Results 131 to 140 of about 24,379 (307)

Terahertz metamaterials on free-standing highly-flexible polyimide substrates

open access: yes, 2008
We have fabricated resonant terahertz metamaterials on free standing polyimide substrates. The low-loss polyimide substrates can be as thin as 5.5 micron yielding robust large-area metamaterials which are easily wrapped into cylinders with a radius of a ...
A C Strikwerda   +8 more
core   +1 more source

Counterion‐Controlled Photocatalytic Doping of Organic Semiconductors

open access: yesAdvanced Materials, EarlyView.
Counterion size is shown to actively control photocatalytic doping in organic semiconductors. Small anions suppress aggregation of acridinium photocatalysts, enhance electron transfer, and dramatically increase doping efficiency. This simple strategy enables conductivities up to 2000 S cm−1 in benchmark polymers, revealing counterions as a powerful yet
Tiefeng Liu   +16 more
wiley   +1 more source

Advances in MoS2‐Au Nanostructured Platforms for Cancer‐Derived miRNA Detection

open access: yesAdvanced Materials Interfaces, EarlyView.
This figure presents the roadmap and scope of this review on microRNA detection technologies, with emphasis on MoS2 and MoS2–Au hybrid nanostructures. It traces the evolution from conventional assays to MoS2‐based SERS platforms, highlights synthesis, interfacial chemistry, and signal‐enhancement mechanisms, and summarizes key challenges and future ...
Faith Mokobi Zablon   +2 more
wiley   +1 more source

Hybrid Magnetoactive Soft Elastomers: Material Development Toward Application in Diaphragm Pumps

open access: yesAdvanced Materials Technologies, EarlyView.
Hybrid magnetoactive soft elastomeric membranes are developed by combining two different types of magnetic particles. The membranes exhibit distinct mechanical, magnetic and thermal properties owing to the unique characteristics of the two magnetic particles.
Somashree Mondal   +4 more
wiley   +1 more source

Towards microwave volumetric additive manufacturing: Generation of a computational multi-physics model for localized curing

open access: yesAdditive Manufacturing Letters
Visible light-based volumetric additive manufacturing (VAM) technology has recently enabled rapid 3D printing of optically transparent resins in a single step.
Saptarshi Mukherjee   +6 more
doaj   +1 more source

Exploring the Potential of Microwave Annealing for Enhancing Si‐based GeSn Lasers

open access: yesAdvanced Materials Technologies, EarlyView.
We explore low‐thermal‐budget microwave annealing to enhance the performance of group‐IV GeSn lasers on Si. Microwave annealing under optimal conditions can simultaneously relax unwanted compressive strain and enhance the material quality of the GeSn active layer, thereby reducing the threshold and increasing the laser operating temperature.
Yue‐Tong Jheng   +8 more
wiley   +1 more source

Influence of the processing technique on the flexural fatigue strength of denture base resins: An in vitro investigation

open access: yesIndian Journal of Dental Research, 2010
Background : Though acrylic resins possess many desirable properties, denture fracture due to flexural fatigue or impact failure is a common problem.
Banerjee Rajlakshmi   +3 more
doaj  

Development of fire-resistant, low smoke generating, thermally stable end items for aircraft and spacecraft [PDF]

open access: yes
Materials were developed to improve aircraft interior materials by modifying existing polymer structures, refining the process parameters, and by the use of mechanical configurations designed to overcome specific deficiencies. The optimization, selection,
Gagliani, J.   +2 more
core   +1 more source

Index to NASA Tech Briefs, 1975 [PDF]

open access: yes, 1976
This index contains abstracts and four indexes--subject, personal author, originating Center, and Tech Brief number--for 1975 Tech ...

core   +1 more source

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