Observable Features and Final State Records of Material Behavior

In material behavior records, while dynamic processes in open spaces matter, the final colored visible state left on the substrate (referred to below as the "final result") serves as another core dimension of archiving.

This record is strictly limited to colored materials after active behavior ends, focusing on static attributes on the substrate such as visible marks, surface texture, thickness, sheen, and transparency. Colorless transparent liquids like water or clear alcohol are excluded.

The core objective is to distinguish between two concepts: "the material has presented a visible color result" versus "whether the physical and visual behavior of the material itself has completely stopped."

1. Specific Characteristics of Final Results Across Material Systems

1. Alcohol Ink

Alcohol ink forms a relatively definite, fixed trace.

• Surface Texture & Sheen: The overall surface exhibits a slight plastic-like quality. Local sheen correlates directly with trace thickness; thicker areas show a relatively clear sheen with potential reflections.
• Thickness & Transparency: Thicker areas present deeper color and higher opacity, visually approaching an opaque solid; thinner areas retain clear transparent or semi-transparent qualities.
• Behavior Continuation: The result is permanent and irreversible. Without human intervention (such as using solvents to re-activate or remove it), the material itself produces no spontaneous structural changes. Any subsequent fading or flaking is an outcome of environmental contact, not a self-directed material behavior.

2. Dry Pigment Powder & Handcrafted Watercolor Paint

• Dry Pigment Powder (Pure Powder State):
  Dry powder placed directly on substrates like paper undergoes no state transition. A portion of powder particles remains attached through physical contact with the paper surface, keeping its original granule shape and color. Long-term observation reveals no spontaneous shift in texture or color.
• Handcrafted Watercolor Paint (Powder & Binder Combination):
  When pigment powder combines with binder materials to form solid blocks, final surface states vary:
  • Surface Structure: Depending on pigment characteristics, surfaces can show bubbles, cracks, matte finishes, semi-matte finishes, or a slight sheen.
  • Optical Performance: Specific pigments display sparkle effects under light, or present color shifts depending on the viewing angle.

3. Solid Watercolor Painting

Once solid watercolor is applied in painting and dries, its final result shows specific visual depth:

• Transparency & Thickness: Layer thickness and intrinsic pigment traits jointly define final transparency. Thin coats show a transparent quality; as layers thicken, appearance shifts to semi-transparent or opaque. Darker pigments naturally possess lower inherent transparency.
• Surface Sheen: Where paint collects heavily in localized spots, a bright sheen can emerge.
• Special Optical States: Depending on the pigment, specific areas may exhibit sparkle, luminescence, night glow (glowing after absorbing light), or angle-dependent color shifts.

4. Acrylic Paint

Acrylic paint dries into a solid coating with perceptible thickness, exhibiting a distinct film-like character:

• Surface Texture & Sheen: After drying, it displays a plastic-like texture. Whether the surface turns glossy or matte depends on the specific system and added mediums.
• Thickness & Form Changes: Coatings possess physical thickness. During drying, thicker areas may form localized surface depressions due to shrinkage.
• Localized Defect Characteristics: On specific substrates (such as certain water-based primers) or at specific layer thicknesses, coatings may develop cracks, localized popping, or flaking. These are conditional occurrences tied to specific material-substrate pairings rather than universal traits.

5. Oil Pastels

Oil pastels leave behind a highly opaque, solid color layer:

• Coverage & Transparency: Overall coverage is strong with low transparency. Faint semi-transparency may appear in thin areas.
• Sheen & Cracking: Oil pastels are not inherently high-gloss materials; thicker areas display a slight sheen, while thin areas remain essentially matte. No ongoing surface cracking has been observed in long-term records.
• Tackiness & Re-activation State: Unlike materials that form locked surfaces, oil pastel surfaces maintain a slight tackiness after drying, retaining the possibility of being re-worked, adjusted, or re-activated.

2. Cross-Material Comparison of Final Results

3. Conclusion: Defining Final Results versus Behavior Termination

Based on the above observations, differences among colored materials span color, thickness, sheen, transparency, and special optical features (such as sparkle or color shifts). Beyond these, the core distinction lies in whether a fixed, closed surface has been established.

• Definite Terminal Materials: For alcohol ink, acrylic paint, and dried watercolor paintings, presenting visible results coincides with the end of spontaneous material behavior. Once a solid surface forms, the material itself generates no further image structures. External environmental impacts (such as color shifts or flaking) represent external forces rather than spontaneous material behavior.
• Conditional Terminal Materials (Oil Pastels): Presenting a visible color result does not mean oil pastel behavior has permanently ended. Without a sealing layer, its surface retains tackiness and remains open to re-activation by external forces.

In material archives, establishing a "final static state" for oil pastels depends on artificially applying a protective barrier film. This barrier alters contact conditions with the surrounding environment, establishing a definitive endpoint for preservation. Without a protective layer, the material remains in a state capable of being re-worked indefinitely.