2 research outputs found
Microscopic Evaluation of Electrical and Thermal Conduction in Random Metal Wire Networks
Ideally,
transparent heaters exhibit uniform temperature, fast
response time, high achievable temperatures, low operating voltage,
stability across a range of temperatures, and high optical transmittance.
For metal network heaters, unlike for uniform thin-film heaters, all
of these parameters are directly or indirectly related to the network
geometry. In the past, at equilibrium, the temperature distributions
within metal networks have primarily been studied using either a physical
temperature probe or direct infrared (IR) thermography, but there
are limits to the spatial resolution of these cameras and probes,
and thus, only average regional temperatures have typically been measured.
However, knowledge of local temperatures within the network with a
very high spatial resolution is required for ensuring a safe and stable
operation. Here, we examine the thermal properties of random metal
network thin-film heaters fabricated from crack templates using high-resolution
IR microscopy. Importantly, the heaters achieve predominantly uniform
temperatures throughout the substrate despite the random crack network
structure (e.g., unequal sized polygons created by metal wires), but
the temperatures of the wires in the network are observed to be significantly
higher than the substrate because of the significant thermal contact
resistance at the interface between the metal and the substrate. Last,
the electrical breakdown mechanisms within the network are examined
through transient IR imaging. In addition to experimental measurements
of temperatures, an analytical model of the thermal properties of
the network is developed in terms of geometrical parameters and material
properties, providing insights into key design rules for such transparent
heaters. Beyond this work, the methods and the understanding developed
here extend to other network-based heaters and conducting films, including
those that are not transparent
Book of Abstracts of the 2nd International Conference on Applied Mathematics and Computational Sciences (ICAMCS-2022)
It is a great privilege for us to present the abstract book of ICAMCS-2022 to the authors and the delegates of the event. We hope that you will find it useful, valuable, aspiring, and inspiring. This book is a record of abstracts of the keynote talks, invited talks, and papers presented by the participants, which indicates the progress and state of development in research at the time of writing the research article. It is an invaluable asset to all researchers. The book provides a permanent record of this asset.
Conference Title: 2nd International Conference on Applied Mathematics and Computational SciencesConference Acronym: ICAMCS-2022Conference Date: 12-14 October 2022Conference Organizers:Â DIT University, Dehradun, IndiaConference Mode: Online (Virtual