Evanohm® Foil (Light Tight)

Evanohm® Foil (Light Tight) is a high-precision resistance alloy foil composed of approximately 75% nickel, 20% chromium, 2.5% copper, and 2.5% aluminum, manufactured to eliminate pinholes and fully block light transmission. It retains the core properties of Evanohm®, including an exceptionally low temperature coefficient of resistance, long-term stability, and negligible magnetoresistance, while its light-tight design ensures protection for light-sensitive applications. Industries that benefit from this material include aerospace electronics, scientific instrumentation, and optical system manufacturing. Specific uses include serving as a shielding element in optical sensors, integration into enclosures for light-sensitive measurement devices, and application in aerospace-grade electronics requiring both electrical precision and optical isolation. In research, it enables experimental setups where light contamination could impair measurement accuracy, particularly in cryogenic physics, photonics, and calibration systems. The combination of electrical stability, magnetic insensitivity, and total light exclusion underscores its value in high-precision industrial and scientific contexts.