3 research outputs found
Licklider Correspondence
No full textCorrespondence between Kevin Lynch and J.C.R. Licklider regarding the proposed topic of study. The study discussed became the Perceptual Form of the City, a research project investigating the individual’s perception of the urban landscape
Purcell effect in photonic crystal microcavities embedding InAs/InP quantum wires
No full textThe spontaneous emission rate and Purcell factor of selfassembled quantum wires embedded in photonic crystal micro-cavities aremeasured at 80 K by using micro- photoluminescence, under transient and steady state excitation conditions. The Purcell factors fall in the range 1.1 - 2 despite the theoretical prediction of ?15.5 for the figure of merit. We explain this difference by introducing a polarization dependence on the cavity orientation, parallel or perpendicular with respect to the wire axis, plus spectral and spatial detuning factors for the emitters and the cavitymodes, taking in account the finite size of the quantum wires. © 2012 Optical Society of America.We want to acknowledge financial support from the Spanish MICINN through Grants: TEC 2005-05781-C03-01/03, TEC2008-06756-C03-01/03, S-0505-TIC-0191, Consolider-Ingenio 2010 QOIT (CSD2006-0019), and CAM (S2009ESP-1503). The main author, J. C.-F., thanks also the Spanish MCI for his FPI grant BES-2006-12300.Peer Reviewe
Sustainable poly(lactic acid) transformation: Leveraging agri-food waste-compatibilization strategies nexus for enhanced properties
No full textThe paper comprehensively reviews the upcycling and utilization of agri-food loss and wastes (FLWs) in poly(lactic acid) (PLA)-based biocomposites from the perspective of material circularity. The massive volume of unwanted and unvalued FLWs contributed from fruit producers (durian husk, pineapple leaf, orange peel, and apple), post-consumer products (spent coffee ground, sugarcane bagasse, coconut husk, crustacean shells), and agricultural sectors (rick husk, rice straw, wheat straw, and corn stover) is generally discarded and incinerated. Notably, these FLWs can be collected and upcycled into valuable products depending on the final application, endowing them with a meaningful second life. This upcycling approach promotes environment-friendliness and reduces the product’s carbon footprint. However, gaps and challenges in creating high-performance biocomposites remain critical to a translatable product. To address that, this review comprehensively discussed the recent progress and strategies to enhance the compatibility of PLA and the various FLW biocomposites, such as improved processability, well-balanced properties, heat resistance, and increased interfacial adhesion. The overall mechanical, thermal, processability, and biodegradability performances are further examined and elaborated. Furthermore, the current and prospective applications, such as packaging, automotive, construction, and 3D printing of FLWs/PLA products, are discussed. Finally, the prospects and opportunities of these FLWs/PLA biocomposites are shared to give a view into the future. Graphical Abstract: (Figure presented.)Author: J. C. C. Yeo, funder: Agency for Science, Technology and Research (A*STAR), GAP Grant (Grant No. I22D1AG014). Author: J. K. Muiruri, no funder. Author: P. S. K. Lee, no funder. Author: R. Vijayakumar, no funder. Author: T. T. Lin, no funder. Author: X. Zhang, no funder. Author: W. Thitsartarn, no funder. Author: C. He, No funder. Author: N. Hadjichristidis, no funder. Author: Z. Li, Agency for Science, Technology and Research (A*STAR), RIE2025 Manufacturing, Trade and Connectivity (MTC) Programmatic Fund (M22K9b0049)
