Recent progress and perspective in additive manufacturing of EMI shielding functional polymer nanocomposites

Because of rapid progress in the electronics industry,the market has faced a huge demand for novel materials in the field of electromagnetic interference(EMI)shielding.Conductive functional polymer composites have demonstrated great potential to fulfill this requirement.To synthesize the polymeric composites,functional conductive nanoadditives such as graphene,carbon nanotubes,and MXene are commonly added to polymeric matrices,and the conductive polymer nanocomposites exhibit promising electrical conductivity as well as EMI shielding performance.Additive manufacturing(AM),also referred to as threedimensional(3D)printing,has been increasingly employed to fabricate complicated geometry components in the medical,aerospace,and automotive industries.AM has also been used to fabricate advanced EMI shielding materials for sensors,supercapacitors,energy storage devices,and flexible electronics.This review aims at introducing the different 3D printing methods applied for the fabrication of EMI shielding polymer nanocomposites.The impact of the AM process on the functionality of the samples is also reviewed.Additionally,the influence of the nanofiller type and amount on the microstructure and performance of the fabricated nanocomposites is discussed.Finally,the prospects and recommended works for future study are outlined.

A review of computerized hospital layout modelling techniques and their ethical implications

Purpose:This paper reviews an area of interdisciplinary collaboration in the design of healthcare facilities that attempts to optimize hospital space-planning using automated statistical techniques from the discipline of Operations Research(OR).This review articulates Facility Layout Problems(FLPs)as a general class of OR problems.Furthermore,the review highlights limitations of these techniques,which necessitate an ethical and participatory engagement with computerized processes of healthcare architecture.Design/methodology/approach:An in-depth critical review was carried out,which revealed a number of common themes,collectively theorized as metamodeling processes,or models of models,through which various FLP modelling techniques can be challenged and debated in terms of their architectural viability,and ethical ramifications.Findinss:This review provides a methodological basis for the further evaluation of computational models.It was found that most of the reviewed studies are functionally focused on flow efficiency and,in general,do not consider broader contextual,relational,social,or salutogenic design values.Orisinality/value:This review is the first on the subject written from an architectural perspective.It can be used by a broad range of readers as its critical review of past and present hospital layout modelling techniques discusses their capabilities and limitations.As such,it also enables them to consider ethical values while critiquing the epistemology of computational processes hidden beneath algorithmic outputs.