Optimization of the Rework of Bended OLED Displays by Surface-Energy Control

Recent display technology has changed substantially from flat-type displays to bended displays. As a result, the lamination process for bonding the panel substrates and bended window glass has become difficult due to the changes in display shape, and the use of optically clear adhesive (OCA) makes it impossible to rework defective substrates due to residue problems. Therefore, it is necessary to research and develop a substrate-surface treatment that maintains the initial adhesion and is reusable via the complete removal of impurities during delamination in order to enable rework. In this paper, the possibility of maintaining adhesive force and reusing substrates was confirmed through the surface treatment of substrates and OCA using various materials. We found that a surface coating and a cooling treatment of additional substrates completely removed the impurities that remained on the substrates during reworking. These results could contribute to improving lamination-process technology and the productivity of the various forms of next-generation displays that are currently under development.

Making the New Zealand House 1792 – 1982

<p>A systematic investigation was undertaken of the techniques (materials and technologies) used to construct the shell of the New Zealand house (envelope and interior linings) between 1792 and 1982. Using census, manufacturing and import statistics with analysis of local and international archives and publications, principal techniques were selected and documented. A review of local construction and building publications provide a background to the development of construction education and training, as well as the speed of change. Analysis of census data showed that from 1858 to 1981 the majority of dwelling walls in terms of construction (appearance) were timber, brick, board or concrete, while the structure was timber frame. Analysis of import data for seven materials (galvanised iron, asbestos cement, cement, window glass, wood nails, gypsum and roofing slate) from 1870 to 1965 found the UK was a majority supplier until 1925, except for USA gypsum. For the rest of the period, the UK continued to play a preeminent role with increasing Australian imports and local manufacture. Examination of archival and published information on techniques used for the sub-floor, floor, wall (construction and structure), fenestration, roof and thermal insulation provide an overview of country of orign, decade of arrival, spread of use and, if relevant, reasons for failure. Forty materials (including earth and brick, stone, cement and concrete, timber and ferrous metals) and twenty-four technologies are documented. Revised dates of first NZ use are provided for eight of these e.g. the shift from balloon to platform framing occurred in the early 1880s rather than 1890s. Three case studies examine different aspects of the techniques (nails 1860 to 1965, hollow concrete blocks 1904 to 1910 and camerated concrete 1908 to 1920). The research shows that timber was the predominant structural (framing) material from 1792 to 1982. From the 1930s there was a shift away from timber construction (external appearance) to a wider range of products, including brick, board (asbestos- and more recently fibre-cement) and concrete. A new chronological classification of house development is proposed. These techniques travelled in a variety of ways and at speeds which indicate over this time New Zealand was technologically well connected and supported an innovative construction sector. The techniques covered are: Boards: asbestos, and cellulose fibre-cement, particle, plywood, pumice, softboard, and hardboard; Bricks: double and veneer; Building paper; Cement and lime: local and imported; Concrete: hollow block, monolithic, reinforced, Camerated, Oratonu and Pearse patents; Fired earth: bricks and terracotta roof tiles; Floors: concrete slab, suspended, and terrazzo; Framing: balloon, braced, light steel, and platform; Insulation: cork, fibreglass, macerated paper, perlite, pumice, foil, and mineral wool; Iron and Steel: cast and wrought iron, steel; Linings: fibrous plaster, plasterboard and wet; metal tile, shingles and slates; Nails: cut, hand-made, wire and plates; Piles: concrete, native timber and stone; Roof: strutted and truss rafter; Roofing: aluminium, corrugated iron, ; Sub-floor: vapour barrier, walls and ventilation; Timber: air and kiln drying, glulam, native, pit-saw and preservative treatments; Wall constructions: earth, log, slab, solid timber, raupo and stone; Weatherboards; and Windows: glass, aluminium, steel and timber frames.</p>

