Adsorption material-based humidity sensor

An apparatus comprising:

• a linear beam of paper material having a length greater than a width, and having a first side and a second side along said length of said linear beam, said first side being opposite said second side;
• a coating covering said first side along said length of said linear beam;
• and
• an adhesive surface adjacent said linear beam,
• said linear beam developing a curvature from exposure to an excessive moisture level above a previously established moisture level,
• said curvature causing said first side of said linear beam to contact said adhesive surface, and
• said linear beam remaining attached to said adhesive surface after contacting said adhesive surface.

An apparatus comprising:

• a linear beam of paper material having a length greater than a width, and having a first side and a second side along said length of said linear beam, said first side being opposite said second side;
• a coating covering said first side along said length of said linear beam;
• and
• an adhesive surface comprising a contact adhesive adjacent said linear beam,
• said linear beam developing a curvature toward said adhesive surface from exposure to atmospheric moisture above a previously established moisture level,
• said curvature causing said first side of said linear beam to contact said adhesive surface, and
• said linear beam permanently remaining attached to said adhesive surface after contacting said adhesive surface.

An apparatus comprising:

• a base;
• a linear beam of paper material connected to said base, said linear beam having a length greater than a width, and having a first side and a second side along said length of said linear beam, said first side being opposite said second side;
• a coating covering only said first side along said length of said linear beam and not covering said second side;
• and
• an adhesive surface connected to said base adjacent said linear beam, said adhesive surface comprising a contact self-adhesive,
• said linear beam developing a curvature toward said adhesive surface from exposure to an excessive humidity level above a previously established humidity level,
• a sufficient amount of said curvature causing said first side of said linear beam to contact said adhesive surface, and
• said linear beam remaining permanently attached to said adhesive surface after contacting said adhesive surface.