology maturity and future potential.

To  access The Gartner Hype Cycle for Semiconductors and Electronics Technologies 2015, click here.

Some other interesting hype cycles are ‘Hype Cycle for Emerging Technologies, 2015’ , Hype Cycle for Virtualization, 2015, Hype Cycle for the Connected Home, 2015, Hype Cycle for Networking and Communications, 2015 etc.

You can access these hype cycles from Gartner Core Research database subscribed by the library.

International Year of Light

In order to raise the global awareness on how light-based technologies promote sustainable development and its impact on energy, education, agriculture and health sectors, United Nations had declared 2015 as the International Year of Light and Light-based Technologies (IYL 2015).  Activities on this are continuing  in year 2016 also.

Presented here are some featured articles from popular journals on light based technologies.

These articles can be accessed from the library subscribed e-journals.

(i) Past, present, and future of fringe-field switching-liquid crystal display Journal of Information Display, Vol 15 (2), 2014

The article presents the technology behind the fringe-field switching-liquid crystal display (FFS-LCD), its development, technical issues and future advances. The FFS-LCD which was first reported to the public in  1998 has  become a major  component now for high resolution, high-image quality, low power consumption, and touch screen suitability

(ii) Integrated and topological liquid crystal photonicsLiquid Crystals, Vol 41 (3), 2014

In this article the author presents his views on nematic colloids, applications of these materials in future photonic microdevices and future challenges towards the realisation of integrated liquid crystal microphotonics. He concludes the article with the suggestion that that we could use the fascinating topological variety and flexibility of LCs indicates that they can be used for engineering of novel microphotonic devices based exclusively on soft matter.

(iii) Topological Soft Matter for Optics and PhotonicsMolecular Crystals and Liquid Crystals, vol. 594(1), 2014

The authors M. Ravnik and S. Zumir provides overview of liquid crystal colloidal structures and show that 3D colloidal crystals can be assembled from elastic dipoles of spherical beads in nematic liquid crystals or via inherently inhomogeneous order profiles in bulk and confined cholesteric blue phases.

(iv) White-light generation using a remote-phosphor-coated diffusing surface excited by the high-brightness blue light-emitting diode – Journal of Information Display, vol.15 (2), 2014

The authors report the generation of white light using inorganic-phosphor-coated flexible diffuser using the commercially available blue-LED bulb as an excitation source and which works based on the principle of a down conversion layer and diffusing optics. The article points out the demerits of white-light generation by mixing RGB LEDs compared to the phosphor-based WLEDs and concludes that diffuser may find application in large-area illumination and decorative lighting, where flexible diffusers are required.

(v) A new method for monitoring an OLED panel for lighting by sensing the wave-guided lightJournal of Information Display, vol. 13 (3) 2012

The article presents a monitoring method for the luminance change occurring in an organic light-emitting diode (OLED) panel for lighting by optical sensing of the wave-guided light in the substrate and proposes a driving circuit which can be used to compensate any degradation in the luminance of the OLED panel.

(vi) Extending the lifespan of LED-lighting productsArchitectural Engineering and Design Management, vol. 11(2), 2015

The article explores the life lifespan of LED lighting products, the causes of their failure under real operating  conditions and provides design recommendations to extend the lifespan. The methodology used is a survey of close-ended questionnaires answered by LED lighting product manufacturers and consumers.

(vii) Environmental Impacts from the Solar Energy SystemsEnergy Sources, Part A: Recovery, Utilization, and Environmental Effects, vol.31 (8) 2008

The paper provides an overview of the positive impacts as well as the minor negative impacts of solar energy systems and the precautions that could be taken to minimize the environmental impacts.

(viii) Light shining through walls  – Contemporary Physics, vol.52 (3), 2011

The authors describe the different types of WISPs such as axions and axion-like particles, hidden-sector photons, minicharged particles, the present and future experiments and WISP in astrophysics and cosmology.

(ix) A Smart Sensor to Evaluate Visual Comfort of Daylight into Buildings  – International Journal of Optomechatronics, vol.2(4), 2008

The authors mention the main drawbacks of daylight as perpetual variation, unpredictability   and occupants’ needs based on subjective predictability.   They respond to these issues with the design of a global lighting system that has a smart device with an external sensor placed on the building roof, which measures the solar light distribution, venetian blinds to regulate the natural light flow through the windows, artificial lights to complete the global illumination within the room if necessary, and an indoor sensor, which aims at measuring the light conditions like they can be perceived by occupants.

(x) Adaptive lighting controllers using smart sensorsInternational Journal of Sustainable Energy. Vol 33(1), 2014

In this paper the authors present an advanced controller with fuzzy logic for artificial lights. Luminous efficiency of different types of lights based on ‘European Standard for Interior Lighting’, Available control techniques for energy savings of artificial light systems, fuzzy controller analysis, architecture and application of the controller in  different light systems are also explained.

