Developing the right visual or metaphor to express a concept or to communicate the unseen is a powerful exercise for two reasons. First, in the process of conjuring up new and communicative visuals, you are clarifying your science in your own mind. Think about it. When putting the pieces together in your slide presentation, or your figure or cover, you are telling a visual story—one that has to be ordered and clear. For that to happen, your thinking has to be ordered and clear. You have to help us see and understand.
Benoit Mandelbrot told me how first seeing the picture of a fractal informed the mathematics. The physicist Lene Has wrote to me, “I am a firm believer in the absolute importance of using visuals in teaching and science communication—it is essential for conveying information.” My dear friend Michael Berry suggested in a lecture, “Pictures bring mathematics to life. It remains true that an equation is a more economical representation, summarizing infinitely many pictures. But economy and worth are not the same, and with the extreme compactness of equations can come a loss of immediate understanding and communication, and pictures can remedy that.”
As for the second reason, I am convinced that smart, accessible, and compelling representations of science can be doors through which others can enter. It is no longer enough to communicate only within the research community. It is critical to engage those outside of research, so that we can welcome the nonexpert to observe how science advances knowledge and how critical thinking informs important decision making, based on fact. There is no question that part of a researcher’s education should be to develop ways to entice the public to look, and then to understand.
Often, I have to come up with a depiction of an idea or a concept, rather than straight photographic documentation, generally because the concept cannot be photographed. This image, which appeared on the cover of Nature Materials, is a combination of three photographs, creating a metaphor to tell the “story” about the research. The scientists developed a technique to chemically protect an implanted device against the body’s natural mechanism of fighting any foreign material, depicted by metaphorically “deactivating” the macrophage on the left. Research: Joshua Doloff, et al. MIT.
All these vials contain the same quantum dots, or nanocrystals with dimensions in the nanometer range. (One nanometer is one-billionth of a meter!). The difference among them is that the nanocrystals vary in size. When ultraviolet light is shined on the vials of quantum dots, they fluoresce at various wavelengths, translated into various colors. Research: M. Bawendi, et al. MIT.
Many labs are studying nature’s designs, inspiring new approaches for developing material. The researchers here engineered rubbery pelts to mimic beaver fur, which could potentially be used as insulation for surfers. Research: A. Nasto, et al. MIT.
Here is another bio-inspired area of research. Various labs study superhydrophobic surfaces, where we sometimes see what is called the “lotus effect.” When a surface is hydrophobic, drops form into almost perfect balls, which then may easily be shed. Researchers are studying the possibility of various applications, like “self-cleaning” material.
For a metaphor designed to communicate the idea of a “binary” language, i.e., the way computers calculate and talk to each other, I came up with an image of the inside mechanism of a music box. As the inside barrel is turned, the pin-like projections hit a particular sounding “comb” and create a musical tone. The presence of a pin can be considered “1” and its absence is the “0”, as in the binary system—suggesting “on” and “off.”
The first chapter in my book is about using a flatbed scanner. Many are surprised to learn that a good, affordable scanner easily creates stunning images of three-dimensional objects. Here is a detail of agate. I simply placed the mineral on the scanner and set the dots-per-inch (“dpi”) setting so that the image would be recorded at a high resolution. Because the captured image is a large file size, this zoomed-in detail shows structure that the naked eye cannot see. It’s almost like using a microscope.
I used a 105 macro lens to photograph a drop of water, anticipating that the background would be out of focus.If you look carefully, you can see the in-focus image of the background within the drop—the drop is acting like a focusing lens.
I urge readers of this book to come up with some interesting ideas for backgrounds, to enhance the image, but not to distract from the important part. In this photograph, I placed the petri dish with bacterial growth on a piece of blue plastic and then placed the two on an orange background. The key is not to bring attention to the background but only to compliment the primary content. Research: Vlamakis, et al. Harvard Medical School.
Recently, I have changed my mind about encouraging my students to use their phone cameras. At first, I considered it a waste of time because the file sizes were too small and very few journal publications could use the images. That has changed as the images are becoming technically more accurate and rich. Moreover, the more photographs you create, the better a photographer you will become, as long as you study and critique your images, and start deleting those that are not worth keeping. The most compelling reason to use your phone camera is to capture those wonderful moments quickly, just when you see them. They might be gone in an instant. While sitting in the Google atrium in Cambridge, I was spellbound by the constantly changing digital ceiling. I made a movie with my phone, but a quiet still worked just as well.
Here is a single image, part of a series of images photographed over time. You are seeing a one-centimeter glass “sandwich.” Between the two glass circles is material that changes when the solution evaporates out and around the glass circles. The material changes manifest themselves with color changes. See the next image. Research: Thomas, et.al. MIT
This image was shot 24 hours after the previous image. The change is fascinating and beautiful.
Using a special technique in microscopy, one that emphasizes surface structural differences, we can clearly see the small wells in this analytical device. Research: C. Love, et. al. MIT
Finding a way to visually depict a new and simple equation to calculate the force required to push a shovel, or any other “intruder,” was a challenge. I didn’t want to use the suggested “kid-playing-with-sand-on–the-beach” shot. I first tried a number of materials and preferred the sand-like quality of these tiny beads. I used this example in the section of the book called “Case Studies,” where I show, step-by-step, the process of how I reach various final images. Research: Kamrin, et al. MIT
From Picturing Science and Engineering. Used with the permission of The MIT Press. Copyright © 2018 by Felice C. Frankel.