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LATTE Receives Second Prize for 2D Materials Research at the AAAS PAcific Division Conference

Poster by member of LATTE

Mahesh R. Neu­pane pre­sented his research work titled “Effect of Mis­ori­en­ta­tion on the Elec­tronic Prop­er­ties of vdW Mate­ri­als” at the 95th AAAS Pacific Divi­sion Con­fer­ence held on June 16–20, 2014 in the Uni­ver­sity of Cal­i­for­nia, River­side, CA. His research pre­sen­ta­tion in the 2D Mate­ri­als sec­tion was awarded sec­ond prize which includes a cash prize, an award cer­tifi­cate, and a life­time mem­ber­ship of Sigma Xi Soci­ety (a research honor soci­ety). Co-authors were Dar­shana Wick­ra­ma­ratne, Supeng Ge, Gen Yin and Shan­shan Su, all of whom are PhD stu­dents in Prof. R. Lake’s research group. The pre­sen­ta­tion described results from an atom­istic study of the elec­tronic and vibra­tional prop­er­ties of mis­ori­ented, het­erostruc­ture 2D mate­ri­als such as graphene on graphene and graphene on h-BN.

Multi-state current switching by voltage controlled coupling of crossed graphene nanoribbons


The inter­layer trans­port between two semi-infinite crossed graphene nanorib­bons (GNRs) is gov­erned by the quan­tum inter­fer­ence between the stand­ing waves of the indi­vid­ual GNRs. An exter­nal bias applied between the GNRs con­trols the wave­length and hence the rel­a­tive phase of these stand­ing waves. Sweep­ing the applied bias results in mul­ti­ple con­struc­tive and destruc­tive inter­fer­ence con­di­tions. The oscil­la­tory nature of the volt­age con­trolled inter­fer­ence gives rise to an oscil­la­tory current-voltage response with mul­ti­ple neg­a­tive dif­fer­en­tial resis­tance regions. The period of oscil­la­tion is inversely pro­por­tional to the length of the finite ends of the GNRs. Quan­tum inter­fer­ence is explic­itly shown to be the phys­i­cal mech­a­nism con­trol­ling the inter­layer cur­rent by direct eval­u­a­tion of the inter­layer matrix ele­ment using ana­lyt­i­cal expres­sions for the wavefunctions.


LATTE Receives Best Research Presentation Award at the FENA Review


Masum at FENA Review 2012

Masum at FENA Review 2012

Elec­tri­cal engi­neer­ing PhD can­di­date K. M. Masum Habib received the best research pre­sen­ta­tion award at the com­pe­ti­tion spon­sored by the Defense Advanced Research Projects Agency (DARPA) and Semi­con­duc­tor Research Cor­po­ra­tion (SRC). The event took place Feb. 7 at the Func­tional Engi­neered Nano Archi­tec­ton­ics (FENA) annual review in Los Ange­les. The com­pe­ti­tion fea­tured more than 50 research pre­sen­ta­tions from the top US engi­neer­ing schools such as MIT, UCB, UCLA, UCSB, Stan­ford, Colum­bia Uni­ver­sity, Cal­tech, USC and NCSU. Only one poster was selected from each of the six FENA research themes. Masum Habib won in the Processes and Devices theme. The win­ning pre­sen­ta­tions were selected by rep­re­sen­ta­tives from Intel, Texas Instru­ments, IBM, Raytheon, other indus­try lead­ers and gov­ern­ment orga­ni­za­tions. The award included a Cer­tifi­cate of Achieve­ment and a cash prize. Mr. Habib con­ducts his dis­ser­ta­tion research in Prof. Roger Lake’s Lab­o­ra­tory for Ter­a­hertz and Teras­cale Elec­tron­ics (LATTE).


Wel­come to the home­page for the LAb­o­ra­tory for Teras­cale and Ter­a­hertz Elec­tron­ics (LATTE)!

Our mis­sion is to under­stand, invent, design, and eval­u­ate future elec­tronic mate­ri­als, devices, and cir­cuits. Our approach is to develop the the­ory, mod­els, and sim­u­la­tion tools and then apply them to model, design, and ana­lyze the elec­tronic prop­er­ties of novel mate­ri­als and the oper­a­tional prin­ci­ples and per­for­mance met­rics of prospec­tive devices and circuits.

Our lab is located at Win­ston Chung Hall, WCH-235.