School of Medicine
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Clinical Associate Professor, Emergency Medicine
BioDr. D'Souza's clinical practice is in Emergency Medicine at Stanford Hospital. He has a strong interest in Emergency Medical Services and pre-hospital care. He currently serves as medical advisor for the Palo Alto Fire Department, Mountain View Fire Department, and Santa Clara Fire Department. He serves as the Department Liaison to the Trauma Service. He previously served as Medical Director for Stanford Life Flight and course director for the Stanford EMT Training Program. His research interests include treatment of neurological emergencies and variability in trauma care.
Professor of Pediatrics (Hematology/Oncology) at the Lucile Salter Packard Children's Hospital
Current Research and Scholarly InterestsHematology/Oncology, Phase I drug studies for childhood cancer, overcoming multidrug resistance in leukemia and solid tumors, biology and treatment of acute nonlymphocytic leukemia, early detection of central nervous system leukemia by measuring growth, factor binding proteins.
Associate Professor of Radiology (Pediatric Radiology)
Current Research and Scholarly InterestsUltrasonic beamforming, imaging methods, systems, and devices.
Clinical Assistant Professor, Psychiatry and Behavioral Sciences
BioDr. Kate Dahl specializes in working with children and families who are affected by medical illness. She has practiced at Stanford since 2014 and is the primary pediatric psychologist for the dialysis, kidney transplant, and liver transplant medical teams. Her work often focuses on adjustment to new diagnosis, coping with illness and treatment, and adherence to the medical regimen. She is particularly interested in the experience of adolescents with chronic medical conditions and leads groups for teens who have received kidney and liver transplants.
The J.G. Jackson and C.J. Wood Professor in Chemistry
BioProfessor Dai’s research spans chemistry, physics, and materials and biomedical sciences, leading to materials with properties useful in electronics, energy storage and biomedicine. Recent developments include near-infrared-II fluorescence imaging, ultra-sensitive diagnostic assays, a fast-charging aluminum battery and inexpensive electrocatalysts that split water into oxygen and hydrogen fuels.
Born in 1966 in Shaoyang, China, Hongjie Dai began his formal studies in physics at Tsinghua U. (B.S. 1989) and applied sciences at Columbia U. (M.S. 1991). He obtained his Ph.D. from Harvard U and performed postdoctoral research with Dr. Richard Smalley. He joined the Stanford faculty in 1997, and in 2007 was named Jackson–Wood Professor of Chemistry. Among many awards, he has been recognized with the ACS Pure Chemistry Award, APS McGroddy Prize for New Materials, Julius Springer Prize for Applied Physics and Materials Research Society Mid-Career Award. He has been elected to the American Academy of Arts and Sciences, National Academy of Sciences (NAS), National Academy of Medicine (NAM) and Foreign Member of Chinese Academy of Sciences.
The Dai Laboratory has advanced the synthesis and basic understanding of carbon nanomaterials and applications in nanoelectronics, nanomedicine, energy storage and electrocatalysis.
The Dai Lab pioneered some of the now-widespread uses of chemical vapor deposition for carbon nanotube (CNT) growth, including vertically aligned nanotubes and patterned growth of single-walled CNTs on wafer substrates, facilitating fundamental studies of their intrinsic properties. The group developed the synthesis of graphene nanoribbons, and of nanocrystals and nanoparticles on CNTs and graphene with controlled degrees of oxidation, producing a class of strongly coupled hybrid materials with advanced properties for electrochemistry, electrocatalysis and photocatalysis. The lab’s synthesis of a novel plasmonic gold film has enhanced near-infrared fluorescence up to 100-fold, enabling ultra-sensitive assays of disease biomarkers.
Nanoscale Physics and Electronics
High quality nanotubes from his group’s synthesis are widely used to investigate the electrical, mechanical, optical, electro-mechanical and thermal properties of quasi-one-dimensional systems. Lab members have studied ballistic electron transport in nanotubes and demonstrated nanotube-based nanosensors, Pd ohmic contacts and ballistic field effect transistors with integrated high-kappa dielectrics.
Nanomedicine and NIR-II Imaging
Advancing biological research with CNTs and nano-graphene, group members have developed π–π stacking non-covalent functionalization chemistry, molecular cellular delivery (drugs, proteins and siRNA), in vivo anti-cancer drug delivery and in vivo photothermal ablation of cancer. Using nanotubes as novel contrast agents, lab collaborations have developed in vitro and in vivo Raman, photoacoustic and fluorescence imaging. Lab members have exploited the physics of reduced light scattering in the near-infrared-II (1000-1700nm) window and pioneered NIR-II fluorescence imaging to increase tissue penetration depth in vivo. Video-rate NIR-II imaging can measure blood flow in single vessels in real time. The lab has developed novel NIR-II fluorescence agents, including CNTs, quantum dots, conjugated polymers and small organic dyes with promise for clinical translation.
Electrocatalysis and Batteries
The Dai group’s nanocarbon–inorganic particle hybrid materials have opened new directions in energy research. Advances include electrocatalysts for oxygen reduction and water splitting catalysts including NiFe layered-double-hydroxide for oxygen evolution. Recently, the group also demonstrated an aluminum ion battery with graphite cathodes and ionic liquid electrolytes, a substantial breakthrough in battery science.
Sudeb C. Dalai
Adjunct Clinical Assistant Professor, Medicine - Infectious Diseases
BioDr. Sudeb Dalai, MD PhD is an Infectious Disease Physician at Stanford University School of Medicine and Palo Alto Medical Foundation. Currently a Clinical Assistant Professor (Teaching) at Stanford, he has taught courses and conducted research in the Division of Infectious Diseases for over 17 years.
Dr. Dalai completed his undergraduate degree at MIT, MD and MS at Stanford, PhD in Epidemiology at UC Berkeley School of Public Health, Internal Medicine Residency at UCSD, and Fellowship in Infectious Diseases at Stanford. He has received numerous teaching and leadership awards and research grants and has co-authored multiple peer-reviewed publications. His work has been supported by the Infectious Diseases Society of America, the Howard Hughes Medical Institute, the Paul and Daisy Soros Foundation, and the National Institutes of Health. Dr. Dalai is an internationally-invited speaker and has been featured in multiple media outlets including ABC, NBC, Good Morning America, US News & World Report, Buzzfeed, and The Huffington Post. In 2003 he was elected to the MIT Board of Trustees.
Professor of Radiology (General Radiology) and, by courtesy, of Pediatrics (Hematology/Oncology)
Current Research and Scholarly InterestsAs a physician-scientist involved in the care of pediatric patients and developing novel pediatric molecular imaging technologies, my goal is to link the fields of nanotechnology and medical imaging towards more efficient diagnoses and image-guided therapies. Our research team develops novel imaging techniques for improved cancer diagnosis, for image-guided-drug delivery and for in vivo monitoring of cell therapies in children and young adults.
Ronald L. Dalman MD
Walter Clifford Chidester and Elsa Rooney Chidester Professor of Surgery
Current Research and Scholarly InterestsVascular biology, arterial remodeling, aneurysm development; innovative treatment strategies for AAA, animal models of arterial disease, arterial remodeling and flow changes in spinal cord injury, genetic regulation of arterial aneurysm formation