Results 71 to 80 of about 78,838 (289)

Nanolayer‐Encapsulated Stretchable Liquid‐Metal Sheets for Thermal Management

open access: yesAdvanced Functional Materials, EarlyView.
A stretchable liquid metal sheet with both high thermal conductivity and mechanical flexibility is developed. Its trilayer structure, comprising copper‐particle‐dispersed gallium liquid metal encapsulated by styrene‐butadiene‐styrene nanosheets, shows 40.4 W m−1 K−1 conductivity, elongation exceeding 200%, and retention of 96% of its initial ...
Daisuke Kuse   +16 more
wiley   +1 more source

Aluminium/polyimide adhesion

open access: yesActa Metallurgica et Materialia, 1993
AbstractWe present a theoretical study of the interactions between isolated aluminium atoms and a polyimide surface and between polyimide and aluminium surface. The effect of surface modification on adhesion is also discussed. Self-consistent geometry optimization and molecular orbital calculations have been carried out within CNDO approximation in a ...
Ramos, MMD, Stoneham, AM, Sutton, AP
openaire   +3 more sources

External Reflection From Two‐Photon Laser‐Printed Micromirrors Enables Photomechanical Actuation at a 90° Incident Angle

open access: yesAdvanced Functional Materials, EarlyView.
Light reflectance increases along incidence angle and transmittance significantly drops around 90‐degree incidence angle. Here, we report two‐photon laser printed micro mirrors that redirect the skimming light beam into normal light absorption. Using this technique, light‐driven micro walkers and grippers are demonstrated by using grazing incidence ...
Leilei Song, Jianfeng Yang, Hao Zeng
wiley   +1 more source

New Reflectable Materials on the Basis of Polyimides

open access: yesEurasian Chemico-Technological Journal, 2004
Electroconductive and reflective metallized polyimide films have been prepared by heterogeneous chemical modification of polyimide surface. By carrying out the chemical reactions in situ in the modified layers of polyimide surface, thereby a metal phase ...
Saule K. Kudaikulova
doaj   +1 more source

Baseline design of the filters for the LAD detector on board LOFT

open access: yes, 2014
The Large Observatory for X-ray Timing (LOFT) was one of the M3 missions selected for the phase A study in the ESA's Cosmic Vision program. LOFT is designed to perform high-time-resolution X-ray observations of black holes and neutron stars.
Barbera, M.   +6 more
core   +1 more source

Two‐Way Shape Memory Alloy and Polymer Composite Hybrid Smart Actuator With High Speed, Accuracy, and Reversible Deformation

open access: yesAdvanced Functional Materials, EarlyView.
Tailored thermo‐mechanical properties of shape memory polymer composites enable large reversible deformation as well as high actuation speed. Moreover, a structural design with curvature in the transverse direction achieves sub‐second actuation on heating and a larger recovery ratio on cooling. Finally, these newly developed smart two‐way actuators can
Dajeong Kang   +6 more
wiley   +1 more source

Copper Electrodeposition on Polyimide Substrate Using Polyaniline Film as a Seed Layer for Metallization of Flexible Devices

open access: yesInternational Journal of Electrochemical Science, 2018
The Metallization of flexible printed circuit boards is a key issue for the fabrication of flexible devices. In this study, Cu electrodeposition was performed on a flexible polyimide substrate using polyaniline film as a seed layer for the first time.
Dohyeun Lee   +4 more
doaj   +1 more source

A tough high performance composite matrix [PDF]

open access: yes, 1992
This invention is a semi-interpenetrating polymer network which includes a high performance thermosetting polyimide having a nadic end group acting as a crosslinking site and a high performance linear thermoplastic polyimide. An improved high temperature
Johnston, Norman J., Pater, Ruth H.
core   +1 more source

Novel Functional Materials via 3D Printing by Vat Photopolymerization

open access: yesAdvanced Functional Materials, EarlyView.
This Perspective systematically analyzes strategies for incorporating functionalities into 3D‐printed materials via Vat Photopolymerization (VP). It explores the spectrum of achievable functionalities in recently reported novel materials—such as conductive, energy‐storing, biodegradable, stimuli‐responsive, self‐healing, shape‐memory, biomaterials, and
Sergey S. Nechausov   +3 more
wiley   +1 more source

Surface Potential Decay and DC Conductivity of TiO2-based Polyimide Nanocomposite Films

open access: yes, 2011
Polymer nanocomposites have attracted wide interest as a method of enhancing polymer properties and extending their applications. Surface potential decay has been used widely as a tool to monitor charge transport and trapping characteristics of ...
Chen, George, Zha, Junwei, Zhuang, Yuan
core  

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