Abhishek Yadav

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Temperature-Dependent Thermal and Thermoelectric Properties of Single-Walled Carbon Nanotube Aerogels

ASME 2012 Third International Conference on Micro/Nanoscale Heat and Mass Transfer, 2012

Aerogels are ultraporous solids that have found a number of uses due to their very low density. R... more Aerogels are ultraporous solids that have found a number of uses due to their very low density. Recently, aerogels based on single-walled carbon nanotubes (SWCNTs) have been fabricated and show significant potential for battery, supercapacitor, sensor, and thermal applications due to the electrical, mechanical, and thermal properties of SWCNTs as well as their capacity for functionalization. In this work we report temperature-dependent (100–300 K) measurements of thermal conductivity, electrical conductivity, and Seebeck coefficient for SWCNT aerogels synthesized through a critical point drying technique. Two types of aerogels are considered: an as-grown SWCNT aerogel and one that is coated with multiple graphitic layers (Gr-SWCNT) leading to significantly improved mechanical properties. Thermal conductivity and electrical conductivity were found to be significantly higher for SWCNT aerogels than for other aerogels, even though they have a much smaller density. Gr-SWCNT aerogels wer...

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Effects of substrate topography on current injection and light emission properties of organic light emitting devices

Organic Electronics, 2014

Substrate topography plays a critical role in the function of nano-scale materials and devices. W... more Substrate topography plays a critical role in the function of nano-scale materials and devices. We study small molecular organic light emitting devices (OLEDs) deposited onto non-planar substrates, where the substrate's radius of curvature in some regions approaches the thickness of the active device layers. As a result, the electric field profile inside the organic charge transport layers is modified, influencing carrier injection, transport, and light emission properties. Experiments and numerical modeling suggest that charge balance and electroluminescence efficiency potentially can be improved in electron injection-limited OLED architectures via substrate geometry. These findings elucidate the optoelectronic behavior (and degradation) of OLEDs on imperfect substrates, and suggest a strategy based on substrate topography for controlling device behavior.

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Genitofemoral neuralgia: A review

Clinical Anatomy, 2014

Genitofemoral neuralgia is a cause of neuropathic pain that is often debilitating in nature. It i... more Genitofemoral neuralgia is a cause of neuropathic pain that is often debilitating in nature. It is characterized by chronic neuropathic groin pain that is localized along the distribution of the genitofemoral nerve. The symptoms include groin pain, paresthesias, and burning sensation spreading from the lower abdomen to the medial aspect of the thigh. It may present with scrotal pain in male, while females experience symptoms radiating to the labia majora and mons pubis. Genitofemoral neuropathy has been attributed to iatrogenic nerve injury occurring during inguinal and femoral herniorrhaphy, with cases developing after both open and laparoscopic techniques. Diagnosis of genitofemoral neuralgia can be challenging, due to the overlap in sensory distribution the nerve shares with the ilioinguinal and iliohypogastric nerve. Differential nerve blocks are recommended in effort to differentiate the nerves when patients present with lower abdominal and groin pain. Once a diagnosis has been made, there exist several treatment options for genitofemoral neuralgia ranging from medical management, non-invasive injections, and surgery. Literature has also brought light to radiofrequency ablation and cryoablation performed under ultrasound guidance as emerging treatments. The aim of the current article is to review the anatomy, diagnostic techniques, and treatment options for patients with genitofemoral neuralgia.

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Anatomy in ancient India: a focus on the Susruta Samhita

Journal of Anatomy, 2010

This review focuses on how the study of anatomy in India has evolved through the centuries. Anato... more This review focuses on how the study of anatomy in India has evolved through the centuries. Anatomical knowledge in ancient India was derived principally from animal sacrifice, chance observations of improperly buried human bodies, and examinations of patients made by doctors during treatment. The Vedic philosophies form the basis of the Ayurvedic tradition, which is considered to be one of the oldest known systems of medicine. Two sets of texts form the foundation of Ayurvedic medicine, the Susruta Samhita and the Charaka Samhita. The Susruta Samhita provided important surgical and anatomical information of the understanding of anatomy by Indians in the 6th century BCE. Here we review the anatomical knowledge known to this society.

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Thermal and Electrical Transport in Ultralow Density Single-Walled Carbon Nanotube Networks

Advanced Materials, 2013

Supporting Information for adma.201300059 Blackbody radiation losses Blackbody radiation losses f... more Supporting Information for adma.201300059 Blackbody radiation losses Blackbody radiation losses from the sample can be expressed by Q radiation_env = A side σ b ε(T 4-T a 4),

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