Making the New Zealand House 1792 – 1982

<p>A systematic investigation was undertaken of the techniques (materials and technologies) used to construct the shell of the New Zealand house (envelope and interior linings) between 1792 and 1982. Using census, manufacturing and import statistics with analysis of local and international archives and publications, principal techniques were selected and documented. A review of local construction and building publications provide a background to the development of construction education and training, as well as the speed of change. Analysis of census data showed that from 1858 to 1981 the majority of dwelling walls in terms of construction (appearance) were timber, brick, board or concrete, while the structure was timber frame. Analysis of import data for seven materials (galvanised iron, asbestos cement, cement, window glass, wood nails, gypsum and roofing slate) from 1870 to 1965 found the UK was a majority supplier until 1925, except for USA gypsum. For the rest of the period, the UK continued to play a preeminent role with increasing Australian imports and local manufacture. Examination of archival and published information on techniques used for the sub-floor, floor, wall (construction and structure), fenestration, roof and thermal insulation provide an overview of country of orign, decade of arrival, spread of use and, if relevant, reasons for failure. Forty materials (including earth and brick, stone, cement and concrete, timber and ferrous metals) and twenty-four technologies are documented. Revised dates of first NZ use are provided for eight of these e.g. the shift from balloon to platform framing occurred in the early 1880s rather than 1890s. Three case studies examine different aspects of the techniques (nails 1860 to 1965, hollow concrete blocks 1904 to 1910 and camerated concrete 1908 to 1920). The research shows that timber was the predominant structural (framing) material from 1792 to 1982. From the 1930s there was a shift away from timber construction (external appearance) to a wider range of products, including brick, board (asbestos- and more recently fibre-cement) and concrete. A new chronological classification of house development is proposed. These techniques travelled in a variety of ways and at speeds which indicate over this time New Zealand was technologically well connected and supported an innovative construction sector. The techniques covered are: Boards: asbestos, and cellulose fibre-cement, particle, plywood, pumice, softboard, and hardboard; Bricks: double and veneer; Building paper; Cement and lime: local and imported; Concrete: hollow block, monolithic, reinforced, Camerated, Oratonu and Pearse patents; Fired earth: bricks and terracotta roof tiles; Floors: concrete slab, suspended, and terrazzo; Framing: balloon, braced, light steel, and platform; Insulation: cork, fibreglass, macerated paper, perlite, pumice, foil, and mineral wool; Iron and Steel: cast and wrought iron, steel; Linings: fibrous plaster, plasterboard and wet; metal tile, shingles and slates; Nails: cut, hand-made, wire and plates; Piles: concrete, native timber and stone; Roof: strutted and truss rafter; Roofing: aluminium, corrugated iron, ; Sub-floor: vapour barrier, walls and ventilation; Timber: air and kiln drying, glulam, native, pit-saw and preservative treatments; Wall constructions: earth, log, slab, solid timber, raupo and stone; Weatherboards; and Windows: glass, aluminium, steel and timber frames.</p>

Investigating and correlating photoelectrochemical, photocatalytic, and antimicrobial properties of $$\hbox {TiO}_2$$ nanolayers

