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Article
Publication date: 1 January 1991

H. Ohdaira, K. Yoshida and K. Sasaoka

This paper reports on the development of a simple manufacturing process for polymeric multilayer substrates utilising the thermoplasticity of thermoplastic resin. Features…

Abstract

This paper reports on the development of a simple manufacturing process for polymeric multilayer substrates utilising the thermoplasticity of thermoplastic resin. Features and defects noted in manufacturing trials of the substrates are also reported. The process involves a polymer‐based thick film conductive paste screen printed on a hole‐punched thermoplastic resin film and dried. The films are stacked to form multiple layers and are then compressed into one unit. As the extremely thin thermoplastic resin film layers are equivalent to a single layer, a feature of this substrate is its exceptional thinness. As thermoplastic resin is used as a base material, the soldering process and other connecting technologies which may be used in place of solder connection are also examined.

Details

Circuit World, vol. 17 no. 2
Type: Research Article
ISSN: 0305-6120

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Article
Publication date: 1 March 1987

M.S. Setty

As announced in the May issue of Hybrid Circuits, ISHM‐Benelux is organising a one‐day conference on applications of hybrid circuit technology.

Abstract

As announced in the May issue of Hybrid Circuits, ISHM‐Benelux is organising a one‐day conference on applications of hybrid circuit technology.

Details

Microelectronics International, vol. 4 no. 3
Type: Research Article
ISSN: 1356-5362

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Article
Publication date: 1 February 1990

The fifth in the series of Printed Circuit World Conventions is being held in Glasgow, Scotland, from 12—15 June 1990. It is organised by the UK Printed Circuit World…

Abstract

The fifth in the series of Printed Circuit World Conventions is being held in Glasgow, Scotland, from 12—15 June 1990. It is organised by the UK Printed Circuit World Convention Committee under the direction of the co‐sponsors: EIPC (Europe), IMF (UK), IPC (USA), JPCA (Japan) and PCIF (UK).

Details

Circuit World, vol. 16 no. 3
Type: Research Article
ISSN: 0305-6120

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Article
Publication date: 1 December 2000

Happy Holden and Richard Charbonneau

This paper reveals a new methodology for predicting the most efficient design rules to follow for high density printed wiring boards prior to physical layout. The only…

Abstract

This paper reveals a new methodology for predicting the most efficient design rules to follow for high density printed wiring boards prior to physical layout. The only input is from a schematic diagram, parts list and proposed board size. The methodology attempts to a priori determine the wiring capabilities of different PWB designs for a given product application. The particular focus is the difference between through‐hole and HDI designs.

Details

Circuit World, vol. 26 no. 4
Type: Research Article
ISSN: 0305-6120

Keywords

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Article
Publication date: 1 April 1990

Printed Circuit World Convention 5, which took place at the Forum Hotel and Scottish Exhibition & Conference Centre, Glasgow, from 12–15 June 1990, will be reported in two…

Abstract

Printed Circuit World Convention 5, which took place at the Forum Hotel and Scottish Exhibition & Conference Centre, Glasgow, from 12–15 June 1990, will be reported in two parts. Part 1, in this issue, covers an introduction to the event, the Opening Ceremony and a number of the technical sessions. The remaining technical sessions will be reported in Part 2 in the following issue.

Details

Circuit World, vol. 17 no. 1
Type: Research Article
ISSN: 0305-6120

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Article
Publication date: 14 October 2021

Francisco Javier Plascencia Jauregui, Agustín Santiago Medina Vazquez, Edwin Christian Becerra Alvarez, José Manuel Arce Zavala and Sandra Fabiola Flores Ruiz

This study aims to present a mathematical method based on Poisson’s equation to calculate the voltage and volume charge density formed in the substrate under the floating…

Abstract

Purpose

This study aims to present a mathematical method based on Poisson’s equation to calculate the voltage and volume charge density formed in the substrate under the floating gate area of a multiple-input floating-gate metal-oxide semiconductor metal-oxide semiconductor (MOS) transistor.

Design/methodology/approach

Based on this method, the authors calculate electric fields and electric potentials from the charges generated when voltages are applied to the control gates (CG). This technique allows us to consider cases when the floating gate has any trapped charge generated during the manufacturing process. Moreover, the authors introduce a mathematical function to describe the potential behavior through the substrate. From the resultant electric field, the authors compute the volume charge density at different depths.

Findings

The authors generate some three-dimensional graphics to show the volume charge density behavior, which allows us to predict regions in which the volume charge density tends to increase. This will be determined by the voltages on terminals, which reveal the relationship between CG and volume charge density and will allow us to analyze some superior-order phenomena.

Originality/value

The procedure presented here and based on coordinates has not been reported before, and it is an aid to generate a model of the device and to build simulation tools in an analog design environment.

Details

Microelectronics International, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1356-5362

Keywords

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Article
Publication date: 19 October 2015

Carlos Eduardo Díaz, Roemi Fernández, Manuel Armada and Felipe de Jesús García Gutiérrez

– This paper aims to provide an insight into recent advancements and developments of robotics for Natural Orifice Transluminal Surgery (NOTES) procedures.

Abstract

Purpose

This paper aims to provide an insight into recent advancements and developments of robotics for Natural Orifice Transluminal Surgery (NOTES) procedures.

Design/methodology/approach

Following an introduction that highlights the evolution from Minimally Invasive Surgery (MIS) to NOTES in the medical field, this paper reviews the main robotics systems that have been designed and implemented for MIS and NOTES, summarising their advantages and limitations and remarking the technological challenges and the requirements that still should be addressed and fulfilled.

Findings

The state-of-the-art presented in this paper shows that the majority of the platforms created for NOTES are laboratory prototypes, and their performances are still far from being optimal. New solutions are required to solve the problems confronted by the proposed systems such as the limited number of DOFs, the limited resolution, the optimal fixation and stiffening of the instruments for enabling stable and precise operation, the effective transmission of forces to the tip tools, the improvement of the force feedback feeling and the proper visualization and spatial orientation of the surgical field. Advances in robotics can contribute significantly to the development and future implementation of the NOTES procedure.

Originality/value

This paper highlights the current trends and challenges ahead in robotics applied to NOTES procedure.

Details

Industrial Robot: An International Journal, vol. 42 no. 6
Type: Research Article
ISSN: 0143-991X

Keywords

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