Injection Molding of Free-Standing, Three-Dimensional, All-Metal Terahertz Metamaterials

2014 ◽  
Vol 2 (7) ◽  
pp. 663-669 ◽  
Author(s):  
Jinqi Wang ◽  
Shuchang Liu ◽  
Sivaraman Guruswamy ◽  
Ajay Nahata
2021 ◽  
Vol 4 (4) ◽  
pp. 3619-3630
Author(s):  
Peilin Zhang ◽  
Weiwei Wang ◽  
Jinzhe Liu ◽  
Chencheng Zhou ◽  
Jiao-Jiao Zhou ◽  
...  

2015 ◽  
Vol 3 (18) ◽  
pp. 9438-9445 ◽  
Author(s):  
Chao Wu ◽  
Lijun Fu ◽  
Joachim Maier ◽  
Yan Yu

A novel free-standing cathode film consisting of hierarchically porous carbon-encapsulated sulfur has been designed and fabricated for Li–sulfur batteries.


2012 ◽  
Vol 217-219 ◽  
pp. 1998-2001
Author(s):  
Tie Geng ◽  
Qing Hai Ren ◽  
Wei Qing Tu ◽  
Dan Dan Liu

According to the color contour map of the 3D injection molding simulation results, the commonly used color contour map drawing algorithm was researched, and a three-dimensional color image rendering algorithm which based on the "physical field values and color range mapping" was given too. And the key technologies of the algorithm which was used to draw 3D color contour map were introduced in detail. In the end, an example was given.


2001 ◽  
Author(s):  
Florin Ilinca ◽  
Jean-François Hétu

Abstract This paper presents simulations of co-injection molding problems computed by a three-dimensional finite element method. The polymer melts behave as generalized Newtonian fluids and non-isothermal effects are taken into account. In addition to the momentum, mass and energy equations, we solve two transport equations tracking the polymer/air and skin/core polymers interfaces. Solutions are shown for a center gated rectangular plate. The effect of varying the melt/mold temperature and the ratio between the skin and core materials is investigated. The solution obtained for the same skin and core materials is compared with those in which viscosities of core and skin materials are different. Finally, the solution for the co-injection of a C-shaped plate is presented.


1989 ◽  
Vol 67 (5) ◽  
pp. 1930-1940 ◽  
Author(s):  
E. H. Oldmixon ◽  
J. P. Butler ◽  
F. G. Hoppin

To clarify the mechanics of alveolar parenchyma, we undertook a stereological and topological study in perfusion-fixed canine lungs of the borders of alveolar septa. We defined the principal borders as those along which one septum 1) joins two others (J), 2) joins one other at a distinct angle (B), or 3) joins no other structure (E). E and B borders are invariably reinforced with heavy connective tissue cables; J borders are not. Relative net lengths, determined from the number of traces per section area, were J, 45%; E, 19%; and B, 25%. These were remarkably constant over 10 canine lobes (5 animals, 4 volumes). Parenchyma, then, departs from the simple models that comprise only Js and Es. Bs are important; their net length exceeds that of Es. With lobe deflation, E shortened somewhat more than required to maintain geometric similarity, suggesting that the alveolar duct contracted disproportionately. A three-dimensional reconstruction was made from serial sections, and individual border segments were followed through the reconstruction. Typical lengths of individual J, B, and E borders were nearly equal. To characterize how the network of borders were interconnected, we counted the nodes at which they meet by class, e.g., EBE for the meeting of one B, two Es. The most common are JJJJ, 26%; EEEJ, 10%; EBJ, 24%; EBE, 8%; BBJJ, 12%. If parenchyma were constructed only from free-standing entrance rings and septal junctions, only JJJJ and EEEJ would be anticipated. The presence of EBJ, EBE, and BBJJ underscores parenchymal complexity. Only 7% of septa examined were bordered entirely by Js. Connective tissue cables were not confined to the alveolar duct's lumen but often extended to the primary septa at the periphery of the ductal unit. They rarely linked adjacent alveolar ducts; only 1 in 200 cable segments crossed from one duct to another. These observations support the concept that the parenchyma is an elastic network, characterized in part by a serial mechanical linkage from connective tissue cable to septal membrane to cable again.


2018 ◽  
Vol 165 (16) ◽  
pp. A3932-A3942 ◽  
Author(s):  
Huanhui Chen ◽  
Libo Deng ◽  
Shan Luo ◽  
Xiangzhong Ren ◽  
Yongliang Li ◽  
...  

Arts ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 80
Author(s):  
Steven Jacobs

Before his international breakthrough shortly before the turn of the century, Belgian painter Raoul De Keyser (1930–2012) had a long career that reaches back to the 1960s, when he was associated with Roger Raveel and the so-called Nieuwe Visie (New Vision in Dutch), Belgium’s variation on postwar figurative painting that also entails Anglo-Saxon Pop Art and French nouveau réalisme. Dealing with De Keyser’s works of the 1960s and 1970s, this article discusses the reception of American late-modernist art currents such as Color-Field Painting, Hard Edge, Pop Art, and Minimal Art in Belgium. Drawing on contemporaneous reflections (by, among others, poet and critic Roland Jooris) as well as on recently resurfaced materials from the artist’s personal archives, this essay focuses on the ways innovations associated with these American trends were appropriated by De Keyser, particularly in the production of his so-called Linen Boxes and Slices. Made between 1967 and 1971, Linen Boxes and Slices are paintings that evolved into three-dimensional objects, free-standing on the floor or leaning against the wall. Apart from situating these constructions in De Keyser’s oeuvre, this article interprets Linen Boxes and Slices as particular variations on Pop Art’s fascination for consumer items and on Minimalism’s interest in the spatial and material aspects of “specific objects”.


Sign in / Sign up

Export Citation Format

Share Document