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This communication describes a low-cost heater designed and fabricated from materials like paper/ cellulose acetate sheet and a pencil. A high graphite content pencil was used to coat the surface of paper/ cellulose by applying sufficient strokes on the surface. Electrical contacts were made by placing either a wire or copper/aluminium foils over the coated surface. Temperature profile study of the heater indicated that a maximum of 100°C can be achieved without the paper catching fire. The heater was also designed in flexible structure and tested for biomedical purpose. The heater can be operated using a battery, making it easily portable. This makes it useful in school, college and research laboratory experiments with minimum expenses as well as in many medical applications as described.

Keywords

Pencil Trace, Cellulose Compounds, Heat Source, Graphite Composite.
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