Semiconducting transition metal oxides such as $$\hbox {TiO}_2$$ TiO 2 are promising photo(electro)catalysts for solar water splitting and photoreduction of $$\hbox {CO}_2$$ CO 2 as well as for antibacterial, self-, water and air-cleaning coatings and admixtures in paints, building materials, on window glass or medical devices. In photoelectrocatalytic applications $$\hbox {TiO}_2$$ TiO 2 is usually used as photoanode only catalyzing the oxidation reaction. In coatings and admixtures $$\hbox {TiO}_2$$ TiO 2 works as heterogeneous catalyst and has to catalyze a complete redox cycle. While photoelectrochemical charge transport parameters are usually quite well accessible by electrochemical measurements, the quantitative description of photocatalytic properties is more challenging. Here, we present a systematic structural, photoelectrocatalytic, photocatalytic and antimicrobial study to understand if and how photoelectrochemical parameters can be used to predict the photocatalytic activity of $$\hbox {TiO}_2$$ TiO 2 . For this purpose $$\hbox {TiO}_2$$ TiO 2 thin films on flourine-doped tin oxide substrates were prepared and annealed at temperatures between 200 and 600 $$^{\circ }\hbox {C}$$ ∘ C . The film morphologies and thicknesses were studied by GIXRD, FESEM, and EDX. Photoelectrochemical properties were measured by linear sweep voltammetry, photoelectrochemical impedance spectroscopy, chopped light chronoamperometry, and intensity modulated photocurrent/ photovoltage spectroscopy. For comparison, photocatalytic rate constants were determined by methylene blue degradation and Escherichea coli inactivation and correlated with the deduced photoelectrocatalytic parameters. We found that the respective photoactivities of amorphous and crystalline $$\hbox {TiO}_2$$ TiO 2 nanolayers can be best correlated, if the extracted photoelectrochemical parameters such as charge transfer and recombination rates, charge transfer efficiencies and resistances are measured close to the open circuit potential (OCP). Hence, the interfacial charge transport parameters at the OCP can be indeed used as descriptors for predicting and understanding the photocatalytic activity of $$\hbox {TiO}_2$$ TiO 2 coatings.

Comparison of Camera Calibration and Measurement Accuracy Techniques for Phase Measuring Deflectometry

Phase measuring deflectometry (PMD) is a competitive method for specular surface measurement that offers the advantages of a high dynamic range, non-contact process, and full field measurement; furthermore, it can also achieve high accuracy. Camera calibration is a crucial step for PMD. As a result, a method based on the calibration of the entrance pupil center is introduced in this paper. Then, our proposed approach is compared with the most popular photogrammetric method based on Zhang’s technique (PM) and Huang’s modal phase measuring deflectometry (MPMD). The calibration procedures of these three methods are described, and the measurement errors introduced by the perturbations of degrees of freedom in the PMD system are analyzed using a ray tracing technique. In the experiment, a planar window glass and an optical planar element are separately measured, and the measurement results of the use of the three methods are compared. The experimental results for the optical planar element (removing the first 6 terms of the Zernike polynomial) show that our method’s measurement accuracy reached 13.71 nm RMS and 80.50 nm PV, which is comparable to accuracy values for the interferometer.

Circularity concepts for offsite prefabricated energy renovation of apartment buildings

Deep energy renovation includes the realisation of the full potential of energy performance. A circular deep renovation, which contributes to a circular built environment, is based on 100% life cycle renewable energy, and all materials used within the system boundaries are part of infinite technical or biological cycles with the lowest quality loss as possible. In the current study, the circularity potential was assessed for deep energy renovation from different aspects: circularity of materials, building component and building structure. Careful selection of materials as well as connection, position and disassembly possibilities are needed to increase the degree of circularity. This shows a good possibility to increase energy performance by using circularity principles. The window glass circularity analyse showed that, at best, the thermal transmittance of a new circular product can be more than three times lower than the original. The circular use of materials, components, and structures pose new challenges for the building physic design of building envelope structures.

Design of a Printed 5G Monopole Antenna on Vehicle Window Glass Using Parasitic Elements and a Lattice-Structure Reflector for Gain Enhancement

This letter proposes a novel design for a printed 5G monopole antenna on a vehicle window glass. The proposed antenna consists of a coplanar waveguide (CPW), a monopole radiator, parasitic elements, and a lattice-structure reflector. The parasitic elements are placed on either side of the monopole radiator to improve the bore-sight gain. To solve the radiation pattern distortion problem that occurs due to the thick vehicle window glass, the lattice-structure reflector is printed on the opposite side of the monopole radiator. Through fabrication and measurement of the proposed antenna, it is confirmed that the design improves bore-sight gain, and minimizes the radiation pattern distortion. The results demonstrate that the proposed 5G monopole antenna with parasitic elements and the lattice-structure reflector is suitable for 5G communication in vehicle applications.