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An­ge­bot 263 von 379 vom 22.03.2021, 12:24

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Freie Uni­ver­si­tät Ber­lin - Fach­be­reich Phy­sik - Insti­tut für Expe­ri­men­tal­phy­sik

We are a rese­arch group in the Phy­sics Depart­ment of Freie Uni­ver­sity spe­cia­li­zing in nanos­cale elec­tro­nics and optoelec­tro­nics. Our main focus is two-dimen­sio­nal ato­mic crystals – a class of mate­ri­als that are only atoms thick. These include: gra­phene, ato­mi­c­ally thick form of car­bon with record elec­tri­cal con­duc­tivity, ther­mal con­duc­tivity, and strength; mono­layer tran­si­tion metal dich­al­co­ge­ni­des (MoS2, WSe2, MoSe2), semi­con­duc­tors stron­gly inter­ac­ting with light; and mono­layer boron nitride (BN), an ato­mi­c­ally-smooth insu­la­tor mate­rial. Our over­ar­ching goal is to ans­wer the fol­lo­wing ques­ti­ons: How does one con­troll­ably create, pat­tern, and mani­pu­late two-dimen­sio­nal ato­mic crystals? What hap­pens to inter­ac­ting elec­trons that are con­fi­ned in two dimen­si­ons and are gover­ned by the laws of quan­tum mecha­nics? Can we use nanoelec­tro­me­cha­ni­cal devices based on gra­phene to sense ultras­mall forces and weigh ultra­light objects? Our main expe­ri­men­tal tools include nano­fa­bri­ca­tion, trans­port mea­su­rements, sta­tic and time-resol­ved optoelec­tro­nic mea­su­rements.

Research assist­ant (PhD stu­dent) (m/f/d)

with 3/4-part-time job
limi­ted to 3 years
Ent­gelt­gruppe 13 TV-L FU
Refe­rence code: PhD-DFG-2021

Work­ing field:

You will par­ti­ci­pate in the DFG-spon­so­red pro­ject "Gra­phene-based nano­me­cha­ni­cal detec­tors of tera­hertz radia­tion". The goal of the pro­ject is to deve­lop novel gra­phene-based plat­form for tera­hertz (THz) radia­tion detec­tion. We explore an inno­va­tive approach to THz bolo­me­try where a tem­pe­ra­ture change cau­sed by THz absorp­tion is detec­ted by mea­su­ring the effect it has on the mecha­ni­cal reso­nance fre­quency of sus­pen­ded gra­phene nanoelec­tro­me­cha­ni­cal (NEMS) device. The advan­ta­ges of these devices include high sen­si­ti­vity, fre­quency-tuna­bi­lity and easy mul­ti­plex­ing of detec­tor signals allo­wing for desi­gning detec­tor matri­ces. The pro­ject is based on the syn­ergy bet­ween the experts in gra­phene THz pho­to­de­tec­tion (the Moscow-based Fedo­rov group) and the experts in gra­phene nano­me­cha­nics and elec­tri­cal trans­port (the Ber­lin-based Bolo­tin group). The third-party fun­ded rese­arch pro­ject pro­vi­des an oppor­tu­nity to do a doc­to­rate.

Require­ments:

Mas­ter's degree in nat­ural sci­ences.

Desir­able:

Exper­i­ence with fab­ric­a­tion and prop­er­ties of two-dimen­sional mater­i­als, nan­ofab­ric­a­tion tech­niques (elec­tron-beam litho­graphy, micro­scop­ies, thin-film pro­cessing), optical spec­tro­scop­ies. Pro­gram­ming exper­i­ence. Exper­i­ence in Thz spec­tro­scopy, optics, or elec­tron­ics is a plus.

How to ap­ply:

Applic­a­tions should be sent by e-mail, together with sig­ni­fic­ant doc­u­ments, indic­at­ing the ref­er­ence code, in PDF format (prefer­ably as one doc­u­ment) no later than April 12th, 2021 to Mr. Prof. Dr. Kir­ill Bolotin: bolotin@zedat.fu-berlin.de.
On the given occa­sion and for the dur­a­tion of the essen­tial on-site oper­a­tions by Freie Uni­versität Ber­lin, we kindly ask you to apply elec­tron­ic­ally by e-mail. The pro­cessing of a postal applic­a­tion can­not be guar­an­teed.

Freie Uni­versität Ber­lin
Fachbereich Physik
Insti­tut für Exper­i­ment­al­physik
Mr. Prof. Dr. Kir­ill Bolotin
Arn­im­al­lee 14
14195 Ber­lin (Dah­lem)

With an elec­tronic applic­a­tion, you acknow­ledge that FU Ber­lin saves and pro­cesses your data. FU Ber­lin can­not guar­an­tee the secur­ity of your per­sonal data if you send your applic­a­tion over an unen­cryp­ted con­nec­tion.

Freie Uni­versität Ber­lin is an equal oppor­tun­ity employer.