In the realm of quadrupedal locomotion, there's a growing interest in understanding the concept of passive leg stiffness. This stiffness, when tuned correctly, can significantly influence a robot's locomotion dynamics and performance. However, integrating passive stiffness into quadruped robots has been challenging due to complexities in design,...

The architecture information of a Deep Neural Network (DNN) model is considered a valuable, sensitive piece of property for a company. Knowledge of a DNN’s exact architecture allows any adversary to build a substitute model and use this substitute model to launch devastating adversarial attacks. Side-channel based DNN architecture stealing can...

Background Fracture toughness tests measure the ability of a material to resist propagation of a pre-existing flaw. This is an important material property in the manufacturing industry, since the avoidance of all flaws is not possible. Mixed Mode Bending (MMB) is a previously developed fixture that investigates the fracture toughness of layered materials...

­Recently, Deep Neural Networks (DNNs) have been deployed in many safety-critical applications. The security of DNN models can be compromised by adversarial input examples, where the adversary maliciously crafts and adds input noise to fool a DNN model. The perturbation of model parameters (e.g., weight) is another security concern, one that relates...

Background Bismuth-containing III-V semiconductor alloys have received considerable attention as materials for optoelectronic devices operating in the mid- and long-wave infrared spectrum. The infrared spectrum finds important applications in both commerce and government, including medical imaging and diagnostics, autonomous vehicle sensors, telecommunications,...

High speed mid-infrared (MIR) photodetectors are crucial in numerous applications, ranging from hyper-spectral imaging and biomedical sensing to environmental monitoring and astronomy. However, fundamental limitations in current technologies restrict the scope of use for these photodetectors. Current technologies suffer from weaknesses such as reduced...