Honghua Yang

Title: Innovations of Inventor Honghua Yang

Introduction

Honghua Yang is a prominent inventor based in Santa Barbara, CA (US). He has made significant contributions to the field of microscopy and spectroscopy, holding a total of 6 patents. His work focuses on advancing techniques that enhance the understanding of materials at the microscopic level.

Latest Patents

One of his latest patents is titled "Method and apparatus of atomic force microscope based infrared spectroscopy with controlled probing depth." This innovative method allows for the acquisition of optical spectroscopic information about a sub-micron region of a sample while quantitatively controlling the depth and volume of the subsurface. By utilizing a scanning probe microscope, the method effectively separates top surface data from subsurface optical and chemical information. It is particularly beneficial for studying biological and chemical samples in their native aqueous environments. The technique constructs a depth-controlled spectrum by illuminating the sample with infrared radiation and measuring the probe response at resonant frequencies. The surface sensitivity is achieved by limiting heat diffusion effects, confining the signal through the non-linearity of the acoustic wave with the probe, and leveraging a high modulation frequency of the infrared radiation source exceeding 1 MHz.

Another notable patent is the "Method and apparatus for infrared scanning near-field optical microscopy based on photothermal effect." This system provides a means to measure infrared absorption in sub-micrometer regions of a sample. An infrared light source illuminates the sample while interacting with the tip of a Scanning Probe Microscope (SPM). This interaction stimulates the sample, producing measurable optical properties related to infrared absorption. The collected probe light is then used to derive infrared absorption spectrum information, potentially on a sub-micron scale.

Career Highlights

Throughout his career, Honghua Yang has worked with notable companies such as Bruker Nano GmbH and Anasys Instruments Corporation. His experience in these organizations has contributed to his expertise in the field of microscopy and spectroscopy.

Collaborations

He has collaborated with esteemed colleagues, including Craig Prater and Kevin Kjoller, further enhancing the impact of his work in the scientific community.

Conclusion

Honghua Yang's innovative contributions to microscopy and spectroscopy have significantly advanced the understanding of materials at the microscopic level. His patents reflect a commitment to enhancing scientific techniques and methodologies.