Some data regarding scientific research from Universidad Distrital Francisco José de Caldas in Scopus database in 2023

This number of the Ingeniería journal explores the participation of the researchers from Bogotá City in Colombia that selects our journal to present their contributions in different research areas of Engineering, which includes Industrial, Electrical, Electronic, Civil, Environmental, Agricultural, and Mechanical Engineering, among others.This number of the Ingeniería journal explores the participation of the researchers from Bogotá City in Colombia that selects our journal to present their contributions in different research areas of Engineering, which includes Industrial, Electrical, Electronic, Civil, Environmental, Agricultural, and Mechanical Engineering, among others

Wet etch methods for InAs nanowire patterning and self-aligned electrical contacts

Advanced synthesis of semiconductor nanowires (NWs) enables their application in diverse fields, notably in chemical and electrical sensing, photovoltaics, or quantum electronic devices. In particular, Indium Arsenide (InAs) NWs are an ideal platform for quantum devices, e.g. they may host topological Majorana states. While the synthesis has been continously perfected, only few techniques were developed to tailor individual NWs after growth. Here we present three wet chemical etch methods for the post-growth morphological engineering of InAs NWs on the sub-100 nm scale. The first two methods allow the formation of self-aligned electrical contacts to etched NWs, while the third method results in conical shaped NW profiles ideal for creating smooth electrical potential gradients and shallow barriers. Low temperature experiments show that NWs with etched segments have stable transport characteristics and can serve as building blocks of quantum electronic devices. As an example we report the formation of a single electrically stable quantum dot between two etched NW segments.Comment: 9 pages, 5 figure

On the electrical conductivity of alginate hydrogels

Hydrogels have been extensively used in the field of biomedical applications, offering customisable natural, synthetic or hybrid materials, particularly relevant in the field of tissue engineering. In the bioelectronics discipline hydrogels are promising mainly as sensing platforms with or without encapsulated cells, showing great potential in healthcare and medicine. However, to date there is little data in the literature which characterises the electrical properties of tissue engineering materials which are relevant to bioelectronics. In this work we present electrical characterization of alginate hydrogels, a natural polysaccharide, using a four-probe method similar to electrical impedance spectroscopy. The acquired conductance data show distinct frequency dependent features that change as a function of alginate and crosslinker concentration reflecting ion kinetics inside the measured sample. Furthermore, the presence of NIH 3T3 fibroblasts encapsulated in the hydrogels matrix was found to alter the artificial tissue’s electrical properties. The method used provides valuable insight to the frequency dependent electrical response of the resulting systems. It is hoped that the outcomes of this research will be of use in the development of cell/electronic interfaces, possibly towards diagnostic biosensors and therapeutic bioelectronics

The power academy in the UK: a successful initiative to attract graduates to the power industry

The power industry in the UK faces major challenges over the next two decades to renew ageing networks and accommodate new generation, especially renewables. As a consequence, the industry needs to recruit a new generation of well-qualified electrical engineering graduates. This paper describes the IET Power Academy, established in 2004 to attract engineering graduates into employment within the power industry. In 2008, 17 companies and 7 leading UK universities are collaborating in the scheme with over 60 scholarships being offered each year. The scholarship package includes a bursary, a contribution to university fees, paid vacation training and an annual seminar. The scheme can be judged to have been a success to date, though challenges still remain, including persuading greater numbers of school and college leavers to study electrical or electronic engineering at university. As time goes on, while the industry can expect to have largely addressed issues associated with graduate recruitment, mid-career support and retention is likely to emerge as a key concern

KAJIAN TERHADAP KESEDARAN DAN KESEDIAAN PELAJAR JABATAN KEJURUTERAAN ELEKTRIK DALAM PENGGUNAAN CIDOS DI POLITEKNIK SULTAN SALAHUDDIN ABDUL AZIZ SHAH

This study aims to identify the level of awareness and readiness in using CIDOS E-learning among students in the Department of Electrical Engineering in Politeknik Sultan Salahuddin Abdul Aziz Shah. Aspects of awareness and readiness to use CIDOS were identified for this study. A total of 90 respondents were involved in this study consisting of three programs in the Department of Electrical Engineering, which are Diploma in Electronic Engineering (Medical), Diploma in Electronic Engineering (Control), and Diploma in Electronic Engineering (Communication). The respondents were students of semester two December 2015 Session. Questionnaire method was used in getting relative information. The results were analysed using Statistical Package for Social Sciences (SPSS) version 18. The study found that the level of awareness and readiness of respondents is high with an overall mean of 3.9

Introducing Research Methods and Skills in a Workshop Environment.

Yes`Research Seminar Series¿ is a 10-credit, Level M module offered to MSc/MEng students undertaking programmes in the areas of Electrical and Electronic Engineering at the University of Bradford. The module¿s aims are twofold: i) to disseminate stateoftheart information that could form the basis for future research programmes¿ and ii) to introduce the stages involved in the preparation and presentation of a research paper.Higher Education Academ

Microwave and Millimeter-Wave Sensors, Systems, and Techniques for Electromagnetic Imaging and Materials Characterization

1Applied Electromagnetics Group, Department of Naval, Electrical, Electronic, and Telecommunication Engineering, University of Genoa, 16145 Genoa, Italy 2Applied Microwave Nondestructive Testing Laboratory (amntl), Department of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USA 3Department of Quality, Anritsu Company, Morgan Hill, CA 95037, US

Polymer Composites for Electrical and Electronic Engineering Application

Polymer composite materials have attracted great interest for the development of electrical and electronic engineering and technology, and have been widely applied in electrical power systems, electrical insulation equipment, electrical and electronic devices, etc. Due to the significant expansion in the use of newly developed polymer composite materials, it is necessary to understand and accurately describe the relationship between composite structure and material properties, as only based on thorough laboratory characterization is it possible to estimate the properties for their future commercial applications. This book focuses on polymer composites applied in the field of electrical and electronic equipment, including but not limited to synthesis and preparation of new polymeric materials, structure–properties relationship of polymer composites, evaluation of materials application, simulation and modelling of material performance

Berry Phase Transition in Twisted Bilayer Graphene

The electronic dispersion of a graphene bilayer is highly dependent on rotational mismatch between layers and can be further manipulated by electrical gating. This allows for an unprecedented control over electronic properties and opens up the possibility of flexible band structure engineering. Here we present novel magnetotransport data in a twisted bilayer, crossing the energetic border between decoupled monolayers and coupled bilayer. In addition a transition in Berry phase between pi and 2pi is observed at intermediate magnetic fields. Analysis of Fermi velocities and gate induced charge carrier densities suggests an important role of strong layer asymmetry for the observed phenomena.Comment: 20 pages main paper + 10 pages supporting informatio

Towards a TCT-inspired electronics concept inventory

This study reports on the initial work on the use of Threshold Concept Theory (TCT) to develop a threshold-concept inventory – a catalogue of the important concepts that underlie electronics and electrical engineering (EE) – and an assessment tool – to investigate the depth of student understanding of threshold and related concepts, independent of students’ numerical ability and knowledge mimicry in the first-year course in electrical engineering. This is both challenging and important for several reasons: there is a known issue with student retention (Tsividis, 1998; 2009); the discipline is relatively hard for students because it concerns invisible phenomena; and finally it is one that demands deep understanding from the very start (Scott, Harlow, Peter, and Cowie, 2010). Although the focus of this research was on electronic circuits, findings regarding teaching and learning of threshold concepts (TCs) will inform lecturers in three other disciplines who are part of our project on threshold concepts