John Macklin

Scientists at Janelia work together in multidisciplinary teams to solve challenging biological problems that are difficult to address in other research settings.

Many lab spaces at Janelia feature modular designs and natural light.

Credit: Brad Feinknopf

Occupying 689 wooded acres along the Potomac River, Janelia Farm provides a variety of services and facilities to support its diverse community of scientists and staff—inside and outside the lab.

A view of the Janelia Farm Research Campus at dusk.

Credit: Brad Feinknopf

The Janelia Farm model frees scientists of constraints commonly found in other research environments, providing access to world-class resources and a talented support staff.

Graduate scholar John Tuthill prepares a Drosophila specimen for imaging.

Credit: James Kegley

In addition to our resident scientists and fellows, we offer visiting scientists, graduate, and undergraduate candidates a range of scientific programs.

Graduate scholar Arbora Resulaj (left) and her mentor, Janelia Emeritus Fellow Dmitry Rinberg (right).

Credit: James Kegley

Janelia Farm regularly hosts scientific meetings, ranging from workshops to intensive, specialized conferences. See what's coming up and visit the archive of past events.

Janelia's large auditorium seats 250 people.

Credit: Matt Staley

Janelia provides outstanding employment opportunities, at all levels.

Credit: James Kegley

Many tools developed in Janelia Farm labs are made freely available to outside researchers, while others are taking shape through collaborations with industry, academia, and government.

A virtual arena for the study of flight in insects.

Credit: James Kegley

Janelia’s sense of community comes from a core belief that people of diverse disciplines and backgrounds can accomplish great things when working with a common purpose.

Research specialist Trevor Wardill (left) and group leader Vivek Jayaraman (right).

Credit: James Kegley

Harris Lab - APIG

Senior Scientist

Contact Me

My research at Janelia centers on the photophysics of fluorescent molecules used for two-photon microscopy and for superresolution imaging. I also dabble in other methods for noninvasive measurements based on linear and nonlinear optical techniques, with the goal to improve the speed and information content of whole-animal imaging. In past work, I have contributed to the development of new types of lasers, extreme nonlinear optics, single-molecule research, and DNA sequencing based on phosphate-labeled nucleotides. I received my B.A. in Physics from SUNY-Binghamton and my Ph.D. in Applied Physics from Stanford University. I did postdoctoral work at AT&T Bell Laboratories. I have held research staff positions at Bell Labs and SEQ Ltd. and research management positions at Praelux Inc. and Amersham Biosciences/GE Healthcare.