(xi) Lumen Maintenance and Light Loss Factors: Consequences of Current Design Practices for LEDsLEUKOS: The Journal of the Illuminating Engineering Society of North America, vol.10 (2) 2014

The authors examine the uncertainty in light loss factors, presents comparisons and consequences of lamp lumen depreciation factors,  compares the performance of some conventional and LED products, and examines alternatives to the recommended approach for determining lamp lumen depreciation (LLDs) for LED products in this article.

(xii) Optimal hybrid renewable energy systems for energy security: a comparative studyJournal of Sustainable Energy . Vol 29 (1), 2010

The article explores a hybrid renewable energy system that may be used to may be used to reduce dependency on either conventional energy or renewable systems.

(xiii)  Environmental Impacts from the Solar Energy SystemsEnergy Sources, Part A: Recovery, Utilization, and Environmental Effects. Vol.31 (2), 2008

The authors provide an overview of some positive impacts of the solar energy systems, which are major sources of alternative energy as well as some minor negative impacts on the environment during their production and operation. Environmental Impacts from the Solar Energy Systems namely solar cells elaborated in the article are land use and thermal pollution, visual impacts, air pollution, noise intrusion during the  construction phase and visual  burdens. In  conclusion  they provide the measures that  can  be implemented to  reduce the  negative impacts.

To  know more about  the International Year of Light, you can  access http://www.light2015.org/Home.html

EEE Prof Connects Us With The Electric Grid @ Lee Wee Nam Library

As part of Lee Wee Nam Library’s Lunchtime Talk Series, Engineering Library hosted the talk “Solar, Wind, Renewables: Reinforcing the Electric Grid” at the Learning Commons on  18 February 2016 . On this occasion Assistant Professor Abhisek Ukil from the School of EEE, gave a talk about power generation, different types of renewable energy, their utilization in the electric grid and the respective challenges. The talk was not just of interest to students and researchers from the electrical or electronic engineering background, but also from other NTU communities like MAE, SCE, IGS as well as HSS and RSIS. More than 58 participants came away from the talk with a better knowledge on the production of electric power and the use of renewable energy for electric power generation. Interest on this topic looks to be strong judging by the number of questions fielded to Prof Abhisek by the participants after his talk. See more photos of the event here.

Different aspects of assessment of engineering Ph.D. thesis

Would you like to know what engineering examiners expect of Ph.D. research?

In the article “An analysis of Ph.D. Examiners’ Reports in Engineering”, from European Journal of Engineering Education. the authors, Elena Prietoa, Allyson Holbrooka & Sid Bourkea examine the different aspects of the assessment of engineering doctorates. Their work is based on the data collected between 2003 and 2010 for a total of 1220 Australian Ph.D. theses by analysing examiner reports.

They point out that examiners in engineering favoured theses they considered were strong in terms of scope, significance and contribution, and a thorough analysis of findings. Other factors that have direct correlation to the quality of thesis as highlighted by the authors are breadth, depth and recency of the literature review, communication and editorial correctness of the thesis. Publications arising from the thesis also determine the quality of the thesis, even though they  have lesser significance.

This is one of the popular articles in Taylor & Francis journals published in 2015.

Click here to read the full text of the article, from the European Journal of Engineering Education, which is subscribed by the library.

Some Featured Articles in the ‘International Year of light’

lightIn order to raise global awareness on how light-based technologies promote sustainable development and its impact on energy, education, agriculture and health sectors, United Nations has declared 2015 as the International Year of Light and Light-based Technologies (IYL 2015)As the year comes to a close, let us take a look at some featured journal articles on light based technologies. These articles are published by Taylor & Francis and can be accessed from the library subscribed e-journals.

(i) Past, present, and future of fringe-field switching-liquid crystal display – Journal of Information Display, Vol 15 (2), 2014
The article presents the technology behind the fringe-field switching-liquid crystal display (FFS-LCD), its development, technical issues and future advances. The FFS-LCD which was first reported to the  public in  1998 has  become a major  component now for high resolution, high-image quality, low power consumption, and touch screen suitability 

(ii) Integrated and topological liquid crystal photonics – Liquid Crystals, Vol 41 (3), 2014
In this article the author presents his views on nematic colloids, applications of these materials in future photonic microdevices and future challenges towards the realisation of integrated liquid crystal microphotonics. He concludes the article with the suggestion that that we could use the fascinating topological variety and flexibility of LCs indicates that they can be used for engineering of novel microphotonic devices based exclusively on soft matter.  Continue reading