Kristen P Constant

Title: Inventor Spotlight: Kristen P Constant

Introduction

Kristen P Constant is an accomplished inventor based in Ames, IA, known for her significant contributions to the field of photonics and thermal devices. With a total of 7 patents to her name, she has pioneered innovative solutions that enhance light extraction and thermal emission properties in various applications.

Latest Patents

Kristen's latest inventions include "Metallic layer-by-layer photonic crystals for linearly-polarized thermal emission and thermophotovoltaic device including same." This patent outlines a novel approach to metallic thermal emitters that combine two layers of uniquely structured nickel gratings atop a homogeneous nickel layer. These devices are fabricated using soft lithography and demonstrate exceptional performance in polarized thermal radiation. Her research indicates a maximum extinction ratio close to 5 across a mid-infrared range of 3.2 to 7.8 μm, alongside high emissivity reaching up to 0.65 at a wavelength of 3.7 μm. The findings correlate well with theoretical predictions, showcasing a strong electric field within the localized airspace surrounded by the gratings, enhancing the emissivity of metals selectively based on polarization.

Another significant patent is focused on the "soft lithography microlens fabrication and array for enhanced light extraction from organic light-emitting diodes (OLEDs)." This invention features microlens arrays designed to be applied to OLED substrates, enabling increased light extraction from trapped waveguided modes inside the devices. With these microlens arrays, the efficiency of light extraction extends beyond just the emitting area, achieving over 100% enhancement by utilizing a large microlens array compared to the size of the emitting area. This innovation is versatile and applicable to several types of OLEDs, regardless of emission color, configuration, or pixel size.

Career Highlights

Kristen has made significant contributions while working with prominent organizations, including the Iowa State University Research Foundation, Inc. and the United States Department of Energy. Her research continues to push the boundaries of photonic technologies and thermal management solutions.

Collaborations

Throughout her career, Kristen has collaborated with other esteemed researchers, including Kai-Ming Ho and Jae-Hwang Lee. These partnerships have led to insightful advancements in the field, promoting innovative methodologies and applications in her areas of expertise.

Conclusion

Kristen P Constant stands out as a leading innovator in the realms of photonics and thermal devices. Her patents reflect her dedication to advancing technology that improves light extraction and thermal emission. As research in these fields continues, Kristen's contributions will undoubtedly inspire future innovations and discoveries.